Engines and Components› Pistons and Piston Rings

SEALED POWER

RING OIL RAIL

$19.10

SKU: S03T MD50SU990 .50MM

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

Easy — 1–2 hours

Description

The Sealed Power MD50SU990 is a piston ring set designed for engine repair. These rings are constructed from ductile iron, a durable material known for its strength and wear resistance. The set is .50MM oversized, indicating it is intended for use in engines with cylinders that have been bored out beyond their original specifications.

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.

Available on iOS & Android

Specifications

BrandSEALED POWER
Part NumberS03T MD50SU990 .50MM

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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