MOPAR PERFORMANCE HEADS & INTAKES

Jims Auto Parts Home Page

Cylinder Heads	Intake Manifolds	Valves & Valve Hardware
Cylinder Head Gaskets	Intake Manifold Gaskets & Components	Valve Covers, Components & Gaskets
Cylinder Head Hardware	Rocker Shafts, Supports & Hardware	Rocker Arms & Hardware

CYLINDER HEAD GASKETS & HARDWARE

CAST IRON HEAD STEEL SHIM GASKETS
These Cylinder Head Shim Gaskets are sold in pairs.

P2468010	Hemi Cast Iron Cylinder Head Steel Shim Gaskets — 0.020" Compression Thickness	$ 74.95
P4286754	Big Block Steel Shim Cylinder Head Gasket Set — 0.020" Compression Thickness	$ 39.95

COMPOSITION MATERIAL CYLINDER HEAD GASKETS
Gaskets can be used for replacement or competition applications up to 12.5:1 compression ratio. They have thickness of 0.040" to 0.042" and are sold in pairs.

P4529456	Hemi Composition Material Cylinder Head Gaskets — 4.250"-4.310" Bore Range	$ 199.95
P4876071	Hemi Composition Material Cylinder Head Gaskets — 4.380"-4.500" Bore Range	$ 199.95
P4349559	Big Block Composition Material Cylinder Head Gasket — Up to 4.380" Bore	$ 99.95
P4120094	Small Block Composition Material Cylinder Head Gasket — to 4.060" Bore; 0.024"-0.028" Thickness	$ 89.95
P4349557	Small Block Composition Material Cylinder Head Gasket — Up to 4.060" Bore, High Comp	$ 99.95

MAGNUM CYLINDER HEAD CONVERSION COMPONENTS
Designed to allow the use of Magnum engine heads on Small Block engines. Requires the use of Magnum cylinder heads, hydraulic pushrods, Jeep® tappets and 8 Magnum engine rocker arms to oil rocker arms through tappet and pushrod.

P4529220AB	Hydraulic Tappet — Sold Individually (Small Block, 2.5L/4.0L Jeep® Engines)	$ 164.95
P4876050	Rocker Arm Set — Single Cylinder (5.9L Magnum Engines, Magnum Crate Engines, not 4.7L) [enough for one cylinder; does not include tapper or pushrod]	$ 14.95

LOW COMPRESSION RATIO COMPOSITION MATERIAL HEAD GASKET
The Low Compression Ratio Composition Material Head Gasket is not recommended for compression ratios over 10.5:1.

P4120093

Composition Material Cylinder Head Gasket — Up to 4.060" Bore

$ 39.95

CYLINDER HEAD HARDWARE KIT
Cylinder Head Hardware Kit contains 4 head freeze plugs and 10 dowel pins for the rocker shaft stands.

P5249570

Hemi Cylinder Head Hardware Kit

$ 39.95

CYLINDER HEAD BOLT SET
Cylinder Head Bolt Set includes head bolts and washers for one cylinder head.

P4120471	Small Block Cylinder Head Bolt Set	$ 189.95
P4876759	Aluminum Commando Cylinder Head Bolt Set (Small Block, 5.2L/5.9L Truck Magnum/Jeep® Engines)	$ 189.95

HARDENED WASHER SET
Hardened Washer Set for use with Head Bolts and Main Caps. They are sold in sets of 20.

P4120456

Hardened Washer Set — 3/8" (426 Hemi®, Big Block, Small Block, Magnum/Jeep® Engines)

$ 29.95

HEAD STUD KITS
Kits contain studs, nuts and washers for changeover of stock head bolts.

	Cylinder Head Stud Kit ("R" Blocks with W9 Heads)	$ 299.95
P4876757AB	Cylinder Head Stud Kit (Aluminum Block, W9 Heads)	$ 359.95
P5007912	Cylinder Head Stud Kit (W9 Raised Port Cylinder Head)	$ 1,299.95

INTAKE MANIFOLDS & HARDWARE

HEMI DUAL QUAD INTAKE —
8-BBL
This aluminum Dual Quad Intake Manifold is built from original tooling! Machined for aftermarket AFB or Holley Carburetors, it will fit production heads and has provisions for manifold heat and power brakes. It retains the stock height as production.

P4510633

Aluminum Dual Quad Intake — Dual 4-bbl Carbs (426 Hemi®)

$ 799.95

*will not accept original equipment AFB carburetors.

BIG BLOCK CROSS RAM INTAKE — DUAL 4-BBL MAX WEDGE
Improves air flow by as much as 20% and is fully interchangeable on all Max Wedge applications. It is based on the 1964 Max Wedge intake and uses production AFB carburetors. Designed for use with RB application with Max Wedge heads.

P5007330

Aluminum Cross Ram Intake — Dual 4-bbl Carbs (Max Wedge and "RB" Engines)

$ 1,999.95

BIG BLOCK RACE ALUMINUM SINGLE PLANE INTAKES —
4-BBL

P4876128	Race Aluminum Single Plane Intake — 4-bbl Carb (Max Wedge w/Prod. or Stage VI Heads, "RB")	$ 329.95
P4876129	Race Aluminum Single Plane Intake — 4500 Carb (Max Wedge w/Prod. or Stage VI Heads, "RB")	$ 499.95

BIG BLOCK ALUMINUM DUAL PLANE INTAKES — 4-BBL
Intake manifolds for use with standard heads bolt-on and accept standard flange Holley carburetors. Similar to production, but have larger cross-sectional area runners for increased power. Heat crossovers make them ideal for dual purpose applications.

P5153525

Aluminum Dual Plane Intake -- 4-bbl Carb (Production 413/426W/440 w/Stage IV/V/Production Heads)

$ 399.95

BIG BLOCK ALUMINUM DUAL PLANE INTAKES — SIX PACK

P4529055	Aluminum Dual Plane Intake — Six Pack (Production 361/383/400 w/Stage IV/ V/Production Heads)	$ 569.95
P4529056	Aluminum Dual Plane Intake — Six Pack (Production 413/426W/440 w/Stage IV/V/Production Heads)	$ 569.95

SMALL BLOCK ALUMINUM DUAL PLANE INTAKES — 4-BBL

P4876335AB	Aluminum Dual Plane Intake — 4-bbl Carb (1967-91 Standard Heads)	$ 349.95
P5007381AB	Aluminum Dual Plane Intake — 4-bbl Carb (5.2L/5.9L Truck Magnum/Jeep® Engines)	$ 429.95
P5249572AB	Aluminum Dual Plane Intake — 4-bbl Carb (W2 Heads)	$ 559.95

SMALL BLOCK ALUMINUM SINGLE PLANE INTAKE —
4-BBL

P4876829AB

Aluminum Single Plane Intake — 4-bbl Carb (W2 Heads)

$ 869.95

INTAKE MANIFOLD GASKET SETS
Custom-fit Intake Gasket Sets come complete to service 1 engine (includes gaskets, end seals, o-rings, and distributor seal where applicable).

P4120086	Intake Manifold Gasket Set — 0.060" Thick (426 Hemi® Except D4-D6)	$ 59.95
P4529534	Intake Manifold Gasket Set — 0.090" Thick (426 Hemi® Except D4-D6)	$ 33.95
P5249433	Intake Manifold Gasket Set — 0.030" Thick (Big Block with Stage VI Heads)	$ 35.95
P5249467	Intake Manifold Gasket Set — 0.045" Thick (Big Block with Stage VI Heads)	$ 35.95
P5249468	Intake Manifold Gasket Set — 0.060" Thick (Big Block with Stage VI Heads)	$ 35.95
P5249483	Intake Manifold Gasket Set — 0.030" Thick (Max Wedge with Stage VI Heads)	$ 31.95
P5249484	Intake Manifold Gasket Set — 0.045" Thick (Max Wedge with Stage VI Heads)	$ 35.95
P5249485	Intake Manifold Gasket Set — 0.060" Thick (Max Wedge with Stage VI Heads)	$ 35.95
P4007570	Intake Manifold Gasket Set — 0.120" Thick (Small Block W2 Heads)	$ 37.95
P4007571	Intake Manifold Gasket Set — 0.060" Thick (Small Block W2 Heads)	$ 37.95
P4120210	Intake Manifold Gasket Set — 0.030" Thick (Small Block W2 Heads)	$ 30.95
P4120211	Intake Manifold Gasket Set — 0.045" Thick (Small Block W2 Heads)	$ 35.95
P4286569	Small Block Intake Manifold Gasket Set — 0.060 Thick, with Heat Block Off	$ 39.95
P4876446	Intake Manifold Gasket Set — 0.090" Thick (Small Block W2 Heads)	$ 35.95
P5007154AB	Intake Manifold Gasket Set — 0.045" Thick (Small Block W9 Heads)	$ 29.95
P5249432	Intake Manifold Gasket Set — 0.030" Thick (Small Block W5 Heads)	$ 34.95
P5249480	Intake Manifold Gasket Set — 0.030" Thick (Small Block W7 Heads)	$ 39.95
P5249481	Intake Manifold Gasket Set — 0.045" Thick (Small Block W7 Heads)	$ 39.95
P5249482	Intake Manifold Gasket Set — 0.060" Thick (Small Block W7 Heads)	$ 39.95

INTAKE MANIFOLD SERVICE GASKETS
Gaskets required to service Mopar Performance intake manifolds.

P5007334

Cross Ram Intake Manifold Service Gaskets

$ 10.95

COMPOSITE INTAKE MANIFOLD GASKET SET
Composite material intake gaskets for large port Max Wedge heads originally built in 1962–64 as 413/426 engines. Gaskets offer advantages in reliability and shape, allowing for more port modifications. Package includes 2 gaskets and 2 end seals.

P5249643

Composite Intake Manifold Gasket Set (Max Wedge)

$ 15.95

INTAKE MANIFOLD GASKET HEAT BLOCK-OFF
Stainless steel Intake Manifold Gasket Heat Block-Off blocks exhaust heat from transferring to the intake manifold for a cooler, denser fuel-air mixture.

P4286825	Intake Gasket Heat Block-Off ("B" Engines)	$ 22.95
P4286826	Intake Gasket Heat Block-Off ("RB" Engines)	$ 28.95
P4452103	Race Intake Manifold Gaskets (Production 361/383/400 w/Stage IV/V/Production Heads)	$ 23.95
P4452105	Race Intake Manifold Gaskets (Production 413/426W/440; w/Stage IV/V/Production Heads)	$ 23.95

INTAKE MANIFOLD HEAT SHIELD
Original equipment Heat Shield for all 426 Street Hemi® Intake Manifolds. Bolts to the bottom of the Intake Manifold to prevent hot engine oil from heating the manifold and robbing horsepower. Also fits Aluminum Dual Plane Intake Manifold (P4876188).

P4529431

Intake Manifold Heat Shield (426 Hemi®)

$ 89.95

INTAKE MANIFOLD END SPACERS
These Manifold End Spacers were designed to fill the gap between the intake manifold and the block when installing W5/W7/W9 heads on stock height blocks. Use in conjunction with RTV and standard end seal gaskets. Gasket not included.

P5249619

Intake Manifold End Spacers — Set of 2 (Small Block W5/W7/W9 Heads)

$ 49.95

INTAKE MANIFOLD SCREW SET
Set of 16 Allen screws and washers to attach the race Hemi® cross ram manifold.

P4529330

A-990 Cross Ram Intake Manifold Screw Set (426 Hemi®)

$ 179.95

INTAKE MANIFOLD GASKET REINFORCEMENT BARS
Hard-to-find “B” and “RB” engine Intake Manifold Gasket Reinforcement Bars hold down the intake manifold gasket at the front and back of the block. Sold in pairs.

P5249492	Intake Manifold Gasket Reinforcement Bars ("B" Engines)	$ 59.95
P5249493	Intake Manifold Gasket Reinforcement Bars ("RB" Engines)	$ 69.95

INTAKE MANIFOLD PLUG PACKAGE
Intake Manifold Plug Package consists of 8 manifold plugs. Used in Max Wedge and Hemi® cross ram intake manifolds.

P5249926

Cross Ram Intake Manifold Plug Package (426 Hemi® and Max Wedge)

$ 129.95

BYPASS HOSE
This Bypass Hose is designed to go from the intake manifold to the water pump. Made of heavy-duty silicone rubber. Includes 2 clamps.

P4876373	1970 and newer Small Block Bypass Hose	$ 69.95
P4876374	Intake Manifold Fitting — Adapts Bypass Hose to Manifold	$ 31.95

INTAKE GASKET & HEAT BLOCK OFF PLATE
Stainless steel Heat Block-Off Plate and Intake Gasket keeps exhaust heat from transferring to the Intake Manifold for a cooler, denser fuel-air mixture.

P4286569

Small Block Intake Manifold Gasket Set — 0.060 Thick, with Heat Block Off

$ 10.95

INTAKE MANIFOLD ATTACHING BOLTS
A complete package of bolts required to attach the intake manifold to the cylinder heads.

P4876771

Intake Manifold Attaching Bolts (1967-91 Small Block)

$ 19.95

426 HEMI INTAKE MANIFOLD BOLT PACKAGE
This is a correct assortment studs, nuts and screws for the 426 Street Hemi in line dual 4-BBL intake manifold. Instructions include a diagram with the correct placement of the screws and studs to recreate the correct factory appearance . Each package contains six nuts and 10 screws, each mage to the original Chrysler engineering standards.

P4529977

426 Hemi Intake Manifold Bolt Package

$ 299.95

VALVE COVERS & HARDWARE

HEMI

HEMI BLACK WRINKLE CAST ALUMINUM VALVE COVER SET
Dress up your 426 Hemi® with this handsome Black Wrinkle Cast Aluminum Hemi Valve Cover Set. Painted black wrinkle and finned with Hemi logo cast in. For single-plug cylinder head applications. Uses Street Hemi valve cover rail. Gaskets included.

P5007796

Black Wrinkle Cast Aluminum Valve Cover Set (1966 and Later Street Hemi®)

$ 849.95

HEMI CHROME VALVE COVER SET
Dress up your Hemi® engine compartment with this Chrome Valve Cover Set. Set features quality chrome plating and includes 2 valve covers and gaskets.

P4529338	Chrome Valve Cover Set (426 Hemi®)	$ 649.95
P4120353	Replacement Valve Cover Gaskets — Rubber Reinforced Cork, 2 Per Set (1966-Up Street Hemi®)	$ 69.95

HEMI STAMPED STEEL O.E. BLACK WRINKLE VALVE COVER SET
Original equipment for all 1966–1971 426 Hemi engines, these stamped steel black wrinkle covers have spark plug wire brackets and rubber coated alternator wiring looms. Sets include valve covers, gaskets and hold-down studs and nuts.

P4510577AB	Black Wrinkle Valve Cover Set — includes Oil Fill Cap and Grommets (1970-71 426 Hemi®)	$ 799.95
P4529339AB	Unpainted Valve Cover Set -- includes Breather Cap, PCV Valve and Cap (1966-69 426 Hemi®)	$ 799.95
P4120353	Replacement Valve Cover Gaskets — Rubber Reinforced Cork, 2 Per Set (1966-Up Street Hemi®)	$ 39.95

SERVICE PARTS FOR CAST ALUMINUM VALVE COVERS

P5007499	Breather — Bolt-On (Valve Cover P5007796)	$ 134.95
P5249947	Stud and Nut Kit — Long	$ 49.95
P5249949	Oil Filter Cap — Screw-In	$ 17.95

HEMI CHROME BREATHER CAP
Chrome Breather Cap for use with stamped steel Hemi® Black Wrinkle and Chrome Valve Covers (P4529338, P4510577, P4529339).

P4529896

Push-In Style Breather Cap (1964-69 426 Hemi®)

$ 69.95

HEMI PCV PACKAGE
This kit contains 1 PCV valve cap, a PCV valve and nut, and 1 PCV valve retaining spring. Fits 1964–1969 Hemi valve covers and chrome or black wrinkle valve cover kits. Also can be used to service non-Hemi 60s era push-on style PCV valves.

P4529895

PCV Package (1964-69 426 Hemi®)

$ 169.95

BIG & SMALL BLOCK

DIRECT CONNECTION CHROME VALVE COVERS

Just like the originals from the 70's and are chrome plated with baffles and grommets. The Direct Connection valve covers will add that perfect retro touch for any 318, 340, 360 along with 383, 400 and 440 engines.

Stamped from brand new tooling to ensure superior valve cover sealing around the cylinder head
High luster chrome finish with vintage "Direct Connection:" logo
Package includes two chrome valve covers with built in baffles and rubber grommets

P4349632AB	Small Block "Direct Connection" Chrome Valve Cover Set (318/340/360)	$ 199.95/set
P4349633AB	Big Block "Direct Connection" Chrome Valve Cover Set (383/400/440)	Discontinued

"AS CAST" ALUMINUM VALVE COVER SET
These Cast Aluminum Valve Covers are sold “as cast” so you can set up the breathers the way you want them. Mopar Performance Pentastar logo is cast into each cover. Set includes 2 valve covers and 2 oil filler caps.

P5007615	Big Block As Cast Aluminum Valve Cover Set	$ 169.95
P5007612	Small Block As Cast Aluminum Valve Cover Set	$ 169.95

BLACK WRINKLE CAST ALUMINUM VALVE COVER SET
These high-strength Valve Covers are more rigid than standard aluminum covers, offering better anti-leak properties. Set includes 2 valve covers with baffle built into underside of valve covers and 2 oil filler caps.

P5007614

Big Block Black Wrinkle Cast Aluminum Valve Cover Set

$ 549.95

P5007611AB

Small Block Black Wrinkle Cast Aluminum Valve Cover Set

$ 549.95

BLACK WRINKLE CAST ALUMINUM VALVE COVER SET WITH VALVE COVER GASKETS
These high-strength Valve Covers are more rigid than standard aluminum covers, offering better anti-leak properties. Set includes 2 valve covers with baffle built into underside of valve covers, 2 valve cover gaskets and 2 oil filler caps.

P5007614VC

Big Block Black Wrinkle Cast Aluminum Valve Cover Set

$ 649.95

P5007611ABVC

Small Block Black Wrinkle Cast Aluminum Valve Cover Set

$ 649.95

CHROME VALVE COVER SET
Dress up your engine compartment with this Chrome Valve Cover Set. Includes valve covers and grommets. Quality chrome plating. Stamped steel with Mopar Pentastar logo.

P5007446

Small Block Chrome Valve Cover Set - Mopar Pentastar Logo

$ 209.95

POLISHED CAST ALUMINUM VALVE COVER SET
These high-strength Valve Covers are more rigid than standard aluminum covers, offering better anti-leak properties. Set includes 2 valve covers with baffle built into underside of valve covers, and 2 oil filler caps.

P5007616

Big Block Polished Cast Aluminum Valve Cover Set

$ 599.95

P5007613

Small Block Polished Cast Aluminum Valve Cover Set

$ 569.95

POLISHED CAST ALUMINUM VALVE COVER SET WITH VALVE COVER GASKETS
These high-strength Valve Covers are more rigid than standard aluminum covers, offering better anti-leak properties. Set includes 2 valve covers with baffle built into underside of valve covers, valve cover gaskets and 2 oil filler caps.

P5007616VC

Big Block Polished Cast Aluminum Valve Cover Set

$ 649.95

P5007613VC

Small Block Polished Cast Aluminum Valve Cover Set

$ 549.95

VALVE COVER GASKETS

P4452091

Race Gaskets — Rubber Reinforced Cork (Set of 2)

$ 39.95

VALVE COVER ACCESSORY SET
For stamped steel Valve Covers only. Valve Cover Accessory Set includes 12 chrome-plated screw and washer assemblies, 1 chrome-plated oil filter cap, 2 rubber grommets. Grommet Set and Bolt and Washer Set can also be purchased individually.

P4120272	Valve Cover Accessory Set (Big Block and Small Block)	$ 39.95
P4349620	Chrome Hold-Down Washer Set (12 pcs)	$ 33.95
P5007419	Chrome Valve Cover Grommet Set (Big Block and Small Block)	$ 29.95

BAFFLE AND SCREW PACKAGE
For cast aluminum valve covers only.

P5007052

Baffle and Screw Package (Big Block, Small Block, Truck Magnum/Jeep® Engines)

$ 34.95

VALVE COVER RETAINING SCREW SET
Valve Cover Retaining Screw Set includes 12 screws. For cast aluminum Valve Covers only.

P5007053

Valve Cover Retaining Screw Set (Big Block and Small Block)

$ 28.95

VALVE COVER BOLT KIT
Valve Cover Bolt Kit includes 12 chrome-plated screws for stamped steel and aluminum valve covers.

P5007458

Valve Cover Bolt Kit (Big Block and Small Block)

$ 49.95

CAST ALUMINUM VALVE COVER CHROME BOLT SET
Chrome Bolt Set is designed for cast aluminum valve covers only. Set includes 20 bolts (10 per cover).

P5007620

Small Block Cast Aluminum Valve Cover Bolt Set (Small Block, 5.2L/5.9L Truck Magnum/Jeep® Engines)

$ 49.95

CHROME BREATHER CAPS
Chrome Breather Caps are for use with Mopar Performance cast aluminum valve covers. Use them to fill extra valve cover holes in cast aluminum valve covers. Push-In Style Breather Cap requires the use of Grommet Set (P4529882).

P4529880	Twist-On Bottom Vented Breather Cap (Big Block, Small Block, 5.2L/5.9L Magnum/Jeep® Engines)	$ 39.95
P4529881	Push-In Style Breather Cap (Big Block, Small Block, 5.2L/5.9L Truck Magnum/Jeep® Engines)	$ 34.95
P4529882	Rubber Grommet — for Breather Cap P4529881	$ 18.95
P4120446	Chrome Breather Cap with tube	$ 29.95

VALVES AND VALVE HARDWARE

HEMI VALVES
These stainless valves for your 426 Hemi® engine have swirl-polished under heads that have no flat or ski jump areas. They feature a 5/16" stem diameter and 1 square groove. For use with cast iron and aluminum cylinder heads.

P5249203	Intake Valve — 2.25" Diameter, 5.40" Stem Length (426 Hemi®)	$ 24.95
P5249204	Exhaust Valve — 1.94" Diameter, 4.86" Stem Length (426 Hemi®)	$ 24.95

BIG BLOCK VALVES
These stainless valves have swirl-polished under heads that have no flat or ski jump areas. They feature a 3/8" stem diameter and 1 square groove.

P4876398

Exhaust Valve — 1.88" Diameter, 4.87" Stem Length

$ 20.95

P5249199

Intake Valve — 2.08" Diameter, 4.86" Stem Length

$ 20.95

P5249200

Intake Valve — 2.14" Diameter, 4.86" Stem Length

$ 20.95

P5249201

Exhaust Valve — 1.74" Diameter, 4.87" Stem Length

$ 20.95

P5249202

Exhaust Valve — 1.81" Diameter, 4.87" Stem Length

$ 20.95

P5249866

Intake Valve — 2.18" Diameter, 4.86" Stem Length

$ 20.95

SMALL BLOCK VALVES
These stainless valves for your Small Block engine have swirl-polished under heads that have no flat or ski jump areas. They feature a 3/8" stem and 1 square groove.

P4876397

Intake Valve — 1.88" Diameter, 4.98" Stem Length (340/360 Small Block)

$ 18.95

P4876580

X-Long Race Valve — 2.15" Diameter, 5.40" Stem Length, 5/16" Tulip Stem

$ 18.95

P5249185

Intake Valve — 2.02" Diameter, 4.98" Stem Length (340/360 Small Block)

$ 18.95

P5249186

Intake Valve — 2.08" Diameter, 4.98" Stem Length (340/360 Small Block)

$ 18.95

P5249187

Exhaust Valve — 1.60" Diameter, 4.97" Stem Length (340/360 Small Block)

$ 18.95

P5249188

Exhaust Valve — 1.65" Diameter, 4.97" Stem Length (340/360 Small Block)

$ 18.95

P5249195

Intake Valve — 2.02" Diameter, 5.28" Stem Length (W2/W5 Heads)

$ 18.95

P5249196

Intake Valve — 2.08" Diameter, 5.28" Stem Length (W2/W5 Heads)

$ 18.95

P5249197

Exhaust Valve — 1.60" Diameter, 5.29" Stem Length (W2/W5 Heads)

$ 18.95

P5249198

Exhaust Valve — 1.65" Diameter, 5.29" Stem Length (W2/W5 Heads)

$ 18.95

P5249886

X-Long Race Valve — 1.60" Diameter, 5.40" Stem Length

$ 18.95

VALVE SEALS
Made of high-temp Viton material, these Valve Seals feature a full or semi-umbrella shape for best dual-purpose use. Helps prevent oil seepage down Valve Guides. Not recommended for use with dual Valve Springs. Sold in sets of 16.

P5249661	Valve Seals -- 5/16" Stem Size, 0.530" Guide (426 Hemi®, 5.2L/5.9L Magnum/Jeep® Engines)	$ 34.95
P4120492	Valve Seals — 3/8" Stem Size (Big Block and Small Block)	$ 34.95

RACE VALVE SEALS
These Race Valve Seals are sold in a set of 16.

P3690963

Race Valve Seals — 3/8" Stem Size, 0.530" Guide (Small Block)

$ 36.95

VALVE STEM LASH CAPS
These lash caps are 0.080" thick and fit between the end of the valve and the rocker arm tip. They are made of hardened steel for improved rocker tip durability. Larger area than stock valve tip to help spread the rocker loads. Sold in sets of 16.

P4120626	Valve Stem Lash Caps — 3/8" Stem (426 Hemi®, Big Block, Small Block, Truck, Jeep®)	$ 39.95
P4120635	Valve Stem Lash Caps — 5/16" Stem (426 Hemi®, Big Block, Small Block, Truck, Jeep®)	$ 79.95

VALVE GUIDES
Silicon-bronze alloy Valve Guides are designed modify, rebuild or repair aluminum heads. To replace guides requires removal of the old guide and some prep to resize the guide holes. Guide ID must be sized for the valve stem once pressed into the head.

P4876709	Valve Guide — 5/16" Valve Stem, Intake	$ 16.95
P4876710	Valve Guide — 5/16" Valve Stem, Exhaust	$ 16.95
P5249672	Valve Guide — 3/8" Valve Stem, Intake and Exhaust (Big Block Stage VI)	$ 15.95

VALVE KEEPERS
These single groove style Valve Keepers are made from hardened material. They feature a 5/16" stem diameter and can be used for restoration or performance. Sold as cylinder head sets of 16 pieces (2 sets are required for all V8 engines).

P4529038	Valve Keepers	$ 49.95
P4120618	Valve Keepers (Big Block, Small Block, Slant Six, 3.9L V6)	$ 43.95
P4286612	Valve Keepers (Big Block, Small Block, Slant Six, 3.9L V6)	$ 51.95
P4120619	Valve Keepers	$ 11.95
P4120620	Valve Keepers (Small Block, Slant Six, 3.9L V6)	$ 11.95

* Click here to get more detailed info on valve keeper applications.

VALVE SPRINGS
High-pressure Valve Springs can be used on exhaust and intake valves. They feature a shorter fully compressed height and allow for increased valve lift. Springs maintain spring load at higher rpm's. A must for high-performance cams. Sold individually.

P2806077	Valve Spring (Hemi, Small Block & Big Block)	$ 22.95 ea.
P2946353	Valve Spring (Hemi, Small Block & Big Block)	$ 10.95 ea.
P3690933	Valve Spring (Hemi, Small Block & Big Block)	$ 7.95 ea.
P4007536	Valve Spring (Hemi, Small Block & Big Block)	$ 20.95 ea.
P4286812	Valve Spring (Hemi, Small Block & Big Block)	$ 10.95 ea.
P4876064	Valve Spring (Hemi, Small Block & Big Block)	$ 11.95 ea.
P5249848	Valve Spring (Hemi, Small Block & Big Block)	$ 11.95 ea.
P5249849	Valve Spring (Hemi, Small Block & Big Block)	$ 10.95 ea.
P3412068	Valve Spring (Small Block)	$ 7.95 ea.
P3614542	Valve Spring (Small Block)	$ 17.95 ea.
P4120249	Valve Spring (Small Block)	$ 5.95 ea.
P4286813	Valve Spring (Small Block)	$ 9.95 ea.
P5249847	Valve Spring (Small Block)	$ 10.95 ea.

* Click here to get more detailed info on valve spring applications.

VALVE SPRING RETAINERS
These Valve Spring Retainers for Hemi® engines are available in three levels of performance: steel for restoration, chrome moly for heavy-duty applications and titanium for top-level race performance. Sold individually.

P4120785	Titanium Valve Spring Retainer (426 Hemi®, Big Block, Small Block, Slant Six, 3.9L V6)	$ 19.95
P4286775	Titanium Valve Spring Retainer (426 Hemi®, Big Block, Small Block)	$ 16.95
P4452769	Steel Valve Spring Retainer (426 Hemi®)	$ 15.95
P4529288	Chrome Moly Valve Spring Retainer (426 Hemi®)	$ 11.95
P4452033	Chrome Moly Valve Spring Retainer (Big Block, Small Block, Slant Six, 3.9L V6)	$ 7.95
P4007178	Titanium Valve Spring Retainer (Big Block, Small Block, Slant Six, 3.9L V6)	$ 19.95

ROCKER SHAFTS, SUPPORTS & HARDWARE

ROCKER SHAFTS
These chrome Rocker Shafts are for use with mechanical valve gear. They are sold individually (except where noted).

P5249631	Hemi Rocker Shaft — Intake, On-Center	$ 119.95
P5249632	Hemi Rocker Shaft — Exhaust, On-Center	$ 119.95
P4529101	Big Block Rocker Shafts — Hydraulic Valve Gear, On-Center	$ 72.95
P5249092	Big Block Rocker Shafts — Aluminum Roller Valve Gear, On-Center	$ 92.95
P3577086	Small Block T/A Rocker Shaft — Mechanical Valve Gear, On-Center	$ 259.95
P4120589	Small Block Rocker Shaft — Mechanical Valve Gear, Offset (W2/W5 Heads)	$ 189.95
P4510636	Small Block Hard Chrome Steel Rocker Shaft — Mechanical Valve Gear, On-Center	$ 55.95
P5249091	Small Block Rocker Shaft — Aluminum Roller Valve Gear, On-Center; Set of 2	$ 149.95

ROCKER SHAFT SUPPORTS

P5249505

Blue anodized, extruded aluminum Rocker Shaft Supports for 426 Hemi®. Complete engine set includes 10 pieces plus hardware.

$ 924.95

ROCKER SHAFT END PLUGS
Rocker Shaft End Plugs are sold as a set of 4. They do not fit aftermarket rocker shafts.

P5249633

Rocker Shaft End Plugs (426 Hemi® and Big Block)

$ 28.95

ROCKER SHAFT SPRINGS

P4452827	Rocker Shaft Springs for use on all production-based Hemi® valve gear. Used to locate rockers on the shaft. Includes 14 long springs and 2 short springs. Package contains 1 engine set.	$ 23.95
P4452801	Rocker Shaft Springs for use with Big Block mechanical rocker arms. Use to separate and locate rocker arms on shaft. Package includes 1 engine set (8 springs).	$ 23.95

ROCKER SHAFT HOLD-DOWN
Billet Aluminum Rocker Shaft Hold-Down provides greater rocker shaft stiffness. Helps Rocker Shaft maintain roundness with attaching torque. Roundness is important with mechanical rockers and high spring loads. Anodized blue.

P5249714	Big Block Rocker Shaft Hold-Down	$ 104.95
P5249712	Rocker Shaft Hold-Down (Standard Small Block Heads)	$ 104.95
P5249713	Rocker Shaft Hold-Down (Small Block W2 Heads)	$ 104.95

ROCKER SHAFT RETAINERS & BOLTS
Kits contain previously hard-to-find hold down retainers and bolts necessary to secure both rocker shafts. These retainers are manufactured to Mopar Performance O.E. specs to assure high quality. For use on all cylinder heads with cast-in rocker stands.

P4529744	Big Block Rocker Shaft Retainers and Bolts... In Stock	$ 149.95
P4529740	Small Block Rocker Shaft Retainers and Bolts... In Stock	$ 149.95

ROCKER SHAFT STANDS
Machined from T6061 billet aluminum, these stands securely mount W2/W5 offset rocker shafts. Designed to upgrade cast aluminum rocker stands, these units will not flex, crack or crush. Each set contains 10 stands (6 narrow and 4 wide) and mounting bolts.

P5249049	Billet Aluminum Rocker Shaft Stands (Small Block W2/W5 Heads)	$ 294.95
P5007742	Rocker Shaft Stand (Big Block Stage VI CNC Ported Heads P4876383)	$ 284.95

ROCKER ARMS & HARDWARE

MECHANICAL ROCKER ARMS
These Rocker Arms are made of SAE 1041 forged steel. They feature hardened valve tip pads to help prevent scuffing. Can serve as a replacement for original production rockers. Fits both cast iron and aluminum heads. Sold individually.

P4529705	Hemi Mechanical Rocker Arm Package — Production Ratio, Intake	$ 229.95
P4529706	Hemi Mechanical Rocker Arm Package — Production Ratio, Exhaust	$ 229.95
P4529707	Hemi Mechanical Rocker Arm Package — 1.7 Ratio, Exhaust	$ 229.95
P4529708	Hemi Mechanical Rocker Arm Package — 1.65 Ratio, Exhaust	$ 229.95

* High ratio rockers may require grinding on block and head for pushrod clearance.

STAINLESS STEEL ROLLER TIP ROCKER ARMS
Rocker Arms are made from high-strength, investment grade cast stainless steel. Each features a roller tip to reduce friction and improve geometry. Designed for drag racing and high strength, they use standard Hemi® rocker ratios. Sold individually.

P5249603	Hemi Stainless Steel Roller Tip Rocker — Intake	$ 119.95
P5249604	Hemi Stainless Steel Roller Tip Rocker — Exhaust	$ 119.95

HYDRAULIC ROCKER ARMS & PACKAGES

These Big Block Rocker Arms Packages feature thicker cross-sectional material in pushrod socket area that provides added durability, similar to 440 Six Pack style. Package includes 16 hydraulic rocker arms, rocker shaft retainers and hold-down bolts. Rocker shafts not included.
MP-743	Big Block Hydraulic Rocker Arm Package — 1.5 Ratio	$ 399.95
These Small Block Rocker Arm Packages feature thicker cross-sectional material in pushrod socket area for added durability. Each kit includes 16 heavy-duty Hydraulic Rocker Arms (8 right, 8 left), Rocker Shaft Retainers and Hold-Down Bolts. Rocker shafts not included.
P4529742	Small Block Hydraulic Rocker Arm Package — Standard Heads, 1.5 Ratio	$ 164.95

* For B/RB, the left socket is approximately 1/16" to the right, and the right socket is approximately 1/16" to the left. High-Ratio rockers may require grinding.

CAST IRON/DUCTILE MECHANICAL ROCKER ARMS & PACKAGES
Packages include 16 rocker arms, 8 separator springs (includes Max Wedge), adjusting screws and lock nuts. They feature mechanical lash adjustment with lock-nut and cast iron/ductile iron rocker arms.

P4120974	Big Block Cast Iron Ductile Mechanical Rocker Arm Package — 1.5 Ratio	$ 499.95/set
P5249798	Big Block Service Cast-Iron Ductile Rocker — 1.6 Ratio, Right, Sold Individually	$ 21.95 ea.

* High-Ratio rockers may require grinding on block and head for clearance.

"PRO" RACE ROCKER ARM SYSTEM
Complete Rocker Arm System made of high-strength aluminum, including shafts and bolts. Designed for high rpm, high load racing applications. Roller tip. Needle bearing center pivot. Requires hollow pushrods for oiling.

P5007470

Small Block Rocker Arm System - 0.550" Offset, 1.5 Ratio, 1 Head Only (W9 Heads)

$ 779.95

* High-Ratio rockers may require grinding on block and head for clearance.

Back to the Jim's Mopar Performance Parts Home Page