Product Description
Cummins 3049221 O-ring seal for compatible Cummins diesel engines, including select 855, ISX, and ISM configurations. Designed to provide a secure seal in engine cooling system connections, helping prevent coolant leaks during operation.
Used in compatible water pump assemblies, water tube connections, and other engine components depending on engine configuration.
The PAI 121228 replacement features a nominal 1.109-inch inside diameter and 0.139-inch cross-section.
Cross-references include PAI 121228, FP Diesel FP3049221, and Interstate-McBee M-3049221.
Verify engine model, serial number, sealing location, dimensions, and original equipment part number before ordering.
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