Performance Auto Parts for LS Swaps, Muscle Cars & Modern Builds

Shop thousands of in-stock performance parts from trusted brands—engine upgrades, suspension, exhaust, fuel systems, and more. Fast shipping and real-world support from fellow car enthusiasts.

Proform Engine Dress-Up Kit; Chrome w/Red Chevy Logo; Fits SB Block Chevy Engines 141-900

$317.95
BCHW_141-900
Accessories All Dress-Up Kits Engine Covers, Pans and Dress-Up Components Engine Dress Up Kit Engines and Components Proform Sale Underhood Accessories
This engine dress-up kit features a great looking chrome finish with red "Bowtie" logos and black "Chevrolet" lettering. Made from high quality steel material....

Proform Engine Valve Cover 141-842

$327.96 $317.95
BCHW_141-842
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
The center bolt family of valve covers now can enjoy the wildly popular Slant-Edge look that Gen 1 and LS enthusiasts have been enjoying....

Proform Differential Cover 141-695

$201.95
BCHW_141-695
.Differentials All Differential Differential Cover Differential Covers Differentials and Rear-End Components Driveline and Axles Drivetrain Proform Sale
Reinforced lightweight aluminum rear end cover designed to strengthen the rear housing case in heavy torque situations. The familiar Bowtie Emblem is raised and...

Proform Raised Chevy and Bowtie Emblems 141-831

$190.26 $180.95
BCHW_141-831
.AirFuelDelivery Air and Fuel Air and Fuel Delivery Air Cleaner Assemblies and Air Intake Kits Air Cleaner Assembly Air Cleaners, Filters, Intakes and Components All Carburetion Proform Sale
NEW Slant-Edge Air Cleaners are the perfect way to complete your dress-up look in premium Slant-Edge style. Initially six of the most popular styles...

Proform Valve Covers-Polshed 141-843

$316.43 $307.95
BCHW_141-843
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
The center bolt family of valve covers now can enjoy the wildly popular Slant-Edge look that Gen 1 and LS enthusiasts have been enjoying....

Proform Engine Dress-Up Kit; Orange w/Black Bowtie Logo; Fits SB Block Chevy Engines 141-780

$317.95
BCHW_141-780
Accessories All Dress-Up Kits Engine Covers, Pans and Dress-Up Components Engine Dress Up Kit Engines and Components Proform Sale Underhood Accessories
Chevy orange valve covers, with their distinctive look and boldly striking Bowtie and CHEVROLET Emblems, inlaid with black paint. For long-term corrosion resistance the...

Proform Engine Crankcase Breather Cap 141-853

$41.95
BCHW_141-853
All Emission Control Engine Covers, Pans and Dress-Up Components Engine Crankcase Breather Cap Engines and Components Hardware, Fasteners and Fittings Proform Sale Valve Cover Breathers and Components
No more stamped steel breather caps for aluminum valve covers! Complete your engine dress-up look with a breather cap that actually matches your look!...

Proform GM PERFORMANCE PARTS HEI DISTRIBUTOR TUNE UP KIT 141-796

$99.95
BCHW_141-796
.Distributors All Distributor Caps Distributors, Magnetos and Crank Triggers Ignition Ignition Tune-Up Kit Ignitions and Electrical Proform Sale Secondary Ignition
This engine distributor tune-up kit includes a black distributor cap. Designed to fit all 1973 through 1990 V8 engines with a GM HEI distributor...

Proform Black Anodized Billet Aluminum 141-820

$41.39 $38.95
BCHW_141-820
.Radiators All Belts and Cooling Cooling & Heating Heating and Cooling Proform Radiator Cap Radiator Caps Radiators Radiators, Coolers and Related Components Sale
Why not make the first thing you see when you open your hood a Bowtie radiator cap? This sleek radiator cap is comprised of...

Proform Timing Chain Cover; Orange; Steel; With Chevy Bowtie Logo; SB Chevy 69-91 141-783

$37.95
BCHW_141-783
All Engine Engine Covers, Pans and Dress-Up Components Engine Timing Cover Engines and Components Proform Sale Timing Covers Valve Train Components
Chevy orange timing chain cover with a distinctive look and boldly striking Bowtie and CHEVROLET Emblems, inlaid with black paint. For long-term corrosion resistance...

Proform Differential Cover 141-697

$243.45 $201.95
BCHW_141-697
.Differentials All Differential Differential Cover Differential Covers Differentials and Rear-End Components Driveline and Axles Drivetrain Proform Sale
Reinforced lightweight aluminum rear end cover designed to strengthen the rear housing case in heavy torque situations. The familiar Bowtie Emblem is raised and...

Proform Engine Valve Covers; Stamped Steel; Short; Orange; w/ Bowtie Logo; Fits BB Chevy 141-789

$134.95
BCHW_141-789
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
Latest Look! For Chevrolet big-block engines, V8, 1965-96. These short stamped steel valve covers are electrostatically painted and baked with a durable high-tech, orange...

Proform Valve Covers; Slant-Edge Tall; Alum; Unpolished w/ Raised Bowtie Logo; SB Chevy 141-939

$276.12 $254.95
BCHW_141-939
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
Looking for a color outside of the 16 versions already available? No problem! Here's a pre-powdercoat version of the popular Chevy Slant-Edge Valve cover...

Proform Sold As One Set Of Four Pieces 141-759

$21.95
BCHW_141-759
All Engine Engine Fastener Kits Engine Valve Cover Nut Fasteners Hardware, Fasteners and Fittings Proform Sale Valve Cover Fastener Kits
These custom valve cover mini nuts feature a Bowtie logo on the top of each fastener. Separate studs are included for precise gasket positioning....

Proform Engine Valve Cover 141-784

$102.95
BCHW_141-784
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
Engine Valve Cover; Stamped Steel Tall Style With Baffles; Orange Epoxy Finish With Black Chevy and Bowtie Logos; Fits 1955 to 1986 262-400 Small...

Proform Recessed Chevy and Bowtie Emblems 141-834

$180.95
BCHW_141-834
.AirFuelDelivery Air and Fuel Air and Fuel Delivery Air Cleaner Assemblies and Air Intake Kits Air Cleaner Assembly Air Cleaners, Filters, Intakes and Components All Carburetion Proform Sale
NEW Slant-Edge Air Cleaners are the perfect way to complete your dress-up look in premium Slant-Edge style. Initially six of the most popular styles...

Proform Engine Crankcase Breather Cap 141-786

$21.95
BCHW_141-786
All Emission Control Engine Covers, Pans and Dress-Up Components Engine Crankcase Breather Cap Engines and Components Hardware, Fasteners and Fittings Proform Sale Valve Cover Breathers and Components
Premium Chevy Orange breather cap. Give your engine a truly unique and striking look. This stamped steel part is electrostatically painted and baked with...

Proform Engine Timing Cover 141-753

$37.95
BCHW_141-753
All Engine Engine Covers, Pans and Dress-Up Components Engine Timing Cover Engines and Components Proform Sale Timing Covers Valve Train Components
Black crinkle valve covers, with their distinctive look and boldly striking Bowtie and CHEVROLET Emblems, inlaid with classic Chevrolet red, are CED painted for...

Proform Valve Covers; Slant-Edge Tall; Die Cast; Black w/Recessed Bowtie Logo; SB Chevy 141-928

$333.54 $317.95
BCHW_141-928
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
New in 2009! These innovative valve covers have an aggressive design that will make your engine stand out at the show. These premium die-cast...

Proform Engine Valve Cover Hold Down Tab 141-903

$26.95
BCHW_141-903
All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Hold Down Tab Engines and Components Proform Sale Valve Cover Hold-Down Tabs
Premium Street Performance Chrome hold-down clamps with distinctive look and boldly striking Bowtie Emblems, inlaid with classic Chevrolet red. By spreading the load over...

Proform Engine Harmonic Balancer Cover 141-726

$42.91 $39.95
BCHW_141-726
All Cylinder Block Components Engine Engine Harmonic Balancer Cover Engines and Components Harmonic Balancer Covers Harmonic Balancers Proform Sale
Harmonic Balancer Cover - Timing Marks - Chevy Bowtie Logo - Aluminum - Chrome - 8 in Balancers - Small Block Chevy - Each

Proform Engine Valve Cover 141-810

$161.64 $143.95
BCHW_141-810
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
Valve Cover - Short - Baffled - Breather Hole - Chevrolet Bowtie Logo - Steel - Black Crinkle - Big Block Chevy - Pair

Proform Engine Crankcase Breather Cap 141-858

$41.95
BCHW_141-858
All Emission Control Engine Covers, Pans and Dress-Up Components Engine Crankcase Breather Cap Engines and Components Hardware, Fasteners and Fittings Proform Sale Valve Cover Breathers and Components
No more stamped steel breather caps for aluminum valve covers! Complete your engine dress-up look with a breather cap that actually matches your look!...

Proform Chevy Black Lettering w/Bowtie Logo 141-785

$108.45 $105.95
BCHW_141-785
.AirFuelDelivery Air and Fuel Air and Fuel Delivery Air Cleaner Assemblies and Air Intake Kits Air Cleaner Assembly Air Cleaners, Filters, Intakes and Components All Carburetion Proform Sale
Chevy Orange is the HOT look right now, and why not complete your engine compartment with a premium 14" air cleaner kit. Chevrolet and...

Proform Engine Valve Cover 141-751

$102.95
BCHW_141-751
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
Valve Cover - Tall - Baffled - Breather Hole - Chevrolet Bowtie Logo - Steel - Black Crinkle - Small Block Chevy - Pair

Proform Made From Cast Aluminum With Natural Finish 141-682

$195.95
BCHW_141-682
.Distributors All Distributor Distributor and Magneto Distributors Distributors, Magnetos and Crank Triggers Ignition Ignitions and Electrical Proform Sale
These premium distributors include Genuine GM Performance Parts melonized gears (USA), which are required on all GM Performance Parts crate engines, or serious damage...

Proform Valve Covers; Slant-Edge Tall; Die Cast; Polished Without Logos; SB Chevy 141-926

$316.59 $275.95
BCHW_141-926
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
New in 2009! These innovative valve covers have an aggressive design that will make your engine stand out at the show. These premium die-cast...

Proform Engine Crankcase Breather Cap 141-857

$41.95
BCHW_141-857
All Emission Control Engine Covers, Pans and Dress-Up Components Engine Crankcase Breather Cap Engines and Components Hardware, Fasteners and Fittings Proform Sale Valve Cover Breathers and Components
No more stamped steel breather caps for aluminum valve covers! Complete your engine dress-up look with a breather cap that actually matches your look!...

Proform Engine Harmonic Balancer Cover 141-727

$39.95
BCHW_141-727
All Cylinder Block Components Engine Engine Harmonic Balancer Cover Engines and Components Harmonic Balancer Covers Harmonic Balancers Proform Sale
Harmonic Balancer Cover - Timing Marks - Chevy Bowtie Logo - Aluminum - Black Anodized - 6-3/4 in Balancers - Small Block Chevy -...

Proform Raised Chevy and Bowtie Emblems 141-832

$180.95
BCHW_141-832
.AirFuelDelivery Air and Fuel Air and Fuel Delivery Air Cleaner Assemblies and Air Intake Kits Air Cleaner Assembly Air Cleaners, Filters, Intakes and Components All Carburetion Proform Sale
NEW Slant-Edge Air Cleaners are the perfect way to complete your dress-up look in premium Slant-Edge style. Initially six of the most popular styles...

Proform Engine Harmonic Balancer Cover 141-729

$42.91 $39.95
BCHW_141-729
All Cylinder Block Components Engine Engine Harmonic Balancer Cover Engines and Components Harmonic Balancer Covers Harmonic Balancers Proform Sale
These patented harmonic balancer covers offer improved readability, more stable Top Dead Center indication and timing accuracy, enhanced appearance for a previously ignored underhood...

Proform Engine Crankcase Breather Cap 141-861

$41.95
BCHW_141-861
All Emission Control Engine Covers, Pans and Dress-Up Components Engine Crankcase Breather Cap Engines and Components Hardware, Fasteners and Fittings Proform Sale Valve Cover Breathers and Components
No more stamped steel breather caps for aluminum valve covers! Complete your engine dress-up look with a breather cap that actually matches your look!...

Proform Engine Crankcase Breather Cap 141-856

$41.95
BCHW_141-856
All Emission Control Engine Covers, Pans and Dress-Up Components Engine Crankcase Breather Cap Engines and Components Hardware, Fasteners and Fittings Proform Sale Valve Cover Breathers and Components
No more stamped steel breather caps for aluminum valve covers! Complete your engine dress-up look with a breather cap that actually matches your look!...

Proform Engine Valve Cover 141-845

$327.96 $317.95
BCHW_141-845
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
The center bolt family of valve covers now can enjoy the wildly popular Slant-Edge look that Gen 1 and LS enthusiasts have been enjoying....

Proform Valve Covers-Chrome 141-812

$143.95
BCHW_141-812
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
These CHEVROLET Bowtie valve covers are made of heavy-gauge steel, 20% thicker than typical aftermarket valve covers, greatly reducing the likelihood of leakage around...

Proform Valve Covers; Slant-Edge Tall; Die Cast; Chrome w/Recessed Bowtie Logo; SB Chevy 141-930

$402.95
BCHW_141-930
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
New in 2009! These innovative valve covers have an aggressive design that will make your engine stand out at the show. These premium die-cast...
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