Engines and Components› Oiling Systems

SEALED POWER

CAST PISTON - INDIVIDUAL

$57.45

SKU: S03T WH640DCP

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Special Order
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Non-Returnable Item
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Description

The Sealed Power WH640DCP is a hypereutectic piston designed for GM V6 engines with a 4.3L/262ci displacement. It features a dish style with four valve reliefs and a 4.000-inch bore.

Constructed from hypereutectic aluminum alloy, this piston offers increased strength and wear resistance. It includes a wrist pin, but piston rings and retainers are sold separately. The piston skirt is coated with DurOshield® for reduced friction and wear.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandSEALED POWER
Part NumberS03T WH640DCP

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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