01-16 Upper T-Stat Bypass O-Ring

2001-2016 GM 6.6 Duramax Upper T-Stat Bypass O-Ring

This is the O-ring that goes onto the upper side of the thermostat bypass tube between the thermostat housing and the water pump.

See the wide variety of GM 6.6 Duramax diesel performance, repair, and maintenance parts offered by Huckstorf Diesel both online here, and in person at Wisconsin’s premier diesel repair, performance, and installation center located just outside of Milwaukee Wisconsin in Franklin WI.