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Engines & Components

Engines & Engine Parts

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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.

Showing All Items, Including Not in Stock Items That Match "4140"

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Results 1 - 25 of 513

Eagle Forged 4140 Steel Crankshafts 534640006100

Eagle Forged 4140 Steel Crankshafts 534640006100

Eagle Forged 4140 Steel Crankshafts 534640006100

Crankshaft, 4140 Steel, Forged, 4.000 in. Stroke, Chevy LS1, 24-Tooth Reluctor, Each

Part Number: ESP-534640006100

Not Yet Reviewed

Estimated Ship Date: Today

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Eagle Forged 4140 Steel Crankshafts 545442526385

Eagle Forged 4140 Steel Crankshafts 545442526385

Eagle Forged 4140 Steel Crankshafts 545442526385

Crankshaft, 2-Piece Seal, Internal Balance, 4140 Forged, 4.25 in. Stroke, Chevrolet, Each

Part Number: ESP-545442526385

Not Yet Reviewed

Estimated Ship Date: Today

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Eagle Forged 4140 Steel Crankshafts 534740006100

Eagle Forged 4140 Steel Crankshafts 534740006100

Eagle Forged 4140 Steel Crankshafts 534740006100

Crankshaft, 1-Piece Seal, Internal Balance, Forged 4140 Steel, 4.000 in. Stroke, 58-Tooth Reluctor, Chevy, LS, Each

Part Number: ESP-534740006100

Not Yet Reviewed

Estimated Ship Date: Jun 1, 2026 if ordered today

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Estimated Ship Date: Jun 1, 2026 if ordered today

Eagle Forged 4140 Steel Crankshafts 535037505700

Eagle Forged 4140 Steel Crankshafts 535037505700

Eagle Forged 4140 Steel Crankshafts 535037505700

Crankshaft, 2-Piece Seal, Internal Balance, Forged 4140 Steel, 3.750 in. Stroke, Chevy, 5.7L, Stroker, Each

Part Number: ESP-535037505700

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Eagle Forged 4140 Steel Crankshafts 534636226100

Eagle Forged 4140 Steel Crankshafts 534636226100

Eagle Forged 4140 Steel Crankshafts 534636226100

Crankshaft, One-piece Seal, Internal Balance, Forged 4140 Steel, 3.622 in. Stroke, 6.100 in. Rod Length, Chevrolet, Small Block LS, Each

Part Number: ESP-534636226100

Not Yet Reviewed

Estimated Ship Date: Today

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Isky 4140 Chromoly Split Valve Locks VL1132

Isky 4140 Chromoly Split Valve Locks VL1132

Isky 4140 Chromoly Split Valve Locks VL1132

Valve Locks, Machined, Hardened Steel, 7 Degree, 1-Groove, 11/32 in. Valve Stem, Set of 32

Part Number: ISK-VL-11-32

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Isky 4140 Chromoly Split Valve Locks VL101132

Isky 4140 Chromoly Split Valve Locks VL101132

Isky 4140 Chromoly Split Valve Locks VL101132

Valve Locks, Machined, Chromoly, 10 Degree, 1-Groove, 11/32 in. Valve Stem, Set of 32

Part Number: ISK-VL-10-11-32

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Isky 4140 Chromoly Split Valve Locks VL10516

Isky 4140 Chromoly Split Valve Locks VL10516

Isky 4140 Chromoly Split Valve Locks VL10516

Valve Locks, Machined, Chromoly, 10 Degree, 1-Groove, 5/16 in. Valve Stem, Set of 32

Part Number: ISK-VL-10-5-16

Not Yet Reviewed

Estimated Ship Date: Jun 3, 2026 if ordered today

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Estimated Ship Date: Jun 3, 2026 if ordered today

Eagle Forged 4140 Steel Crankshafts 523136255967

Eagle Forged 4140 Steel Crankshafts 523136255967

Eagle Forged 4140 Steel Crankshafts 523136255967

Crankshaft, Internal Balance, Forged 4140 Steel, 3.625 in. Stroke, Buick, 3.8L, Each

Part Number: ESP-523136255967

Not Yet Reviewed

Estimated Ship Date: Today

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Isky 4140 Chromoly Split Valve Locks VL750

Isky 4140 Chromoly Split Valve Locks VL750

Isky 4140 Chromoly Split Valve Locks VL750

Valve Locks, Machined, Chromoly, 7 Degree, 1-Groove, 11/32 in. Valve Stem, Set of 32

Part Number: ISK-VL-750

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 26, 2026 if ordered today

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Estimated Ship Date: May 26, 2026 if ordered today

Isky 4140 Chromoly Split Valve Locks VL38

Isky 4140 Chromoly Split Valve Locks VL38

Isky 4140 Chromoly Split Valve Locks VL38

Valve Locks, Machined, Chromoly, 7 Degree, 1-Groove, 3/8 in. Valve Stem, Set of 32

Part Number: ISK-VL3-8

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jun 25, 2026 if ordered today

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Estimated Ship Date: Jun 25, 2026 if ordered today

Eagle Forged 4140 Steel Crankshafts 535337505700

Eagle Forged 4140 Steel Crankshafts 535337505700

Eagle Forged 4140 Steel Crankshafts 535337505700

Crankshaft, Internal Balance, Forged 4140 Steel, 3.75 in. Stroke, Chevrolet, Small Block, Each

Part Number: ESP-535337505700

Not Yet Reviewed

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Summit Racing™ Cast SBC 350 Crankshaft SUM-180368

Summit Racing™ Cast SBC 350 Crankshaft SUM-180368

2.25 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Isky 4140 Chromoly Split Valve Locks VL1038

Isky 4140 Chromoly Split Valve Locks VL1038

Isky 4140 Chromoly Split Valve Locks VL1038

Valve Locks, Machined, Chromoly, 10 Degree, 1-Groove, 3/8 in. Valve Stem, Set of 32

Part Number: ISK-VL-10-3-8

Not Yet Reviewed

Estimated Ship Date: Jun 25, 2026 if ordered today

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Estimated Ship Date: Jun 25, 2026 if ordered today

Edelbrock Classic Cast Aluminum Valve Covers 4140

Edelbrock Classic Cast Aluminum Valve Covers 4140

Edelbrock Classic Cast Aluminum Valve Covers 4140

Valve Covers, Classic Series, Stock Height, Cast Aluminum, Polished, Edelbrock Logo, Chevy, Big Block W, Pair

Part Number: EDL-4140

4.0 out of 5 stars ( 1 )

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Edelbrock Classic Cast Aluminum Valve Covers 41403

Edelbrock Classic Cast Aluminum Valve Covers 41403

5 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Trick Flow® Roller Rocker Arms TFS-41400621

Trick Flow® Roller Rocker Arms TFS-41400621

Trick Flow® Roller Rocker Arms TFS-41400621

Rocker Arms, 1.7 Ratio, 7/16 in. Stud, Full Roller Design, Aluminum, Big Chevy, Set of 16

Part Number: TFS-41400621

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

D.S.S. FX-Series Forged Piston and Ring Kits K1-6600-4140

Made in the USA D.S.S. FX-Series Forged Piston and Ring Kits K1-6600-4140

D.S.S. FX-Series Forged Piston and Ring Kits K1-6600-4140

Piston Set, 360 AMC V8 K1-FX Series -3cc AMC Flat Top Piston Set. 4.140 bore

Part Number: DMS-K1-6600-4140

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits with XR Wrist Pins K3-6600-4140

Made in the USA D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits with XR Wrist Pins K3-6600-4140

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits with XR Wrist Pins K3-6600-4140

Piston Set, 360 AMC V8 K3-FX Series -3cc AMC Flat Top Piston Set. 4.140 bore

Part Number: DMS-K3-6600-4140

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Edelbrock Classic Cast Aluminum Valve Covers 41409

Made in the USA Edelbrock Classic Cast Aluminum Valve Covers 41409

Edelbrock Classic Cast Aluminum Valve Covers 41409

Valve Covers, Classic Series, Stock Height, Cast Aluminum, Satin, Edelbrock Logo, Chevy, Big Block W, Pair

Part Number: EDL-41409

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Pioneer Automotive Harmonic Balancer Repair Sleeves HB-4140

Pioneer Automotive Harmonic Balancer Repair Sleeves HB-4140

Pioneer Automotive Harmonic Balancer Repair Sleeves HB-4140

HARM BAL SLEEVE

Part Number: PIO-HB-4140

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

D.S.S. FX-Series Forged 4032 Alloy Piston and Ring Kits K1-6605-4140

Made in the USA D.S.S. FX-Series Forged 4032 Alloy Piston and Ring Kits K1-6605-4140

D.S.S. FX-Series Forged 4032 Alloy Piston and Ring Kits K1-6605-4140

Piston Set, 360 AMC V8 K1-FX Series -21cc AMC Dish Top Piston Set. 4.140 bore

Part Number: DMS-K1-6605-4140

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits K2-6600-4140

Made in the USA D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits K2-6600-4140

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits K2-6600-4140

Piston Set, 360 AMC V8 K2-FX Series -3cc AMC Flat Top Piston Set. 4.140 bore

Part Number: DMS-K2-6600-4140

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits K2-6605-4140

Made in the USA D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits K2-6605-4140

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits K2-6605-4140

Piston Set, 360 AMC V8 K2-FX Series -21cc AMC Dish Top Piston Set. 4.140 bore

Part Number: DMS-K2-6605-4140

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Pistons 2-6605-4140

Made in the USA D.S.S. FX-Series Forged 2618 Alloy Pistons 2-6605-4140

D.S.S. FX-Series Forged 2618 Alloy Pistons 2-6605-4140

Piston Set, 360 AMC V8 2-FX Series -21cc AMC Dish Top Piston Set. 4.140 bore

Part Number: DMS-2-6605-4140

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

D.S.S. FX-Series Forged 4032 Alloy Pistons 1-6605-4140

Made in the USA D.S.S. FX-Series Forged 4032 Alloy Pistons 1-6605-4140

D.S.S. FX-Series Forged 4032 Alloy Pistons 1-6605-4140

Piston Set, 360 AMC V8 1-FX Series -21cc AMC Dish Top Piston Set. 4.140 bore

Part Number: DMS-1-6605-4140

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Pistons 2-6600-4140

Made in the USA D.S.S. FX-Series Forged 2618 Alloy Pistons 2-6600-4140

D.S.S. FX-Series Forged 2618 Alloy Pistons 2-6600-4140

Piston Set, 360 AMC V8 2-FX Series -3cc AMC Flat Top Piston Set. 4.140 bore

Part Number: DMS-2-6600-4140

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today