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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Sierra Marine Outboard Engine Maintenance Kits 18-9240

Marine Engine Service Kit, Outboard Engine Maintenance, OE 29560, Mercury, Kit

Part Number: RRA-18-9240

Not Yet Reviewed

Estimated Ship Date: May 21, 2026 if ordered today

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Estimated Ship Date: May 21, 2026 if ordered today

Sierra Marine Outboard Engine Maintenance Kits 18-9252

Marine Engine Service Kit, Outboard Engine Maintenance, OE 29510, Mercury, Kit

Part Number: RRA-18-9252

Not Yet Reviewed

Estimated Ship Date: May 21, 2026 if ordered today

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Estimated Ship Date: May 21, 2026 if ordered today

Sierra Marine Outboard Engine Maintenance Kits 18-9250

Marine Engine Service Kit, Outboard Engine Maintenance, OE 29670, Mercury, Kit

Part Number: RRA-18-9250

Not Yet Reviewed

Estimated Ship Date: May 21, 2026 if ordered today

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Estimated Ship Date: May 21, 2026 if ordered today

Sierra Marine Outboard Engine Maintenance Kits 18-9242

Marine Engine Service Kit, Outboard Engine Maintenance, OE 29580, Mercury, Kit

Part Number: RRA-18-9242

Not Yet Reviewed

Estimated Ship Date: May 21, 2026 if ordered today

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Estimated Ship Date: May 21, 2026 if ordered today

Sierra Marine Outboard Engine Maintenance Kits 18-9253

Marine Engine Service Kit, Outboard Engine Maintenance, OE 29520, Mercury, Kit

Part Number: RRA-18-9253

Not Yet Reviewed

Estimated Ship Date: May 21, 2026 if ordered today

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Estimated Ship Date: May 21, 2026 if ordered today

ATK Marine Rebuilt Long Block Engines VMH4

Crate Engine, Marine, 350 C.I.D. 260 HP, Long Block, Assembled, Block Casting 880, Each

Part Number: HME-VMH4

3.43 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines VMM6MA

Engine Long Block, Chev 5.7 Marine Engine

Part Number: HME-VMM6MA

Not Yet Reviewed

Estimated Ship Date: Jun 23, 2026 if ordered today

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Estimated Ship Date: Jun 23, 2026 if ordered today

ATK Marine Rebuilt Long Block Engines DM02

Crate Engine, Marine, Long Block, Assembled, Internal Engine Balance, Cast Iron Heads, Chevy, 350, Each

Part Number: HME-DM02

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines DMK1

Crate Engine, Marine, Long Block, Assembled, External Balance, Cast Iron Heads, Chevy, 454, Each

Part Number: HME-DMK1

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines DMA1

Crate Engine, Marine, Long Block, Assembled, External Balance, Cast Iron Heads, Standard Rotation, Ford, 351W, Each

Part Number: HME-DMA1

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines VMM6

Crate Engine, Marine, Long Block, Assembled, Cast Iron Heads, Standard Rotation, Chevy, 5.7L, Each

Part Number: HME-VMM6

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines DMH4

Crate Engine, Marine, Long Block, Assembled, Cast Iron Heads, Chevy, 350, Each

Part Number: HME-DMH4

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines DMWEMAG

Engine Long Block, 8.1 Liter, 496 Cubic Inch, Marine, Cast Iron, Hydraulic Roller, Camshaft. Scat Rotating Kit, Chevy, Each

Part Number: HME-DMWEMAG

Not Yet Reviewed

Estimated Ship Date: Jun 23, 2026 if ordered today

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Estimated Ship Date: Jun 23, 2026 if ordered today

ATK Marine Rebuilt Long Block Engines DM29

Crate Engine, Marine, Long Block, Assembled, Cast Iron Heads, Chevy, 262 V6, Each

Part Number: HME-DM29

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines VMT23MC

Engine Long Block, 6.0 Liter, 364 C.I. Hydraulic Roller Camshaft, Valve Cover, Oil Pan, Timing Chain Cover, Marine,Catalytic Converter, Chevy LS, Each

Part Number: HME-VMT23MC

Not Yet Reviewed

Estimated Ship Date: Jun 23, 2026 if ordered today

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Estimated Ship Date: Jun 23, 2026 if ordered today

ATK High Performance GM 383 Stage 1 Marine Long Block Crate Engines HP90

Engine Assembly, Stage 1 Crate Engine, Marine, Long Block, 1-Piece Main Seal, Chevy, Small Block, 383, Each

Part Number: HPE-HP90

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines VMB3

Crate Engine, Marine, Long Block, Assembled, Cast Iron Heads, Chevy, 305, Each

Part Number: HME-VMB3

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines DMM6

Crate Engine, Marine, Long Block, Assembled, Cast Iron Heads, Standard Rotation, Chevy, 350, Each

Part Number: HME-DMM6

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines DMC7

Crate Engine, Marine, Long Block, Assembled, Cast Iron Heads, Chevy, 262 V6, Each

Part Number: HME-DMC7

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines DM32

Crate Engine, Marine, Long Block, Assembled, External Balance, Reverse Rotation, Chevy, 454, Each

Part Number: HME-DM32

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines DMW4

Crate Engine, Marine, Long Block, Assembled, Cast Iron Heads, Chevy, 262 V6, Each

Part Number: HME-DMW4

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

BluePrint Engines Marine GM 383 C.I.D. 405 HP Base Stroker Long Block Engines with Cast Components MBP3830CT

Crate Engines, Marine GM 383 C.I.D. 405 HP Base Stroker Long Block with Cast Components, 6.3L/383, Assembled, Chevrolet, Small Block, Each

Part Number: MLL-MBP3830CT

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines DM07

Crate Engine, Marine, Long Block, Assembled, Internal Engine Balance, Cast Iron Heads, Chevy, 305, Each

Part Number: HME-DM07

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines DMK9

Crate Engine, Marine, Long Block, Assembled, Cast Iron Heads, Chevy, 262 V6, Each

Part Number: HME-DMK9

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATK Marine Rebuilt Long Block Engines DMA1R

Crate Engine, Marine, Long Block, Assembled, External Balance, Cast Iron Heads, Reverse Rotation, Ford, 351W, Each

Part Number: HME-DMA1R

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

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