Engines and Components› Pistons and Piston Rings

SEALED POWER

PISTON RING SET

$135.16

SKU: S03T E-381K 30

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

Beginner — under 30 min

Description

The Sealed Power E-381K 30 is an engine piston ring set designed for a 4.0000 inch bore diameter. It features a premium grade type and is oversized by 0.030 inches. The set includes a steel top ring with a barrel face and moly material, and a grey iron second ring with a phosphate coating and reverse torsional face design. The oil ring is a 3-piece flex vent design.

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 E-381K 30

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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