Valve Covers

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Skunk2 Racing K Series Ultra Lightweight Magnesium Valve Cover for 2002-2004 Acura RSX (666-05-0200) Skunk2 Racing K Series Ultra Lightweight Magnesium Valve Cover for 2002-2004 Acura RSX (666-05-0200) Quick View

Skunk2 Racing K Series Ultra Lightweight Magnesium Valve Cover for 2002-2004 Acura RSX (666-05-0200)

$472.49
$449.99
BJWR_666-05-0200
Engine Skunk2 Racing Valve Covers
Another Skunk2 first! Our cast Magnesium Valve Cover for the Honda K Series Engine delivers clean aesthetics and reduces weight by 60-percent from OEM....
-5%
GReddy OIL FILLER CAP B-TYPE, 06 SUBARU - CHROME (13901526) Quick View

GReddy OIL FILLER CAP B-TYPE, 06 SUBARU - CHROME (13901526)

$88.00
$83.60
BHXF_13901526
Engine Greddy Valve Covers
With an original GReddy design these CNC billet aluminum oil filler caps will bring class and style to your high performance engine.GReddy Oil Filler...
-5%
GReddy OIL FILLER CAP B-TYPE, 05 HONDA - CHROME (13901525) Quick View

GReddy OIL FILLER CAP B-TYPE, 05 HONDA - CHROME (13901525)

$88.00
$83.60
BHXF_13901525
Engine Greddy Valve Covers
With an original GReddy design these CNC billet aluminum oil filler caps will bring class and style to your high performance engine.GReddy Oil Filler...
-5%
GReddy OIL FILLER CAP B-TYPE, 02 NIS/HON - CHROME (13901522) Quick View

GReddy OIL FILLER CAP B-TYPE, 02 NIS/HON - CHROME (13901522)

$88.00
$83.60
BHXF_13901522
Engine Greddy Valve Covers
With an original GReddy design these CNC billet aluminum oil filler caps will bring class and style to your high performance engine. GReddy Oil...
-5%
GReddy OIL FILLER CAP B-TYPE, 07 SUZUKI - DARK CHROME (13901517) Quick View

GReddy OIL FILLER CAP B-TYPE, 07 SUZUKI - DARK CHROME (13901517)

$88.00
$83.60
BHXF_13901517
Engine Greddy Valve Covers
With an original GReddy design these CNC billet aluminum oil filler caps will bring class and style to your high performance engine.GReddy Oil Filler...
-5%
GReddy OIL FILLER CAP B-TYPE, 06 SUBARU - DARK CHROME (13901516) Quick View

GReddy OIL FILLER CAP B-TYPE, 06 SUBARU - DARK CHROME (13901516)

$88.00
$83.60
BHXF_13901516
Engine Greddy Valve Covers
With an original GReddy design these CNC billet aluminum oil filler caps will bring class and style to your high performance engine.GReddy Oil Filler...
-5%
GReddy OIL FILLER CAP B-TYPE, 02 NIS/HON - DARK CHROME (13901512) Quick View

GReddy OIL FILLER CAP B-TYPE, 02 NIS/HON - DARK CHROME (13901512)

$88.00
$83.60
BHXF_13901512
Engine Greddy Valve Covers
With an original GReddy design these CNC billet aluminum oil filler caps will bring class and style to your high performance engine. GReddy Oil...
-5%
GReddy OIL FILLER CAP B-TYPE, 01 TOYOTA/HYUNDAI - DARK CHROME (13901511) Quick View

GReddy OIL FILLER CAP B-TYPE, 01 TOYOTA/HYUNDAI - DARK CHROME (13901511)

$88.00
$83.60
BHXF_13901511
Engine Greddy Valve Covers
With an original GReddy design these CNC billet aluminum oil filler caps will bring class and style to your high performance engine. GReddy Oil...
-5%
GReddy OIL FILLER CAP B-TYPE, 08 MITSUBISHI - BLUE (13901508) Quick View

GReddy OIL FILLER CAP B-TYPE, 08 MITSUBISHI - BLUE (13901508)

$88.00
$83.60
BHXF_13901508
Engine Greddy Valve Covers
GReddy Oil Filler Cap Type-B08 (GOC-B08 BL MT-A) is made from CNC billet aluminum and coated with a durable Dark Chrome finish. The Mitsubishi...
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GReddy OIL FILLER CAP B-TYPE, 07 SUZUKI - BLUE (13901507) Quick View

GReddy OIL FILLER CAP B-TYPE, 07 SUZUKI - BLUE (13901507)

$88.00
$83.60
BHXF_13901507
Engine Greddy Valve Covers
With an original GReddy design these CNC billet aluminum oil filler caps will bring class and style to your high performance engine.GReddy Oil Filler...
-5%
GReddy OIL FILLER CAP B-TYPE, 06 SUBARU - BLUE (13901506) Quick View

GReddy OIL FILLER CAP B-TYPE, 06 SUBARU - BLUE (13901506)

$88.00
$83.60
BHXF_13901506
Engine Greddy Valve Covers
With an original GReddy design these CNC billet aluminum oil filler caps will bring class and style to your high performance engine.GReddy Oil Filler...
-5%
GReddy OIL FILLER CAP B-TYPE, 05 HONDA - BLUE (13901505) Quick View

GReddy OIL FILLER CAP B-TYPE, 05 HONDA - BLUE (13901505)

$88.00
$83.60
BHXF_13901505
Engine Greddy Valve Covers
With an original GReddy design these CNC billet aluminum oil filler caps will bring class and style to your high performance engine.GReddy Oil Filler...
-5%
GReddy OIL FILLER CAP B-TYPE, 04 MAZDA - BLUE (13901504) Quick View

GReddy OIL FILLER CAP B-TYPE, 04 MAZDA - BLUE (13901504)

$88.00
$83.60
BHXF_13901504
Engine Greddy Valve Covers
With an original GReddy design these CNC billet aluminum oil filler caps will bring class and style to your high performance engine.GReddy Oil Filler...
-5%
GReddy OIL FILLER CAP B-TYPE, 03 MAZDA - BLUE (13901503) GReddy OIL FILLER CAP B-TYPE, 03 MAZDA - BLUE (13901503) Quick View

GReddy OIL FILLER CAP B-TYPE, 03 MAZDA - BLUE (13901503)

$88.00
$83.60
BHXF_13901503
Engine Greddy Valve Covers
With an original GReddy design these CNC billet aluminum oil filler caps will bring class and style to your high performance engine.GReddy Oil Filler...
-5%
GReddy OIL FILLER CAP B-TYPE, 02 NIS/HON - BLUE (13901502) Quick View

GReddy OIL FILLER CAP B-TYPE, 02 NIS/HON - BLUE (13901502)

$88.00
$83.60
BHXF_13901502
Engine Greddy Valve Covers
With an original GReddy design these CNC billet aluminum oil filler caps will bring class and style to your high performance engine. GReddy Oil...
-5%
GReddy OIL FILLER CAP B-TYPE, 01 TOYOTA/HYUNDAI - BLUE (13901501) GReddy OIL FILLER CAP B-TYPE, 01 TOYOTA/HYUNDAI - BLUE (13901501) Quick View

GReddy OIL FILLER CAP B-TYPE, 01 TOYOTA/HYUNDAI - BLUE (13901501)

$88.00
$83.60
BHXF_13901501
Engine Greddy Valve Covers
With an original GReddy design these CNC billet aluminum oil filler caps will bring class and style to your high performance engine. GReddy Oil...
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Blox Racing Billet Honda Oil Cap - Silver (BXAC-00501-SI) Blox Racing Billet Honda Oil Cap - Silver (BXAC-00501-SI) Quick View

Blox Racing Billet Honda Oil Cap - Silver (BXAC-00501-SI)

$36.00
$28.80
GPTQ_BXAC-00501-SI
Blox Racing Engine Valve Covers
Treat your engine right and dress it up with one of BLOX Racing's billet oil cap! BLOX Racing billet oil caps are CNC-machined from...
-20%
Blox Racing Billet Honda Oil Cap - Gunmetal (BXAC-00501-GM) Blox Racing Billet Honda Oil Cap - Gunmetal (BXAC-00501-GM) Quick View

Blox Racing Billet Honda Oil Cap - Gunmetal (BXAC-00501-GM)

$36.00
$28.80
GPTQ_BXAC-00501-GM
Blox Racing Engine Valve Covers
Treat your engine right and dress it up with one of BLOX Racing's billet oil cap! BLOX Racing billet oil caps are CNC-machined from...
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Blox Racing Billet Honda Oil Cap - Blue (BXAC-00501-BL) Blox Racing Billet Honda Oil Cap - Blue (BXAC-00501-BL) Quick View

Blox Racing Billet Honda Oil Cap - Blue (BXAC-00501-BL)

$36.00
$28.80
GPTQ_BXAC-00501-BL
Blox Racing Engine Valve Covers
Treat your engine right and dress it up with one of BLOX Racing's billet oil cap! BLOX Racing billet oil caps are CNC-machined from...
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Blox Racing Billet Honda Oil Cap - Black (BXAC-00501-BK) Blox Racing Billet Honda Oil Cap - Black (BXAC-00501-BK) Quick View

Blox Racing Billet Honda Oil Cap - Black (BXAC-00501-BK)

$36.00
$28.80
GPTQ_BXAC-00501-BK
Blox Racing Engine Valve Covers
Treat your engine right and dress it up with one of BLOX Racing's billet oil cap! BLOX Racing billet oil caps are CNC-machined from...
Radiator Cap Black Type A (1.3 Bar) For Subaru GrimmSpeed Radiator Cap Black Type A (1.3 Bar) For Subaru GrimmSpeed Quick View

GrimmSpeed Radiator Cap - Black Type A (1.3 Bar) - Subaru (113061.A)

$25.00
JBCB_113061.A
Engine GrimmSpeed Valve Covers
Let's face it - engine cooling technology can sometimes seem like a dark magic that is impossible for us mortals to understand. That being...
Oil Cap The Bolt Aluminum CLEAR Zinc For Subaru All EJ/FA Engines GrimmSpeed Oil Cap The Bolt Aluminum CLEAR Zinc For Subaru All EJ/FA Engines GrimmSpeed Quick View

GrimmSpeed "The Bolt" Oil Cap Clear Zinc (120014C)

$59.00
JBCB_120014C
Engine GrimmSpeed Valve Covers
Kick out your old oil cap and tell it to hit the streets, we have a sleeker, much more attractive version to shine up...
Oil Cap The Bolt Aluminum YELLOW Zinc For Subaru All EJ/FA Engines GrimmSpeed Oil Cap The Bolt Aluminum YELLOW Zinc For Subaru All EJ/FA Engines GrimmSpeed Quick View

GrimmSpeed "The Bolt" Oil Cap Yellow Zinc (120014Y)

$59.00
JBCB_120014Y
Engine GrimmSpeed Valve Covers
Kick out your old oil cap and tell it to hit the streets, we have a sleeker, much more attractive version to shine up...
Oil Cap Cool Touch Version 2 Delrin Black For Subaru All EJ/FA Engines GrimmSpeed Oil Cap Cool Touch Version 2 Delrin Black For Subaru All EJ/FA Engines GrimmSpeed Quick View

Grimmspeed Oil Cap "Cool Touch" Version 2 Delrin BLACK - Subaru All EJ/FA Engines (120019)

$59.00
JBCB_120019
Engine GrimmSpeed Valve Covers
Our Delrin "Cool Touch" Oil Cap has been such a popular item over the years that it deserved a refresh! Introducing The GrimmSpeed Cool...
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Skunk2 Racing K Series OEM Valve Cover Hardware for 2002-2004 Acura RSX (666-05-0400) Quick View

Skunk2 Racing K Series OEM Valve Cover Hardware for 2002-2004 Acura RSX (666-05-0400)

$26.24
$24.99
BJWR_666-05-0400
Engine Skunk2 Racing Valve Covers
Replacement valve cover bolt for K series engines. One extra bolt allows usage of OEM valve cover hardware with Skunk2 K Series Ultra Lightweight...
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Skunk2 Racing K Series -10 AN Valve Cover Vent Kit for 2002-2004 Acura RSX (666-05-0300) Quick View

Skunk2 Racing K Series -10 AN Valve Cover Vent Kit for 2002-2004 Acura RSX (666-05-0300)

$26.24
$24.99
BJWR_666-05-0300
Engine Skunk2 Racing Valve Covers
This kit is a direct fit for the Skunk2 Ultra Lightweight Magnesium Valve cover. It includes two -10 ORB to -10 AN fittings that...
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Skunk2 Racing Engine Bay Dress Up Oil Cap (626-99-0081) Skunk2 Racing Engine Bay Dress Up Oil Cap (626-99-0081) Quick View

Skunk2 Racing Engine Bay Dress Up Oil Cap (626-99-0081)

$62.99
$59.99
BJWR_626-99-0081
Engine Skunk2 Racing Valve Covers
Skunk2's Fine Tuning products and accessories, like its Black Billet Oil Caps for most Honda and Acura engines, help put the finishing touches on...
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Skunk2 Racing Engine Bay Dress Up Oil Cap (626-99-0080) Skunk2 Racing Engine Bay Dress Up Oil Cap (626-99-0080) Quick View

Skunk2 Racing Engine Bay Dress Up Oil Cap (626-99-0080)

$62.99
$59.99
BJWR_626-99-0080
Engine Skunk2 Racing Valve Covers
Skunk2's Fine Tuning products and accessories, like its Polished Billet Oil Caps for most Honda and Acura engines, help put the finishing touches onto...
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Skunk2 Racing Engine Bay Dress Up Valve Cover Hardware Kit (649-05-0125) Quick View

Skunk2 Racing Engine Bay Dress Up Valve Cover Hardware Kit (649-05-0125)

$66.14
$62.99
BJWR_649-05-0125
Engine Skunk2 Racing Valve Covers
All Models. Skunk2 is proud to introduce the most unique, low-profile dress-up hardware you've ever seen. An original design, Skunk2's Low Profile Valve Cover...
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Skunk2 Racing Engine Bay Dress Up Valve Cover Hardware Kit (649-05-0120) Quick View

Skunk2 Racing Engine Bay Dress Up Valve Cover Hardware Kit (649-05-0120)

$66.14
$62.99
BJWR_649-05-0120
Engine Skunk2 Racing Valve Covers
All Models. Skunk2 is proud to introduce the most unique, low-profile dress-up hardware you've ever seen. An original design, Skunk2's Low Profile Valve Cover...
-4%
Skunk2 Racing Engine Bay Dress Up Valve Cover Hardware Kit (649-05-0115) Quick View

Skunk2 Racing Engine Bay Dress Up Valve Cover Hardware Kit (649-05-0115)

$66.14
$62.99
BJWR_649-05-0115
Engine Skunk2 Racing Valve Covers
VTEC Only. Skunk2 is proud to introduce the most unique, low-profile dress-up hardware you've ever seen. An original design, Skunk2's Low Profile Valve Cover...
-4%
Skunk2 Racing Engine Bay Dress Up Valve Cover Hardware Kit (649-05-0110) Quick View

Skunk2 Racing Engine Bay Dress Up Valve Cover Hardware Kit (649-05-0110)

$66.14
$62.99
BJWR_649-05-0110
Engine Skunk2 Racing Valve Covers
VTEC Only. Skunk2 is proud to introduce the most unique, low-profile dress-up hardware you've ever seen. An original design, Skunk2's Low Profile Valve Cover...
-4%
Skunk2 Racing Engine Bay Dress Up Oil Cap (626-99-0072) Quick View

Skunk2 Racing Engine Bay Dress Up Oil Cap (626-99-0072)

$55.64
$52.99
BJWR_626-99-0072
Engine Skunk2 Racing Valve Covers
Skunk2's Fine Tuning products and accessories, like its Hard Anodized Billet Oil Caps for most Honda and Acura engines, help put the finishing touches...
-4%
Skunk2 Racing Engine Bay Dress Up Oil Cap (626-99-0071) Quick View

Skunk2 Racing Engine Bay Dress Up Oil Cap (626-99-0071)

$55.64
$52.99
BJWR_626-99-0071
Engine Skunk2 Racing Valve Covers
Skunk2's Fine Tuning products and accessories, like its Black Series Billet Oil Caps for most Honda and Acura engines, help put the finishing touches...
-4%
Skunk2 Racing Engine Bay Dress Up Oil Cap (626-99-0070) Quick View

Skunk2 Racing Engine Bay Dress Up Oil Cap (626-99-0070)

$55.64
$52.99
BJWR_626-99-0070
Engine Skunk2 Racing Valve Covers
Skunk2's Fine Tuning products and accessories, like its Polished Billet Oil Caps for most Honda and Acura engines, help put the finishing touches onto...
-5%
aFe Billet Aluminum Oil Cap (79-12002) aFe Billet Aluminum Oil Cap (79-12002) Quick View

aFe Billet Aluminum Oil Cap (79-12002)

$82.00
$77.90
BKJC_79-12002
aFe Power Engine Valve Covers
Matte Oil Cap by aFe. This all "NEW" aFe oil cap gives styling a whole new aspect. Machined from durable CNC 6061-T6 billet aluminum...
Items 1 to 36 of 45 total


Performance valve covers and their original equipment counterparts are both designed to cover your engine's valvetrain, keeping out dirt and debris while keeping the engine oil inside. But that's where the similarity ends. Most modern engines have hydraulic lifters, and factory valve covers may only get removed once or twice during a standard engine's lifespan. Plus they only have to handle the stock factory engine configuration and state of tune.

In contrast performance engine valve covers are repeatedly removed and installed. Many performance and racing engines have mechanical valvetrains that require routine adjustments, and engines that are pressed to the limit regularly require repairs and rebuilding. These engines may have modified valvetrains and stock valve covers usually aren't tall enough for clearance. And while all engines develop crankcase pressure, racing engines handle it differently.

Thin, factory stamped steel valve covers can't handle repeated removal and installation without the flanges warping, which can result in leaks. Aftermarket valve covers are made stronger, from thicker stamped steel, cast aluminum, or fabricated from sheet aluminum with billet aluminum flanges, and even milled from a solid block of billet aluminum. Aftermarket load spreaders can improve the sealing of stamped steel covers, and modern composite performance gaskets can further improve sealing. T-bolts are available for some applications that allow fast valve cover removal and installation without the need for tools.

Some valvetrains can benefit from stud girdles, which prevent flex at high RPM. These increase the height of the valvetrain and taller aftermarket valve covers are available to provide the clearance. At high RPMs a considerable amount of crankcase pressure is developed, and if not relieved it can blow out gaskets and reduce power. Aftermarket valve covers have provisions for one or more breathers, and often have baffles to allow pressure but not oil to escape. Some drag racing engines use a vacuum pump to suck the air from the engine and reduce pressure, and this can be connected to the valve covers in place of breathers.

But functionality aside, we know that most performance valve covers are installed because they make your engine look much better. That's why our digital shelves are stocked with a huge selection of chrome, anodized, finned, and wrinkle finish performance valve covers, along with the performance gaskets, breathers, and fasteners needed to complete the installation. And because many modern engines have coil-on-plug ignition systems that mount the coils on the valve covers, we offer performance valve covers with coil mounts as well as remote coil mounting brackets so you can have a cleaner, better looking engine compartment.

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