Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededEAGLEPART NUMBER: 356-434741256100
Forged 4340 Steel Crankshaft
$1,17799
Ships on 09/09/2026
Lowest Price GuaranteeGM LS
Forged 4340 Steel CrankshaftGM LS 4.125 in. Stroke Minimum 6.100 in. Rod 2.100 in. Rod Journal Internal Balance 58-Tooth Reluctor
- Requires narrowed bearings
Top-of-the-Line Competition Crankshafts
Eagle Forged 4340 Steel Crankshafts are forged from ASME-certified 4340 steel in a non-twist forging and undergo an X-Ray inspection, magnafluxing, and sonic testing to ensure quality.
Part TypeCrankshaft
Product LineEagle Forged 4340 Steel Crankshafts
BrandEAGLE
Part CategoryPerformance Parts
Crankshaft MaterialForged 4340 steel
Rod Journal Diameter2.1 in (53.3 mm)
Main Journal Diameter2.559 in (64.999 mm)
LightenedNo
QuantitySold individually
Crankshaft Snout StyleStandard
Main Bearings IncludedNo
Engine BalanceInternal
Rod Bearings IncludedNo
Balancer Bolt Thread Size (Mm)M16-2.0
Reluctor Wheel Tooth Quantity58
Rear Main Seal Style1-piece
Requires Narrow BearingsYes
Part FitmentSemi Universal
Engine Stroke4.125 in (104.775 mm)
Vendor Part Number434741256100
Package Qty1
Package TypeEA
No Questions
No Reviews
Some parts are not legal for use in California or other states with similar laws / regulations
