Engines and Components› Pistons and Piston Rings

SEALED POWER

RING OIL CONTROL SET

$29.84

SKU: S03T SS50U39401.00MM

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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 R-9401 45 is a premium engine piston ring set designed for performance applications. It features top rings coated with Plasma-Moly for decreased friction and resistance to scuffing. The low tension set is recommended for racing applications where file fitting the ring end gap delivers maximum power.

This set is application-specific to ensure a perfect fit and correct operation. The top ring material is Ductile Iron Plasma Moly (Low Tension), the second ring material is Cast Iron, and the oil ring design is a 3 Piece Flex Vent. It is designed for engines with a 4.000-inch bore and is oversized by 0.040 inches, with an outside diameter of 4.0450 inches.

Fitment

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Specifications

BrandSEALED POWER
Part NumberS03T SS50U39401.00MM

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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