Engines and Components› Pistons and Piston Rings

United Engine & Machine Co

KB HYP PISTON KIT SBC 350

$629.04

SKU: U00B KB231KTD.040

In Stock
In Stock
Ships by Jun 7
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Professional / shop required

Description

Keith Black Hypereutectic pistons are designed for high-performance Chevrolet Small Block V8 Gen I 5.7L (350 cubic inches) engines. They feature a 4.040-inch bore, +6cc flat top, and are made from durable 390 Hypereutectic Alloy, ideal for marine, drag race, circle track, street, or towing applications. Wrist pins and spiral locks are included.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB231KTD.040

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.

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