Description
MA3I – PAI 121315 is an aftermarket O-ring seal used in Cummins heavy-duty engine applications, including ISX / QSX / X15 cooling-system and water-pump related sealing locations. The primary OEM interchange is Cummins 3678723
- Inside diameter: 2.519 in / 64 mm
- Cross-section: 0.118 in / 3 mm
- Approx. outside diameter: 2.755 in / 70 mm
- Material: NBR / nitrile
- Durometer: 70
- Application: Cummins ISX water pump inlet


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