Exterior Components› Body Panels and Components

United Engine & Machine Co

SINGLE HYPER PISTON 7.4L GM

$51.43

SKU: U00B S3408H.040

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Silvolite S3408H.030 is a hypereutectic aluminum piston designed for Chevy big block Gen V 7.4L/454 engines. It features a dish style with two valve reliefs and a 4.280 inch bore size.

This piston utilizes an aluminum alloy high in silicon for increased strength and resistance to scuffing and seizure. It offers improved groove wear and crown area resistance to cracking, with reinforced top lands and diamond-finished skirts. This piston is sold individually.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B S3408H.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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