Exterior Components› Body Panels and Components

United Engine & Machine Co

CHEVY 400 ROD 5.700 FLAT TOP 7CC 2V RIGHT KB SINGLE HYPER PISTON

$80.23

SKU: U00B SKB139R.040

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Description

The United Engine & Machine SKB139R.040 piston is an oversize piston designed for engine rebuilding. It features a bore of 4.04 inches (102.62mm) and a stroke of 3.5 inches (88.9mm).

This piston has a compression ratio of 10.5:1. The pin diameter is 0.945 inches (24mm), with a wall thickness of 0.15 inches. It requires a deck clearance of 0.025 inches and has a dish volume of 8.0cc.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B SKB139R.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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