Exterior Components Body Panels and Components

SEALED POWER

CAST PISTON

$85.69

SKU: S03T H840NCP .75MM

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Sealed Power H840NCP .75MM is a set of six Speed-Pro hypereutectic pistons. These pistons feature a 3.830-inch bore and are constructed from a 16 percent silicon-infused aluminum alloy for enhanced strength and wear resistance.

Designed with permanent-mold technology, these pistons ensure precise fit and tight bore clearances. They are suitable for high-performance street, bracket, and oval track racing applications and work with normal ring end gaps. The pistons have a dish style with no valve reliefs and accommodate press-fit or floating wrist pins.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

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

Available on iOS & Android

Specifications

BrandSEALED POWER
Part NumberS03T H840NCP .75MM

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.

View Full Return Policy