Engines and Components Crankshafts and Components

Manley Performance

Manley Chevrolet LS Forged Crankshaft - 4.100in Stroke

$1,553.48

SKU: M004 190158NB

In Stock
In Stock
Ships by Jun 10
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 190158NB

we're providing the core strength your engine build demands. The Pro Series 4340 Alloy Steel Crankshaft is an efficient and precisely balanced foundation for performance, built not just to survive, but to handle extremes across a wide range of applications.

Features:

    • Lightweight Design, 4340 Materials: Available in both 4340 non-twist forged and 4340 ?Turbo-Tuff Billet material, ensuring durability and performance. Gun drilled mains and lightened rod journals contribute to weight reduction, optimizing engine performance. Counterweights are fully profiled to ensure precise balance and stability.
    • Enhanced Strength: A multi-step heat treatment process and nitriding enhance the crankshafts' strength and longevity.
    • Micro-Polished Journals: Large radius journals are micro-polished to reduce friction and enhance performance.
    • Rigorous Quality Assurance: Each crankshaft undergoes stress relief, shot peening, and 100% magnafluxing to meet our stringent quality standards.

Manley Crankshaft, CRANK-4340 FORGE 4.100 STROKE.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandManley Performance
Part NumberM004 190158NB

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy