SG Tool Aid 33600 Exhaust Back Pressure Tester

• Test for clogged or obstructed catalytic converters and mufflers
• Fast and easy to use
• Threads into Oxygen Sensor Port
• Gauge measures 2-1/2″ diameter and has dual scale: 15 PSI and 1.00 Kg/Cm2
• Hose is 41″ long

Kit includes 12mm and 18mm adapters to fit most domestic and imported vehicles. No need to tap into exhaust system then reseal holes afterwards. Packed in a vinyl pouch for store display and tool box storage. Complete with instructions.