Description
MA3H –
Cummins 212161 is an oil cooler O-ring seal used on Cummins 855-series engine applications. PAI 121217 is the equivalent O-ring and is used in PAI’s Cummins 855-series oil-cooler, cooling-system, upper-gasket, and overhaul kits.
Specifications (PAI 121217 equivalent):
- Inside diameter: 1.171 in / 29.74 mm
- Cross section: 0.139 in / 3.53 mm
- AS568 size: -217
- Material: EPDM
- Durometer: 70
- Finish: Peroxide-cured / optional green TFE coating
Crosses
212161, 211126, 121217, M-212161, M212161, FP-212161, FP212161, 72217


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