Availability
Crankshafts, Magnum, 4340 Steel, 4.00 in. Stroke, Internal Balance, 58X Reluctor, 1-Piece Main, 2.10 in. Diameter Journal, Lightened, Chevy, LS, Each
Part Number: CPI-APO31V-MG
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Crankshaft, 2-piece Seal, Internal Balance, Forged 4340 Steel, 4.250 in. Stroke, 2.200 in. Pin, Chevy, 454
Part Number: CPI-BBP42B-MG
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Crankshaft, 2-piece Seal, Internal Balance, Forged 4340 Steel, 4.750 in. Stroke, 2.200 in. Pin, Chevy, 454
Part Number: CPI-BBS42B-MG
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
4340 Forged Pro Series
Part Number: SCA-435032-2
Not Yet Reviewed
Estimated Ship Date: Feb 11, 2026 if ordered today
Estimated Ship Date: Feb 11, 2026 if ordered today
Crankshaft, Magnum, 2-piece Rear Main Seal Style, Internal Engine Balance, Forged 4340 Steel, 4.500 in. Stroke, Standard Snout, Chevrolet, 7.4L, Each
Part Number: CPI-BBQ42B-MG
Not Yet Reviewed
4340 Forged Pro Series Big Block Post
Part Number: SCA-773505621
Not Yet Reviewed
Estimated Ship Date: Feb 11, 2026 if ordered today
Estimated Ship Date: Feb 11, 2026 if ordered today
Crankshaft, Magnum, 2-Piece Seal, Forged 4340 Steel, 3.500 in. Stroke, 6.385 in. Rod, 2.200 Pin, Internal Balance, Chevy, Big Block, Each
Part Number: CPI-BBG42B-MG
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
4340 Forged Pro Series Big Block Post
Part Number: SCA-773502021
Not Yet Reviewed
Estimated Ship Date: Feb 11, 2026 if ordered today
Estimated Ship Date: Feb 11, 2026 if ordered today
4340 Forged Pro Series Big Block Post
Part Number: SCA-773508620
Not Yet Reviewed
Estimated Ship Date: Feb 11, 2026 if ordered today
Estimated Ship Date: Feb 11, 2026 if ordered today
4340 Forged Pro Series Big Block Post
Part Number: SCA-773508621
Not Yet Reviewed
Estimated Ship Date: Feb 11, 2026 if ordered today
Estimated Ship Date: Feb 11, 2026 if ordered today
4340 Forged Pro Series
Part Number: SCA-435018-2
Not Yet Reviewed
Estimated Ship Date: Feb 11, 2026 if ordered today
Estimated Ship Date: Feb 11, 2026 if ordered today
4340 Forged Pro Series
Part Number: SCA-435022-2
Not Yet Reviewed
Estimated Ship Date: Feb 11, 2026 if ordered today
Estimated Ship Date: Feb 11, 2026 if ordered today
4340 Forged Pro Series Big Block Post
Part Number: SCA-773507620
Not Yet Reviewed
Estimated Ship Date: Feb 11, 2026 if ordered today
Estimated Ship Date: Feb 11, 2026 if ordered today
4340 Forged Pro Series Big Block Post
Part Number: SCA-773507621
Not Yet Reviewed
Estimated Ship Date: Feb 11, 2026 if ordered today
Estimated Ship Date: Feb 11, 2026 if ordered today
Crank, 2-piece Seal, Internal Balance, Forged 4340 Steel, 3.750 in. Stroke, 2.100 in. Pin, Chevy, 350, BB Post
Part Number: CPI-SMJ11A-MG
Not Yet Reviewed
Estimated Ship Date: Feb 27, 2026 if ordered today
Estimated Ship Date: Feb 27, 2026 if ordered today
Crankshaft, Magnum, 1-Piece Seal, Forged 4340 Steel, 4.250 in. Stroke, 6.385 in Rod, 2.200 Pin, Internal Balance, Chevy, Big Block, GenV, GenVI, Each
Part Number: CPI-IBP42B-MG
Not Yet Reviewed
Estimated Ship Date: Feb 6, 2026 if ordered today
Estimated Ship Date: Feb 6, 2026 if ordered today
Crankshaft, 2-piece seal, Internal balance, Forged 4340 Steel, 3.480 in. Stroke, Chevy, 350, 2.100 Pin, Each
Part Number: CPI-SAF11A-MG
Not Yet Reviewed
Estimated Ship Date: Feb 27, 2026 if ordered today
Estimated Ship Date: Feb 27, 2026 if ordered today
Crankshaft, Magnum, 2-Piece Seal, Forged 4340 Steel, 3.000 in. Stroke, 5.700 in. Rods, 2.100 Pin, Internal Balance, Chevy, Small Block, Each
Part Number: CPI-SAD11A-MG
Not Yet Reviewed
Estimated Ship Date: Feb 6, 2026 if ordered today
Estimated Ship Date: Feb 6, 2026 if ordered today
Crankshaft, Magnum, 2-Piece Seal, Forged 4340 Steel, 3.250 in. Stroke, 5.700 in. Rods, 2.000 Pin, Internal Balance, Chevy, Small Block, Each
Part Number: CPI-SAE-14AMG
Not Yet Reviewed
Estimated Ship Date: Feb 6, 2026 if ordered today
Estimated Ship Date: Feb 6, 2026 if ordered today
Crankshaft, Magnum, Forged 4340 Steel, 3.625 in. Stroke, 6.098 in. Rod, Internal Balance, Chevy, LS7, 58X Reluctor, Long Snout, Each
Part Number: CPI-AWH31WMG
Not Yet Reviewed
Estimated Ship Date: Feb 6, 2026 if ordered today
Estimated Ship Date: Feb 6, 2026 if ordered today
Crankshaft, Magnum, Forged 4340 Steel, 4.000 in. Stroke, 6.125 in. Rod, Internal Balance, Chevy, LS7, 58X Reluctor, Long Snout, Each
Part Number: CPI-AWO31WMG
Not Yet Reviewed
Estimated Ship Date: Feb 6, 2026 if ordered today
Estimated Ship Date: Feb 6, 2026 if ordered today
Crankshaft, Magnum, 2-Piece Seal, Forged 4340 Steel, 3.875 in. Stroke, 6.385 in. Rod, 2.200 Pin, Internal Balance, Chevy, Big Block, Each
Part Number: CPI-BBM42B-MG
Not Yet Reviewed
Estimated Ship Date: Feb 6, 2026 if ordered today
Estimated Ship Date: Feb 6, 2026 if ordered today
Crankshaft, Magnum, 2-Piece Seal, Forged 4340 Steel, 4.250 in. Stroke, 6.385 in. Rod, 2.100 Pin, Internal Balance, Chevy, Big Block, Each
Part Number: CPI-BBP43B-MG
Not Yet Reviewed
Estimated Ship Date: Feb 6, 2026 if ordered today
Estimated Ship Date: Feb 6, 2026 if ordered today
Crankshaft, Magnum, 2-Piece Seal, Forged 4340 Steel, 4.125 in. Stroke, 6.385 in. Rod, 2.200 Pin, Internal Balance, Chevy, Big Block, Each
Part Number: CPI-BBU42B-MG
Not Yet Reviewed
Estimated Ship Date: Feb 6, 2026 if ordered today
Estimated Ship Date: Feb 6, 2026 if ordered today
Crankshaft, Magnum, 2-Piece Seal, Forged 4340 Steel, 3.480 in. Stroke, 5.700 in. Rods, 2.000 Pin, Internal Balance, Chevy, Small Block, Each
Part Number: CPI-SAF14A-MG
Not Yet Reviewed
Estimated Ship Date: Feb 6, 2026 if ordered today
Estimated Ship Date: Feb 6, 2026 if ordered today
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