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Eagle Forged 4340 Steel Crankshafts

4.45 out of 5 stars 51 Customer Reviews

Eagle forged 4340 steel crankshafts are great for high performance applications. They feature non-twist forging, undergo a multi-stage heat-treatment process, and a
Eagle forged 4340 steel crankshafts are great for high performance applications. They feature non-twist forging, undergo a multi-stage heat-treatment process, and are stress-relieved and shot-peened. These cranks are X-rayed, magnafluxed, and sonic-tested, so you know you're getting a top-quality piece. Each crankshaft has chamfered oil holes for improved oiling, a .125 in. radius on rod and main journals for increased strength, and the journals are precision-ground and micro-polished to less than 5 R.A. A target bob weight of +/- 2 percent greatly reduces balancing time. Many options are available; order the model r
Eagle forged 4340 steel crankshafts are great for high performance applications. They feature non-twist forging, undergo a multi-stage heat-treatment process, and are stress-relieved and shot-peened. These cranks are X-rayed, magnafluxed, and sonic-tested, so you know you're getting a top-quality piece. Each crankshaft has chamfered oil holes for improved oiling, a .125 in. radius on rod and main journals for increased strength, and the journals are precision-ground and micro-polished to less than 5 R.A. A target bob weight of +/- 2 percent greatly reduces balancing time. Many options are available; order the model recommended for your year/make and engine application.

Results 1 - 25 of 84

Crankshaft, 2-piece Seal, Internal Balance, Forged 4340 Steel, 3.250 in. Stroke, for Use with Small Journal Engines Only, Chevrolet, 5.3L, 5.4L, Each

Part Number: ESP-432732505700

Not Yet Reviewed

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Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.250 in. Stroke, Chevy, 454, Each

Part Number: ESP-445442526385

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.250 in. Stroke, Chevy, 454, Each

Part Number: ESP-445642526385

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 13, 2025 if ordered today

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Estimated Ship Date: Oct 13, 2025 if ordered today

Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.750 in. Stroke, Chevy, 350, Each

Part Number: ESP-435037505700

5.0 out of 5 stars ( 2 )

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Crankshaft, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, Ford, 351W, Each

Part Number: ESP-435140006200

5.0 out of 5 stars ( 1 )

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Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.125 in. Stroke, Chevy, 350, Each

Part Number: ESP-435041256000

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

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Estimated Ship Date: Sep 4, 2025 if ordered today

Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.766 in. Stroke, Chevy, 396, 427, Each

Part Number: ESP-439637666135

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Oct 8, 2025 if ordered today

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Estimated Ship Date: Oct 8, 2025 if ordered today

Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, Chevy, 5.7, 6.0L, Each

Part Number: ESP-434640006100

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Crankshaft, Internal Balance, Forged 4340 Steel, 3.00 in. Stroke, Ford, 302, Each

Part Number: ESP-430230015090

3.0 out of 5 stars ( 3 )

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Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.125 in. Stroke, Chevy, Each

Part Number: ESP-434641256100

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

Crankshaft, Internal Balance, Forged 4340 Steel, 4.140 in. Stroke, Ford, 429, 460, Each

Part Number: ESP-446041402200

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Sep 4, 2025 if ordered today

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Estimated Ship Date: Sep 4, 2025 if ordered today

Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.750 in. Stroke, Chrysler, 413, 426, 440, Each

Part Number: ESP-444237506760

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Sep 4, 2025 if ordered today

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Estimated Ship Date: Sep 4, 2025 if ordered today

Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 3.622 in. Stroke, Chevy, 5.7, 6.0L, Each

Part Number: ESP-434636226100

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.375 in. Stroke, Chevy, 454, Each

Part Number: ESP-445443756385

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.00 in. Stroke, Chrysler, 273, 318, 340, Each

Part Number: ESP-434040006123

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Estimated Ship Date: Oct 9, 2025 if ordered today

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Estimated Ship Date: Oct 9, 2025 if ordered today

Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.000 in. Stroke, Chevy, 327, Small Journal, Each

Part Number: ESP-432730005700

Not Yet Reviewed

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Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.480 in. Stroke, Chevy, 400, Each

Part Number: ESP-440034805700

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

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Estimated Ship Date: Sep 4, 2025 if ordered today

Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.625 in. Stroke, Chevy, 350, Each

Part Number: ESP-435036255700

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.500 in. Stroke, 2.20 Rod Bearings, Each

Part Number: ESP-440045006800

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

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Estimated Ship Date: Sep 4, 2025 if ordered today

Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.150 in. Stroke, Chrysler, 361, 383, 400, Each

Part Number: ESP-440041506760

5.0 out of 5 stars ( 1 )

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Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.250 in. Stroke, Chevy, 454, Each

Part Number: ESP-445642546385

Not Yet Reviewed

Estimated Ship Date: Oct 13, 2025 if ordered today

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Estimated Ship Date: Oct 13, 2025 if ordered today

Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, Chevy, 6.0L, Each

Part Number: ESP-434740006100

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Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.125 in. Stroke, Chevy, 7.0L, Each

Part Number: ESP-442741256100

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Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

Crankshaft, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, Ford, 351W, SVO, Each

Part Number: ESP-435240006200

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Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

Crankshaft, Internal Balance, Forged 4340 Steel, 4.17 in. Stroke, Ford, 351, Windsor, SVO, Each

Part Number: ESP-435241706200

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Estimated Ship Date: Tomorrow

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