Availability
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: Tomorrow
Estimated Ship Date: Tomorrow
BUILD IT WITH SUMMIT!
Gen. V BB Chevy Forged Steel Crank, 4.250 stroke, One Piece Rear Seal, Req's Narrowed Rod Bearings, Lightened Rod Journals, Nitride, 6.385 in. Rod
Part Number: SUM-BBC425063852
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Crankshaft, 2-piece Seal, Internal Balance, Forged 4340 Steel, 4.250 in. Stroke, 2.200 in. Pin, Chevy, 454
Part Number: CPI-BBP425-CS
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Gen. 4 BB Chevy Forged Steel Crank, 4.250 stroke, Two Piece Rear Seal, Req's Narrowed Rod Bearings, Lightened holes, Nitride, 6.385 in. Rod
Part Number: SUM-BBC425063851
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Crankshaft, Standard Weight, Forged 4340 Steel, 4.250 in. Stroke, Internal Balance, Chevy, 454, Each
Part Number: SCA-445425C
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Crankshaft, 2-Piece Seal, Internal Balance, 4140 Forged, 4.25 in. Stroke, Chevrolet, Each
Part Number: ESP-545442526385
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Crankshaft, 1-Piece Seal, External Balance, Cast Steel, 4.25 in. Stroke, Chevy, 454, Each
Part Number: ESP-104564250
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.250 in. Stroke, Chevy, 7.4L, Each
Part Number: MAN-190140
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Crankshaft, 2-Piece Seal, External Balance, Cast Steel, 4.25 in. Stroke, Chevy, 454, Each
Part Number: ESP-104544250
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Crankshaft, 2-Piece Seal, Internal Balance, Billet Steel, 4.250 in. Stroke, Chevrolet, Big Block, Each
Part Number: BRO-S0013
Not Yet Reviewed
Estimated Ship Date: Feb 12, 2026 if ordered today
Estimated Ship Date: Feb 12, 2026 if ordered today
Crankshaft, Standard Weight, Forged 4340 Steel, 4.000 in. Stroke, Internal Balance, Chevy, 454, Each
Part Number: SCA-445415C
Not Yet Reviewed
Estimated Ship Date: Mar 12, 2026 if ordered today
Estimated Ship Date: Mar 12, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.250 in. Stroke, 6.385 Rod, Chevy, 454, Each
Part Number: SCA-445425
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.250 in. Stroke, Chevy, 454, Each
Part Number: ESP-445442526385
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.250 in. Stroke, 6.385 Rod, Chevy, 454, Each
Part Number: SCA-445425L
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.250 in. Stroke, Chevy, 454, Each
Part Number: ESP-445642526385
Need It Sooner? We recommend these similar substitute parts:
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: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Billet Steel, 4.500 in. Stroke, Chevrolet, Big Block, Each
Part Number: BRO-S0017
Not Yet Reviewed
Estimated Ship Date: Feb 12, 2026 if ordered today
Estimated Ship Date: Feb 12, 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: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, 4340 Forged Steel, 4.50 in. Stroke, Standard Snout, Chevrolet, Big Block, Each
Part Number: HRS-45445006535
Not Yet Reviewed
Estimated Ship Date: Feb 25, 2026 if ordered today
Estimated Ship Date: Feb 25, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, 6.385 Rod, Chevy, 454, Each
Part Number: SCA-445415
Not Yet Reviewed
Estimated Ship Date: Mar 12, 2026 if ordered today
Estimated Ship Date: Mar 12, 2026 if ordered today
Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.250 in. Stroke, Chevy, 454, Each
Part Number: ESP-445642546385
Not Yet Reviewed
Need It Sooner? We recommend these similar substitute parts:
Crankshaft, 2-piece Seal, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, 2.200 in. Pin, Chevy, 454
Part Number: CPI-BBO425-CS
Estimated Ship Date: Apr 3, 2026 if ordered today
Estimated Ship Date: Apr 3, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.375 in. Stroke, 6.385 Rod, Chevy, 454, Each
Part Number: SCA-445426
Not Yet Reviewed
Estimated Ship Date: Mar 12, 2026 if ordered today
Estimated Ship Date: Mar 12, 2026 if ordered today
Crankshaft, 2-Piece Seal, External Balance, Forged 4340 Steel, 4.250 in. Stroke, Chevy, 454, Each
Part Number: SCA-445425-2
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
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: Tomorrow
Estimated Ship Date: Tomorrow
Modal Header
Call To Order
This is a custom order part. You can order this part by Contacting Us.
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
Summit Racing™ Forged Crankshafts SUM-BBC425063852
