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 Valve Covers-Chrome 141-101

$102.91 $100.95
BCHW_141-101
.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 Black Crinkle w/ Red Outline 141-369

$16.95
BCHW_141-369
Air and Fuel Delivery Air Cleaner Fastener Kits Air Cleaner Mounting Nut All Engine Fastener Kits Fasteners Hardware, Fasteners and Fittings Proform Sale
This Chevy Bowtie Emblem air cleaner center nut is now available in the wildly popular black crinkle finish! They fit both 1/4in-20 and 5/16in...

Proform Valve Covers-Polishe 141-266

$317.95
BCHW_141-266
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
Through innovative engineering, PROFORM has developed a valve cover that will take your generic looking stock LS engine, and give it a totally personalized...

Proform Engine Valve Cover Grommet 141-615

$7.95
BCHW_141-615
All Engine Engine Valve Cover Grommet Gaskets and Seals Hardware, Fasteners and Fittings O-rings, Grommets and Vacuum Caps Proform Sale
One Push-in for air breather cap, and one for PCV valveProform Engine Valve Cover Grommet 141-615Specifications: Feature/Benefit One Push-in for air breather cap, and...

Proform Spark Plug Wire Holder 141-636

$16.95
BCHW_141-636
All Ignition Ignition Wire and Related Components Ignitions and Electrical Proform Sale Spark Plug Wire Holder Wire Looms Wiring Components
Using the divisional red color, the CHEVROLET name and Bowtie Emblem are molded onto the black nylon head of each wire loom, mounted on...

Proform Engine Valve Cover 141-131

$257.64 $238.95
BCHW_141-131
.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; Baffled; Center Bolt Style; Black Crinkle Finish With Red Chevy and Bowtie Logos; Fits 1987 to 2000 305-350 Small Block Chevy...

Proform Fuel Pump Block-Off Plate 141-211

$12.95
BCHW_141-211
.AirFuelDelivery .FuelDelivery Air and Fuel Air and Fuel Delivery All Fuel Pump Block-Off Plate Fuel Pump Block-Off Plates Fuel Pumps and Related Components Fuel Pumps, Regulators and Components Proform Sale
Premium Chrome Fuel Block-Off Plate. Stamped with the handsome Chevrolet Bowtie. For use on Big-Block Chevrolet V8s.Proform Fuel Pump Block-Off Plate 141-211Specifications: Feature/Benefit Premium...

Proform Engine Oil Filler Cap 141-630

$14.95
BCHW_141-630
All Engine Engine Covers, Pans and Dress-Up Components Engine Oil Filler Cap Engines and Components Hardware, Fasteners and Fittings Proform Sale Valve Cover Filler Tubes and Caps
This engine oil filler cap includes an embossed Chevrolet Bowtie logo emblem on the top side. This is a push-on style oil filler cap...

Proform Engine Crankcase Breather Cap 141-617

$15.95
BCHW_141-617
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
The top of each air breather cap is embossed handsomely with a raised Bowtie Emblem to compliment the genuine factory-parts appearance of the engine.Proform...

Proform Air Cleaner Mounting Nut 141-328

$14.22 $13.95
BCHW_141-328
Air and Fuel Delivery Air Cleaner Fastener Kits Air Cleaner Mounting Nut All Engine Fastener Kits Fasteners Hardware, Fasteners and Fittings Proform Sale
Premium Air Cleaner Nuts. Available with the distinctive GM and Chevrolet Bowtie Trademarks, these chrome plated zinc die-cast air cleaner center nuts are offered...

Proform Engine Crankcase Breather Cap 141-613

$31.95
BCHW_141-613
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
These popular push-in filter air breathers, with the raised Bowtie Emblem stamped prominently in the top, are offered in two styles: with the heat-shield...

Proform Engine Crankcase Breather Cap 141-614

$29.95
BCHW_141-614
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
These popular push-in filter air breathers, with the raised Bowtie Emblem stamped prominently in the top, are offered in two styles: with the heat-shield...

Proform Engine Crankcase Breather Cap 141-618

$15.95
BCHW_141-618
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
The top of each air breather cap is embossed handsomely with a raised Bowtie Emblem to compliment the genuine factory-parts appearance of the engine.Proform...

Proform For Small Block Chevy 78-82 141-551

$19.95
BCHW_141-551
All Cylinder Block Components Engine Engine Oil Dipstick Engine Oil Dipsticks Engines and Components Oiling Systems Proform Sale
Premium Chrome Oil Dipstick Kit. These kits consist of both the stick and the tube. The sticks have classic hook handles with the Bowtie...

Proform Fits Small Block Chevy using 6-3/4 or 7 Inch Balancer 141-200

$8.95
BCHW_141-200
All Engine Engine Covers, Pans and Dress-Up Components Engine Timing Tab Engines and Components Proform Sale Timing Pointers Valve Train Components
Engine Timing Tab; Chrome Finish; Fits 1955 to 2000 Small Block Chevy 262-400 Engines Using A 6-3/4 Inch or 7 Inch Harmonic Balancer; Made...

Proform Air Cleaner Mounting Nut 141-333

$14.95
BCHW_141-333
Air and Fuel Delivery Air Cleaner Fastener Kits Air Cleaner Mounting Nut All Engine Fastener Kits Fasteners Hardware, Fasteners and Fittings Proform Sale
This carburetor air cleaner center nut is the large Chevrolet "Bowtie" shape and features the black Chevy Bowtie logo center with a red outline....

Proform Spark Plug Wire Holder 141-714

$102.91 $95.95
BCHW_141-714
All Ignition Ignition Wire and Related Components Ignitions and Electrical Proform Sale Spark Plug Wire Holder Wire Looms Wiring Components
This spark plug wire loom set is a linear style made for 7mm-8mm wires. They mount to the engine valve covers and are designed...

Proform Raised "LSX" Emblem Aluminum Valve Covers, Chevy Orange, LS Engines 141-257

$364.37 $317.95
BCHW_141-257
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
Through innovative engineering, PROFORM has developed a valve cover that will take your generic looking stock LS engine, and give it a totally personalized...

Proform Air Cleaner Mounting Nut 141-338

$16.95
BCHW_141-338
Air and Fuel Delivery Air Cleaner Fastener Kits Air Cleaner Mounting Nut All Engine Fastener Kits Fasteners Hardware, Fasteners and Fittings Proform Sale
Give any air cleaner that uses a center nut an exciting new look with a prominent Slant-Edge air cleaner nut. This aluminum Bowtie emblem...

Proform Fuel Pump Block-Off Plate 141-213

$12.95
BCHW_141-213
.AirFuelDelivery .FuelDelivery Air and Fuel Air and Fuel Delivery All Fuel Pump Block-Off Plate Fuel Pump Block-Off Plates Fuel Pumps and Related Components Fuel Pumps, Regulators and Components Proform Sale
Fuel Pump Block-Off Plate; Durable Black Crinkle With Stamped Bowtie Logo; Fits Big Block Chevy V8 Engines; Made From Quality Steel Material; Mounting Bolts...

Proform Sold As One Set of Four Pieces 141-600

$31.95
BCHW_141-600
All Engine Engine Fastener Kits Engine Valve Cover Nut Fasteners Hardware, Fasteners and Fittings Proform Sale Valve Cover Fastener Kits
Premium Chrome Wing Nuts. Chevrolet Bowtie Emblem is cut sharply into the top of each wing nut. The lower ends of the shafts are...

Proform Sold As One Set of 8 Pieces 141-133

$20.95
BCHW_141-133
All Cylinder Block Components Engine Engine Fastener Kits Engine Valve Cover Bolt Kit Engine Valve Cover Hold Down Tab Fasteners Hardware, Fasteners and Fittings Proform Sale Valve Cover Fastener Kits
Fits part numbers: 141-130, 141-131, 141-132, and 141-139Proform Sold As One Set of 8 Pieces 141-133Specifications: Feature/Benefit Fits part numbers: 141-130, 141-131, 141-132, and...

Proform Die-Cast Valve Cover 141-120

$221.33 $211.95
BCHW_141-120
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
These premium valve covers are die-cast aluminum, manufactured to GM specifications, equipped with internal oil drippers and GM-designed baffles. They have raised and milled...

Proform Air Cleaner Mounting Nut 141-336

$16.95
BCHW_141-336
Air and Fuel Delivery Air Cleaner Fastener Kits Air Cleaner Mounting Nut All Engine Fastener Kits Fasteners Hardware, Fasteners and Fittings Proform Sale
Give your center nut style air cleaner an exciting new look with a prominent Extra-Large Bowtie Center Nut. The 3D contoured design with sleek...

Proform Fuel Pump Block-Off Plate 141-210

$12.95
BCHW_141-210
.AirFuelDelivery .FuelDelivery Air and Fuel Air and Fuel Delivery All Fuel Pump Block-Off Plate Fuel Pump Block-Off Plates Fuel Pumps and Related Components Fuel Pumps, Regulators and Components Proform Sale
Premium Chrome Fuel Block-Off Plate. Stamped with the handsome Chevrolet Bowtie. For use on Small-Block Chevrolet V8s.Proform Fuel Pump Block-Off Plate 141-210Specifications: Feature/Benefit Premium...

Proform Air Cleaner Mounting Nut 141-335

$17.35 $16.95
BCHW_141-335
Air and Fuel Delivery Air Cleaner Fastener Kits Air Cleaner Mounting Nut All Engine Fastener Kits Fasteners Hardware, Fasteners and Fittings Proform Sale
Give your center nut style air cleaner an exciting new look with a prominent Extra-Large Bowtie Center Nut. The 3D contoured design with sleek...

Proform Sold Individually 141-659

$149.95
BCHW_141-659
All Alternator Alternator / Generator and Related Components Alternators/Generators and Components Charging Systems Electrical, Charging and Starting Ignitions and Electrical Proform Sale
It is now possible to obtain four sought-after and popular features in one alternator! 100% NEW with absolutely no re-built components. Assured quality with...

Proform Valve Covers-Polish 141-108

$221.33 $211.95
BCHW_141-108
.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 - Die-Cast - Tall - Baffled - Breather Hole - Recessed Chevrolet Bowtie Logo - Aluminum - Polished - Small Block Chevy...

Proform Valve Covers-Orange 141-261

$364.37 $339.95
BCHW_141-261
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
Through innovative engineering, PROFORM has developed a valve cover that will take your generic looking stock LS engine, and give it a totally personalized...

Proform Engine Valve Cover 141-263

$339.95
BCHW_141-263
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
Through innovative engineering, PROFORM has developed a valve cover that will take your generic looking stock LS engine, and give it a totally personalized...

Proform Valve Covers-Chrome 141-117

$317.95
BCHW_141-117
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
These premium valve covers are die-cast aluminum, manufactured to GM specifications, equipped with internal oil drippers and GM-designed baffles. They have recessed Bowtie and...

Proform Fuel Pump Block-Off Plate 141-212

$12.95
BCHW_141-212
.AirFuelDelivery .FuelDelivery Air and Fuel Air and Fuel Delivery All Fuel Pump Block-Off Plate Fuel Pump Block-Off Plates Fuel Pumps and Related Components Fuel Pumps, Regulators and Components Proform Sale
Premium Black Crinkle Fuel Block-Off Plate. Stamped with the handsome Chevrolet Bowtie. For use on Small Block Chevrolet V8s.Proform Fuel Pump Block-Off Plate 141-212Specifications:...

Proform Fits SB Block Chevy Engines 141-001

$180.25 $169.95
BCHW_141-001
Accessories All Dress-Up Kits Engine Covers, Pans and Dress-Up Components Engine Dress Up Kit Engines and Components Proform Sale Underhood Accessories
Chrome Dress-up Kit for Chevrolet Small-Block V8, 1958-86. Includes two short baffled Bowtie valve covers (141-102), plus Bowtie timing chain cover with GM production...

Proform Valve Covers-Chrome 141-103

$105.95
BCHW_141-103
.ValveCoversEngineCovers All Cylinder Block Components Engine Engine Covers, Pans and Dress-Up Components Engine Valve Cover Engines and Components Proform Sale Valve Covers
These engine valve covers are manufactured for high quality stamped steel material. They are tall style valve cover and feature oil breather baffles. The...

Proform Air Cleaner Mounting Nut 141-332

$13.95
BCHW_141-332
Air and Fuel Delivery Air Cleaner Fastener Kits Air Cleaner Mounting Nut All Engine Fastener Kits Fasteners Hardware, Fasteners and Fittings Proform Sale
Premium Air Cleaner Nuts. Available with the distinctive GM and Chevrolet Bowtie Trademarks, these chrome plated zinc die-cast air cleaner center nuts are offered...

Proform For Small Block Chevy 55-77 141-550

$19.95
BCHW_141-550
All Cylinder Block Components Engine Engine Oil Dipstick Engine Oil Dipsticks Engines and Components Oiling Systems Proform Sale
Premium Chrome Oil Dipstick Kit. These kits consist of both the stick and the tube. The sticks have classic hook handles with the Bowtie...
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