Exterior Components› Body Panels and Components

United Engine & Machine Co

SINGLE CAST PISTON 4.2L FORD

$82.43

SKU: U00B S3186.030

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Description

The Silvolite S3186.030 piston is a cast 332 alloy piston designed for 1954 to 1955 Ford 256 Y Block engines. It features a 3.655 in. bore, a 1.857 in. compression height, and a flat top crown volume. The pin diameter is 0.912 in., and it has ring lands measuring 3/32, 3/32, and 3/16 in. This piston has a compression ratio of 8.3:1 and a floating second ring material.

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B S3186.030

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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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