Engines and Components› Pistons and Piston Rings

United Engine & Machine Co

CHEVROLET 502 ROD 6.135 OC HOLLOW DOME .650 43CC 1V Icon FHR Piston Set

$132.48

SKU: U00B IC994.004

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Description

The United Engine & Machine Co IC994.004 is a set of forged aluminum pistons designed for high-performance applications. These pistons feature a dome style with a single valve relief and a hollow dome measuring 0.650 inches. With a bore size of 4.470 inches and a compression height of 1.645 inches, they are intended for an 8.2L engine displacement.

The pistons are constructed from a 2618 aluminum alloy, known for its strength and durability under demanding conditions such as very high compression ratios. The included ring pack consists of 1/16, 1/16, and 3/16 sizes. The compression ratio achieved is between 11.9:1 and 13.1:1, depending on the specific engine configuration.

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B IC994.004

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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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