Exterior Components› Body Panels and Components

United Engine & Machine Co

SNGL HYP/CTD PISTON 7.4L MERC

$63.25

SKU: U00B S3474HC.030

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Description

The Silv-O-Lite S3474HC.030 is a hypereutectic piston designed for a 4.280 in. bore and stock engine stroke. It features a dome style with two valve reliefs and is constructed from a hypereutectic aluminum alloy high in silicon for increased strength and resistance to scuffing and seizure.

This piston includes a press-fit wrist pin and has a coated skirt for enhanced durability. The ring groove thickness is specified as 5/64 in. x 5/64 in. x 3/16 in. Piston rings are not included with this piston.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B S3474HC.030

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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