Exterior Components› Body Panels and Components

SEALED POWER

CAST PISTON

$103.85

SKU: S03T H897CP 20

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Special Order
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The Sealed Power H897CP 20 is a hypereutectic engine piston designed for enhanced strength and wear resistance. This flat head piston features a standard bore diameter of 4 inches and a bore of 4.020 inches (102.108mm). It is constructed from an aluminum alloy with 16 percent silicon, contributing to its durability.

These pistons are suitable for high-performance street, bracket, and oval track racing applications. The design helps improve cylinder sealing for reduced blow-by and retains standard ring gaps for optimal performance. The H897CP 20 is specified for Mercruiser 3.0 and Chevy 181 marine engines, particularly those producing 140hp.

Fitment

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Specifications

BrandSEALED POWER
Part NumberS03T H897CP 20

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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