A-3902089-AI O-Ring, Water Pump Sealing
A-3902089-AI O-Ring, Water Pump Sealing
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One New Aftermarket Replacement O-Ring Water Pump Seal for Cummins 6C / 6CT / 6CTA 8.3L Diesel Engines
This water pump mounting O-ring seals the interface between the water pump and the engine block on Cummins 6C, 6CT, and 6CTA 8.3-liter diesel engines. It prevents coolant leaks at the pump mounting surface, maintaining proper cooling system pressure and protecting the engine from overheating. Commonly replaced during water pump service or cooling system overhaul.
Specifications
- Cross-section: 0.139 in (3.53 mm)
- Inside Diameter: 3.859 in (98.02 mm)
- Material: Buna N 70 (Nitrile Rubber)
- O-Ring Series: -241
Compatible Engines
Cummins C-Series 8.3L: 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3
Found in a wide range of applications including on-highway trucks, construction equipment, agricultural machinery, industrial power units, and marine installations powered by the Cummins 8.3L C-Series engine family.
Replaces Part Number(s):
3902089, A-3902089-AI
Aftermarket Interchange Numbers
GGA-2991, 56AX352, 446GC290, 2H3934, M 3902089
New aftermarket replacement part - not remanufactured, not used.
