Exterior Components› Body Panels and Components

United Engine & Machine Co

SINGLE CAST PISTON 6.6L GM

$60.34

SKU: U00B S1635.040

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $100
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

SINGLE CAST PISTON 6.6L GM

MIA's Description

The United Engine & Machine Co S1635.040 is a cast aluminum piston designed for specific V8 engines. It features a dish-style head with no valve reliefs and a bore size of 4.391 inches. This piston is sold individually and includes a press-fit wrist pin.

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

BrandUnited Engine & Machine Co
Part NumberU00B S1635.040

Videos

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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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