Engines and Components› Pistons and Piston Rings

United Engine & Machine Co

HYP/COATED PISTON 3.1L GM

$47.85

SKU: U00B 1486HC.1.5MM

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Description

The United Engine & Machine Co 1486HC.1.5MM is a set of hypereutectic aluminum pistons designed for specific GM, Isuzu, Chevrolet, Oldsmobile, and Pontiac V6 engines. These pistons feature a flat dish style with no valve reliefs and a 90.500mm bore size. They are intended as replacements for original equipment numbers and are sold as a set of 6.

Key specifications include a compression height of 1.450 inches, a piston head volume of +12.00cc, and wrist pin diameter of 0.905 inches. The ring grooves measure 1.5mm, 1.5mm, and 4.0mm. These pistons also feature a coated skirt and require shallow rings.

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B 1486HC.1.5MM

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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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