CTA Tools 3420 Fuel Injection Pressure Tester-Bosch K Jetronic C.I.S. is designed to detect bad fuel pumps, bad pressure regulators, leaking injectors and clogged fuel filters. It includes a 3.5-Inch (90-millimeter) gauge with dual calibration (5-145-PSI / 25-1,000-kPa), hose assembly and metal adapters. Heavy-duty construction allows for strength and durability. Whether tuning up your ‘68 Corvette or changing the oil on a John Deere tractor, CTA can supply you with the tools needed to do the job. California Prop 65 - Warning, This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.