Water Pump Bypass Restrictor Fitting
The BRF or Bypass Restrictor Fitting replaces the factory water pump bypass fitting on dual thermostat housing engines. The purpose is to make a larger percentage of the coolant pass through the radiator to help reduce coolant temperatures. Single thermostat housings do not have this issue, but you can have the best of both worlds!
Made in the USA out of 100% stainless steel.