Engines and Components› Pistons and Piston Rings

SEALED POWER

CAST PISTON

$129.25

SKU: S03T 366AP 20

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

Moderate — 2–4 hours

Description

The Sealed Power 366AP 20 is a set of cast aluminum pistons designed for Mopar 383ci big block engines. These pistons feature a flat top design with a bore diameter of 4.2 inches and a compression height of 1.848 inches. The wrist pin style is press-fit.

Fitment

Fitment Guaranteed

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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.

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Specifications

BrandSEALED POWER
Part NumberS03T 366AP 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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