Found this glass in line coolant filter on the web the other day, got it in and installed it in less than 5 min with hardly any loss of coolant, it reduces coolant flow and pressure to the heater core hopefully extending the life of the core. Being see through is nice as you can see any possible contamination that may come up, oil, scaling, corrosion, etc. Easy to disassemble for inspection and cleaning. I took a long test drive down to Miami and back (200 miles) and i noticed that my temp gauge was running a constant 1/2 needle width or more cooler than normal at different speeds (50 to 85 mph) and at WOT going through the gears from a stop light. I like, $36. 00, i like more. check it out, ve-labs.com here are some pics.