Lang Tools TU 24A PB 3-Way Exhaust Back Pressure Tester Kit - Professional Automotive Diagnostic Tool for Mechanics & DIY Enthusiasts | Perfect for Engine Performance Testing & Emissions System Checks

Three way tester allows quicker and more accurate testing of exhaust blockages in catalytic converters & mufflers.

• M68 special gauge has two multi-colored bands for measuring at idle and 2500 RPM.
• The scale ranges are in PSI and bar.
• Boot included on gauge for extra protection.
• Includes a 6 foot for testing from driver seat.
• Can test in three different places: Oxygen Sensor, Exhaust Pipes and Air Injection Systems