Product Description
Cummins DEF Injector Fitting O-Ring 2880306 is designed to provide a secure seal at the diesel exhaust fluid (DEF) doser injector connection on compatible Cummins aftertreatment systems.
This replacement O-ring helps prevent DEF leaks and maintain proper sealing between the injector and fluid line fittings. Proper sealing supports reliable DEF delivery during selective catalytic reduction (SCR) system operation.
Used in select Cummins diesel engine aftertreatment configurations, including systems equipped with doser injector 2888173 and connector 2880305.
Suitable for replacement during DEF injector servicing, aftertreatment system maintenance, or repairs involving leaking or damaged fittings.
Sold individually. Verify compatibility with your engine serial number and DEF injector configuration before ordering.
