This is the right category if you are looking for car diagnostic tools. Here you will find a variety of oil and fuel pressure gauges, vacuum gauges, compressor pressure gauges for both gasoline and diesel engines, common rail fuel flow gauges, coolant aerometers, and more. If the problem is with your car's electronics, you'll need one of our multimeters, testers or battery testers. A wide range of measuring devices are also available, such as torque wrenches of various sizes, calipers, internal gauges, measuring tapes, gap gauges, thread gauges, etc.