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Engines & Engine Parts

Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched...

Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched top end kits, and complete rotating assemblies from the biggest names in the industry. You can add a set of high-flow cylinder heads to your powerplant, upgrade your valvetrain, improve your oiling system, or drop in a new set of pistons. We also have a complete selection of crankshafts, connecting rods, harmonic balancers, pulleys, and engine brackets. We even have everything you need to restore the horsepower that time has stolen from your...

Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched top end kits, and complete rotating assemblies from the biggest names in the industry. You can add a set of high-flow cylinder heads to your powerplant, upgrade your valvetrain, improve your oiling system, or drop in a new set of pistons. We also have a complete selection of crankshafts, connecting rods, harmonic balancers, pulleys, and engine brackets. We even have everything you need to restore the horsepower that time has stolen from your daily driver.

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Individual Parts

Part Groups

Results 1 - 25 of 2000 +

Proform Super-Street Roller Rocker Arms 66907

Proform Super-Street Roller Rocker Arms 66907

Proform Super-Street Roller Rocker Arms 66907

Rocker Arms, Super-Street, Stud Mount, Full Roller, Aluminum, Narrow Body, 1.5 Ratio, Fits 3/8 in. Stud, Chevy, Small Block, Set of 16

Part Number: PRO-66907

4.36 out of 5 stars ( 36 )

Estimated Ship Date: Today

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Proform GM Licensed Slant Edge Valve Covers 141-921

Proform GM Licensed Slant Edge Valve Covers 141-921

Proform GM Licensed Slant Edge Valve Covers 141-921

Valve Covers, Cast Aluminum, Black Powdercoat, Tall, Chevrolet, Bowtie Emblem, Chevy, Small Block, Pair

Part Number: PRO-141-921

4.75 out of 5 stars ( 53 )

Estimated Ship Date: Today

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Proform Stamped Steel Chevrolet Valve Covers 141-905

Proform Stamped Steel Chevrolet Valve Covers 141-905

Proform Stamped Steel Chevrolet Valve Covers 141-905

Valve Covers, Tall, Steel, Chrome, Chevrolet Logo, Chevy, Small Block, Pair

Part Number: PRO-141-905

4.52 out of 5 stars ( 42 )

Estimated Ship Date: Today

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Proform Super-Street Roller Rocker Arms 66911

Proform Super-Street Roller Rocker Arms 66911

Proform Super-Street Roller Rocker Arms 66911

Rocker Arms, Super-Street, 3/8 in. Stud Mount, Full Roller, Aluminum, 1.6 Ratio, Ford, Small Block, Set of 16

Part Number: PRO-66911

3.45 out of 5 stars ( 20 )

Estimated Ship Date: Today

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Proform GM Licensed Chevy Engine Dress Up Kits 141-758

Proform GM Licensed Chevy Engine Dress Up Kits 141-758

Proform GM Licensed Chevy Engine Dress Up Kits 141-758

Engine Dress-Up, High-Tech Collector's Series, Valve/Timing Covers, Air Cleaner, Breather, Black Crinkle, Kit

Part Number: PRO-141-758

4.83 out of 5 stars ( 72 )

Estimated Ship Date: Today

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Proform Stamped Steel Chevrolet Valve Covers 141-750

Proform Stamped Steel Chevrolet Valve Covers 141-750

Proform Stamped Steel Chevrolet Valve Covers 141-750

Valve Covers, Stock Height, 1.22 in. Dia. Holes, with 0.75 in. I.D./1 in. I.D. Grommets, Steel, Black Crinkle, Chevrolet Logo, Chevy, Small Block,Pair

Part Number: PRO-141-750

4.95 out of 5 stars ( 42 )

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Proform GM Licensed Diecast Aluminum Chevrolet Valve Covers 141-130

Proform GM Licensed Diecast Aluminum Chevrolet Valve Covers 141-130

Proform GM Licensed Diecast Aluminum Chevrolet Valve Covers 141-130

Valve Covers, Tall, Cast Aluminum, Polished, Chevrolet Logo, Centerbolt, Chevy, Small Block, Pair

Part Number: PRO-141-130

4.45 out of 5 stars ( 53 )

Estimated Ship Date: Today

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Proform Pushrods 66891C

Proform Pushrods 66891C

Proform Pushrods 66891C

Pushrods, Chromoly, Heat-Treated, 5/16 in. Diameter, Stock Length, Chevy, Small Block, Set of 16

Part Number: PRO-66891C

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Proform GM Licensed Diecast Aluminum Chevrolet Valve Covers 141-131

Proform GM Licensed Diecast Aluminum Chevrolet Valve Covers 141-131

Proform GM Licensed Diecast Aluminum Chevrolet Valve Covers 141-131

Valve Covers, Tall, Cast Aluminum, Black Wrinkle, Chevrolet Logo, Centerbolt, Chevy, Small Block, Pair

Part Number: PRO-141-131

4.67 out of 5 stars ( 33 )

Estimated Ship Date: Today

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Proform Stamped Steel Chevrolet Valve Covers 141-899

Proform Stamped Steel Chevrolet Valve Covers 141-899

Proform Stamped Steel Chevrolet Valve Covers 141-899

Valve Covers, Steel, Chrome, Chevrolet Logo, Chevy, Small Block, Pair

Part Number: PRO-141-899

4.5 out of 5 stars ( 70 )

Estimated Ship Date: Today

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Proform Pedestal Mount Extruded Aluminum Roller Rocker Arms 66879

Proform Pedestal Mount Extruded Aluminum Roller Rocker Arms 66879

Proform Pedestal Mount Extruded Aluminum Roller Rocker Arms 66879

Rocker Arms, Pedestal Mount, Full Roller, Aluminum, 1.6 Ratio, Ford, 302/351W, Set of 16

Part Number: PRO-66879

3.6 out of 5 stars ( 25 )

Estimated Ship Date: Today

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Proform Super-Street Roller Rocker Arms 66914C

Proform Super-Street Roller Rocker Arms 66914C

Proform Super-Street Roller Rocker Arms 66914C

Rocker Arms, Stud Mount, Self-Aligning, Full Roller, Aluminum, 1.5 Ratio, Fits 3/8 in. Stud, Chevy, Small Block

Part Number: PRO-66914C

4.09 out of 5 stars ( 11 )

Estimated Ship Date: Today

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Proform GM Licensed Slant Edge Valve Covers 141-939

Proform GM Licensed Slant Edge Valve Covers 141-939

Proform GM Licensed Slant Edge Valve Covers 141-939

Valve Covers, Slant-Edge, Tall, Perimeter Bolt Mounting Style, Chevrolet Logo, Chevy, Small Block, Pair

Part Number: PRO-141-939

4.82 out of 5 stars ( 11 )

Estimated Ship Date: Today

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Proform GM Licensed Chevy Engine Dress Up Kits 141-900

Proform GM Licensed Chevy Engine Dress Up Kits 141-900

Proform GM Licensed Chevy Engine Dress Up Kits 141-900

Engine Dress-Up Kit, Chrome, Tall Valve Covers/Air Cleaner/Timing Cover/Breather, Chevy, Small Block, Kit

Part Number: PRO-141-900

4.89 out of 5 stars ( 19 )

Estimated Ship Date: Today

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Proform Air Breather Caps for Chevrolet 141-614

Proform Air Breather Caps for Chevrolet 141-614

Proform Air Breather Caps for Chevrolet 141-614

Valve Cover Breather, Round, Push-in, Steel, Black Crinkle Top, Bowtie Emblem, Chevy, Each

Part Number: PRO-141-614

4.83 out of 5 stars ( 18 )

Estimated Ship Date: Today

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Proform Stamped Steel Chevrolet Valve Covers 141-813

Proform Stamped Steel Chevrolet Valve Covers 141-813

Proform Stamped Steel Chevrolet Valve Covers 141-813

Valve Covers, Tall, Steel, Chrome, Chevrolet Logo, Chevy, Big Block, Pair

Part Number: PRO-141-813

4.02 out of 5 stars ( 43 )

Estimated Ship Date: Today

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Proform Chevy Bowtie Timing Chain Covers 141-753

Proform Chevy Bowtie Timing Chain Covers 141-753

Proform Chevy Bowtie Timing Chain Covers 141-753

Timing Cover, 1-Piece, Steel, Black, Chevrolet and Bowtie Emblems, Chevy, Small Block, Each

Part Number: PRO-141-753

4.32 out of 5 stars ( 28 )

Estimated Ship Date: Today

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Proform GM Licensed Slant Edge Valve Covers 141-930

Proform GM Licensed Slant Edge Valve Covers 141-930

Proform GM Licensed Slant Edge Valve Covers 141-930

Valve Covers, Cast Aluminum, Chrome, Slant-Edge, Chevrolet, Bowtie Emblem, Chevy, Small Block, Pair

Part Number: PRO-141-930

4.85 out of 5 stars ( 27 )

Estimated Ship Date: Today

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Proform Stamped Steel Chevrolet Valve Covers 141-751

Proform Stamped Steel Chevrolet Valve Covers 141-751

Proform Stamped Steel Chevrolet Valve Covers 141-751

Valve Covers, Tall, Steel, Black Wrinkle, Chevrolet Logo, Chevy, Small Block, Pair

Part Number: PRO-141-751

4.57 out of 5 stars ( 30 )

Estimated Ship Date: Today

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Proform Mopar Licensed Small Block Engine Dress-Up Kits 440-758

Proform Mopar Licensed Small Block Engine Dress-Up Kits 440-758

Proform Mopar Licensed Small Block Engine Dress-Up Kits 440-758

Engine Dress-Up Kit, Valve Covers, Valve Cover Wing Nuts, Air Cleaner, Breather, Black Crinkle Powdercoated, MOPAR Logo, Small Block Mopar, LA, Kit

Part Number: PRO-440-758

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Proform GM Licensed Slant Edge Valve Covers 141-877

Proform GM Licensed Slant Edge Valve Covers 141-877

Proform GM Licensed Slant Edge Valve Covers 141-877

Valve Covers, Slant Edge, Tall, Perimeter Bolt, Cast Aluminum, Chrome Powdercoated, Chevrolet Logo Top Style, Chevrolet, Big Block, Pair

Part Number: PRO-141-877

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Proform GM Licensed Slant Edge Valve Covers 141-924

Proform GM Licensed Slant Edge Valve Covers 141-924

Proform GM Licensed Slant Edge Valve Covers 141-924

Valve Covers, Cast Aluminum, Orange, Tall, Chevrolet, Bowtie Emblem, Chevy, Small Block, Pair

Part Number: PRO-141-924

4.8 out of 5 stars ( 25 )

Estimated Ship Date: Today

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Proform Slant Edge Aluminum Breather Caps 141-858

Proform Slant Edge Aluminum Breather Caps 141-858

Proform Slant Edge Aluminum Breather Caps 141-858

Breather, Push-in, Aluminum, Black Textured, Bowtie Logo, Each

Part Number: PRO-141-858

5.0 out of 5 stars ( 13 )

Estimated Ship Date: Today

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Proform Super-Street Roller Rocker Arms 66915

Proform Super-Street Roller Rocker Arms 66915

Proform Super-Street Roller Rocker Arms 66915

Rocker Arms, Super-Street, Stud Mount, Full Roller, Aluminum, 1.6 Ratio, Fits 3/8 in. Stud, Chevy, Small Block, Set of 16

Part Number: PRO-66915

3.82 out of 5 stars ( 22 )

Estimated Ship Date: Today

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Proform Stamped Steel Mopar Valve Covers 440-751

Proform Stamped Steel Mopar Valve Covers 440-751

Proform Stamped Steel Mopar Valve Covers 440-751

Valve Covers, Steel, Black Crinkle, Mopar Logo, Mopar, Small Block LA, Pair

Part Number: PRO-440-751

4.82 out of 5 stars ( 22 )

Estimated Ship Date: Today

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