94011604 OE Upper Radiator Pipe Seal, 2001-2010 GM 6.6L Duramax LB7 LLY LBZ LMM

Upper Radiator Pipe at Thermostat Housing. This seal can be very tough to get in, just the smallest amount of swelling can make it nearly impossible to get back in with out rolling the seal. We have found it best to install the pipe with lube on the seal and keep the o-ring as square as possible when installing.

Application: 2001-2010 Duramax