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Eagle Forged 4340 Steel Crankshafts 440042106625
Part Number: ESP-440042106625
Eagle Forged 4340 Steel Crankshafts
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.210 in. Stroke, 2.249 Rod Bearings, Each
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Estimated Ship Date: Oct 29, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
440042106625
Part Type:
Product Line:
Summit Racing Part Number:
ESP-440042106625
UPC:
793348018621
Engine Stroke (in.):
4.210 in.
Crankshaft Material:
Forged 4340 steel
Engine Balance:
Internal
Rear Main Seal Style:
2-piece
Lightened:
No
Requires Narrow Bearings:
Yes
Rod Bearings Included:
No
Main Bearings Included:
No
Rod Journal Diameter (in.):
2.249
Main Journal Diameter (in.):
3.000 in.
Balancer Bolt Thread Size:
5/8 in.-18
Crankshaft Snout Style:
Standard
Quantity:
Sold individually.
Notes:
Buick rod bearings.
Eagle Forged 4340 Steel Crankshafts
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.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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