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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Results 1 - 25 of 85

Mr. Gasket Gold Rocker Arm Nuts 920G

Rocker Arm Nuts, Stamped Steel Rockers, 3/8 in.-24 Thread, .603 in. Outside Diameter, Set of 16

Part Number: MRG-920G

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Howards Cams Retrofit Hydraulic Roller Camshafts 220275-12

Howards Cams Retrofit Hydraulic Roller Camshafts 220275-12

Camshaft, Retrofit, Hydraulic Roller Tappet, Advertised Duration 294/300, Lift .581/.603, Ford, 351W, Each

Part Number: HRS-220275-12

Not Yet Reviewed

Estimated Ship Date: Mar 4, 2026 if ordered today

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Estimated Ship Date: Mar 4, 2026 if ordered today

COMP Cams 4-Pattern Hydraulic Roller Camshafts 12-471-44

Camshaft, Hydraulic Roller, 271/269 intake, 283/281 Exhaust, .603/.600 in. Intake Lift, .590/.587 in Exhaust

Part Number: CCA-12-471-44

Not Yet Reviewed

Estimated Ship Date: Mar 5, 2026 if ordered today

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Estimated Ship Date: Mar 5, 2026 if ordered today

Cam Motion Camshafts 05-17-0134

Camshaft, Titan 2 Gen 5 LT 6.2 Cam, Duration at .050": 222/234, 114 Lobe Separation Angle, Lift with 1.8 - .612"/.603"

Part Number: CXM-05-17-0134

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

COMP Cams Street Valve Locks 603-16

Valve Locks, Stamped, Hardened Steel, 7 Degree, 1-Groove, 3/8 in. Valve Stem, Set of 32

Part Number: CCA-603-16

4.73 out of 5 stars ( 11 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

COMP Cams Street Valve Locks 603-1

Valve Lock, Stamped, Hardened Steel, 7 Degree, 1-Groove, 3/8 in. Valve Stem, Pair

Part Number: CCA-603-1

Not Yet Reviewed

Estimated Ship Date: Mar 5, 2026 if ordered today

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Estimated Ship Date: Mar 5, 2026 if ordered today

COMP Cams Street Valve Locks 603-12

Valve Locks, Stamped, Hardened Steel, 7 Degree, 1-Groove, 3/8 in. Valve Stem, Set of 24

Part Number: CCA-603-12

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Dorman Valve Covers 264-603

Engine Valve Cover

Part Number: RNB-264-603

Not Yet Reviewed

Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

COMP Cams Thumpr Hydraulic Flat Tappet Camshafts 10-603-5

Camshaft, Hydraulic Flat Tappet, Advertised Duration 287/304, Lift .500/.486, AMC V8, Each

Part Number: CCA-10-603-5

Not Yet Reviewed

Estimated Ship Date: Mar 5, 2026 if ordered today

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Estimated Ship Date: Mar 5, 2026 if ordered today

COMP Cams Thumpr Hydraulic Flat Tappet Camshafts 31-603-5

Camshaft, Hydraulic Flat Tappet, Advertised Duration 295/312, Lift .512/.497, Ford, Small Block, Each

Part Number: CCA-31-603-5

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Mar 5, 2026 if ordered today

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Estimated Ship Date: Mar 5, 2026 if ordered today

Speedflow USA Oil Filters SF-603-G12-PM1212-BLK

Oil Filter

Part Number: SFL-S00022

Not Yet Reviewed

Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Wiseco Powersports Pro-Lite Piston Kits for 1992 KX125 - 603M05600

Piston and Ring Kit, Forged Aluminum, 56.000mm Bore, Kawasaki, Kit

Part Number: WIS-603M05600

Not Yet Reviewed

Estimated Ship Date: Feb 5, 2026 if ordered today

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Estimated Ship Date: Feb 5, 2026 if ordered today

Wiseco Powersports Pro-Lite Piston Kits for 1991 KX125 - 603M05650

Engine Piston, Kawasaki KX125 '91 ProLite 2224CS

Part Number: WIS-603M05650

Not Yet Reviewed

Estimated Ship Date: Feb 5, 2026 if ordered today

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Estimated Ship Date: Feb 5, 2026 if ordered today

Wiseco Powersports Pro-Lite Piston Kits for 1992 KX125 - 603M05700

Piston and Ring Kit, Forged Aluminum, 57.000mm Bore, Kawasaki, Kit

Part Number: WIS-603M05700

Not Yet Reviewed

Estimated Ship Date: Feb 5, 2026 if ordered today

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Estimated Ship Date: Feb 5, 2026 if ordered today

ICON Premium Forged Piston and Ring Kits IC603KTD.040

Piston and Ring Kits, Premium, Forged 2618 Aluminum, 4.290 in. Bore, 4.250 in. Stroke, Dome, Chevy, Big Block, Set of 8

Part Number: UEM-IC603KTD-040

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

ICON Premium Forged Piston and Ring Kits IC603KTD.030

Piston and Ring Kits, Premium, Forged 2618 Aluminum, 4.280 in. Bore, 4.250 in. Stroke, Dome, Chevy, Big Block, Set of 8

Part Number: UEM-IC603KTD-030

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

ICON Premium Forged Pistons IC603.040

ICON Forged Piston - Chevy 489 Rod 6.385 oc Hollow Dome .650 -43cc 1V

Part Number: UEM-IC603-040

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

ICON Premium Forged Piston and Ring Kits IC603KTD.100

Piston and Ring Kits, Premium, Forged 2618 Aluminum, 4.350 in. Bore, 4.250 in. Stroke, Dome, Chevy, Big Block, Set of 8

Part Number: UEM-IC603KTD-100

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Melling Cylinder Sleeves CSL603

Cylinder Sleeve, Cast Iron, 3.433 in. Bore I.D., 0.094 in. Wall Thickness, 5.813 in. Length, Each

Part Number: MEL-CSL603

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

ICON Premium Forged Pistons IC603.100

Pistons, Forged, 4.350 in. Bore, Hollow Dome, Chevy, Set of 8

Part Number: UEM-IC603-100

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

ICON Premium Forged Pistons IC603.030

Pistons, Premium Forged, Dome, 4.280 in. Bore, Chevy, Big Block, Set of 8

Part Number: UEM-IC603-030

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

ICON Pistons, Custom Order SIC603.030

ICON Forged Single Piston - Chevy 489 Rod 6.385 oc Hollow Dome .650 -43cc 1V

Part Number: UEM-SIC603-030

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

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ICON Premium Forged Pistons SIC603.125

Pistons, Premium, Forged 2618 Aluminum, 4.375 in. Bore, 4.250 in. Stroke, Dome, Chevy, Big Block, Each

Part Number: UEM-SIC603-125

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Call to Order

ICON Pistons, Custom Order SIC603.STD

ICON Forged Single Piston - Chevy 489 Rod 6.385 oc Hollow Dome .650 -43cc 1V

Part Number: UEM-SIC603-STD

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Call to Order

Edelbrock Performer Cylinder Heads 60329

Cylinder Head, Performer, Aluminum, Assembled, 60cc Chamber, 170cc Intake Runner, Ford, 289, 302, 351W, Each

Part Number: EDL-60329

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

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