70415 O-Ring Seal
Find engine service parts by category and part number. Please provide the engine serial number and photographs of the existing component so fitment and supply origin can be verified before order.



70415 Cummins O-Ring Seal
- Leak Prevention : Functions as a critical sealing barrier to prevent fluid or air leakage in high-pressure engine systems (fuel, oil, or coolant lines depending on application).
- Durable Construction : Manufactured from high-grade elastomeric compounds that resist degradation from high heat, oil exposure, and vibration.
- Exact Fitment : Engineered to OEM dimensional specifications to ensure tight sealing and prevent premature wear or blowouts under operating pressure.
- Maintenance & Overhaul : Essential component used during routine engine servicing, rebuilds, and preventative maintenance to protect internal engine components.
Cummins catalogs list part 70415 as an O-ring seal in QSK78 CM500 coolant corrosion-resistor option WF6038-10 and in lower-engine gasket kit 4956090. Provide the engine serial number (ESN) and the seal’s installation position so we can check the correct parts diagram.
- Product reference
- 70415
Ordering & compatibility
Before ordering
Provide the part number, engine model and serial number, required quantity and, if available, photos of the existing component so fitment can be checked.
Confirm the supply scope
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Discuss 70415 O-Ring Seal
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