After I installed my Vulcan big line reloction kit and $70. 00 lift pump this afternoon, I got the cooler line and compared it to my original lines and it's not even close to fitting my truck. The only rubber lines mine has is at the air-to-air cooler, nothing rubber around the heat exchanger. I wonder what this line fits because it sure does not look like anything on my truck. When I bought the gauge, it came with a compression union tee for the sending unit but I'm not sure that is a reliable way to put the temp sending unit in the cooler line.