Monitor system performance with the analog gauge or perform an air leak test with the same tool! You do not need to remove the Ipr valve to perform a system air leak test! No adapters needed to screw in place of the Ipr!No fancy diagnostic scan tools needed! For an air leak test, simply supply shop air pressure directly to the head through an available plugged port, and connect 12v to the Ipr valve. Tool comes with directions as well. Priority Express option available at checkout. The item "Cat 3126, B, E, C7 Diesel Hpop Test Tool Kit, High Pressure Oil & Air leak Set" is in sale since Sunday, January 24, 2016. This item is in the category "eBay Motors\Automotive Tools & Supplies\Diagnostic Service Tools\Fuel Pressure Testers". The seller is "crudediesel" and is located in Tampa, Florida. This item can be shipped to United States, Canada.