Enables technician to test exhaust back pressure through oxygen sensor.
• Oxygen sensor adapters include M12 and M18 threads.
• The special 2-1/4" gauge with rubber protector has two multi-colored bands-idles 2500rpm, with pressure shown in psi and bar.
: California prop 65 - This product contains chemicals known to the state of California to cause cancer, birth defects or other reproductive harm. For more information go to https://www.p65warnings.ca.gov/