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...

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Hot Rods Crankshafts for 1985-1986 ATC250R, 1986 TRX250R - 421-4006

Crankshaft Assembly, Forged 8620 Steel, Each

Part Number: HRI-4006

Not Yet Reviewed

Estimated Ship Date: Jan 27, 2026 if ordered today

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Estimated Ship Date: Jan 27, 2026 if ordered today

ARP Pro Series Cylinder Head Studs 145-4006

ARP Pro Series Cylinder Head Studs 145-4006

Cylinder Head Studs, Hex Nuts, Chrysler, Big Block, with Stock, Edelbrock RPM Heads, Kit

Part Number: ARP-145-4006

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

All Balls Countershaft Bushings, Bearings, and Seals 25-4006

Countershaft seal kit

Part Number: ALB-25-4006

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Peterson Fluid Systems R4 Oil Pumps 04-4006

Oil Pump, R4, Dry Sump, Four Stage, High Volume, Standard Rotation, Left Side Mount, Rear Drive, Each

Part Number: PFF-04-4006

Not Yet Reviewed

Estimated Ship Date: Jan 27, 2026 if ordered today

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Estimated Ship Date: Jan 27, 2026 if ordered today

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Harland Sharp Heavy-Duty Rocker Shafts 4006S-1

Rocker Arm Shaft, Heavy-Duty, Steel, Ford, 427/428, FE, Each

Part Number: CSP-4006S-1

Not Yet Reviewed

Estimated Ship Date: Today

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MAHLE Original Pistons 224-4006-0.50MM

PISTON

Part Number: MAH-2244006050MM

Not Yet Reviewed

Estimated Ship Date: Feb 3, 2026 if ordered today

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Estimated Ship Date: Feb 3, 2026 if ordered today

Mahle Original OE Replacement Pistons S224-4006

Single Piston

Part Number: MAH-S2244006

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

Harland Sharp Original Roller Rockers S4006BKE

Rocker Arms, Roller Tip/Bronze Bushed Rockers, 1.76 Ratio, Aluminum, Shafts, End Supports, Ford, Big Block, FE, Kit

Part Number: CSP-S4006BKE

4.44 out of 5 stars ( 9 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Harland Sharp Original Roller Rockers 4006NB-1

Rocker Arms, Originial Roller, Shaft Mount, 1.76 Ratio, Aluminum, Orange Anodized, Ford, Big Block FE, Each

Part Number: CSP-4006NB-1

Not Yet Reviewed

Estimated Ship Date: Today

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March Performance Power Steering Brackets 40061-08

Power Steering Bracket, Aluminum, Black Powdercoated, Front/Rear, Driver Side, Mopar, Small Block, Kit

Part Number: MCH-40061-08

Not Yet Reviewed

Estimated Ship Date: Feb 25, 2026 if ordered today

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Estimated Ship Date: Feb 25, 2026 if ordered today

March Performance Power Steering Brackets 40061

Power Steering Bracket, Aluminum, Clear Powdercoated, Front/Rear, Driver Side, Mopar, Small Block, Kit

Part Number: MCH-40061

3.6 out of 5 stars ( 5 )

Estimated Ship Date: Feb 25, 2026 if ordered today

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Estimated Ship Date: Feb 25, 2026 if ordered today

Wiseco Powersports Piston Kits for 1968-1973 CB350K SUPER SPORT, CL350 SCRAMBLER - 40060M06550