Engines and Components› Pistons and Piston Rings
SEALED POWER
RING SET, PISTON .020 OS
SKU: S03T FP-3802863
Moderate — 2–4 hours
Description
It comes with a 2-year parts and labor warranty and includes one oil piston ring and two compression piston rings. This product is specifically designed for Cummins 4B 3.9L, 6B 5.9L, and 4B 4.5L engine models.
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.
Available on iOS & Android
Specifications
| Brand | SEALED POWER |
| Part Number | S03T FP-3802863 |
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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