--When cars use "J Tubes" without heater boxes, the conventional cooling system may become less effective. Installing these kit increases the cooling capacity and ensures that the already heated air is expelled to the rear of the car.
--Universal for type 1 engines that use "J tubes" for use in vehicles like dunebuggies.
--Are used in some industry engines like gas compressor and pumps.
--These bolt to the bottom tin, and seal up to the engine heads.