Engines and Components› Pistons and Piston Rings
United Engine & Machine Co
CAST PISTON 4.6L GM
SKU: U00B 1412.030
Advanced — 4+ hours
Description
These pistons feature a flat top with four valve reliefs and have a 3.905-inch bore. They are manufactured from cast aluminum and machined to produce a unique diamond finish, with exacting skirt tolerances. The pistons are heat-treated and machined for strength and durability, offering tighter piston-to-cylinder wall clearances and longer piston life. This set includes a press-fit wrist pin and is sold as a set of 8.
Fitment
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Specifications
| Brand | United Engine & Machine Co |
| Part Number | U00B 1412.030 |
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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