Features: 1. Fitment: Compatible with 1994-2007 Ford Powerstroke 6.0L & 7.3L Diesel engines, 1994-2007 International VT365 & T444E Diesel engines, 1997-2006 CAT 3126B, 3126E, and C7 Diesel engines. 2. Function: Air leak test gauge tool kit is dual purpose test tool,Analogue pressure gauges can be used to monitor system performance or test for air leaks. 3. Specification: 6000 PSI liquid-filled gauge; 5800 PSI hydraulic hose; 23200 PSI minimum burst pressure rating. And IPR pigtail, jumper wires, high pressure hose, adapters, etc. (Total 12 pieces) .