Quickly tell - from the outside - when your engine needs an overhaul!

This easy-to-use tester checks ring seals, valves, even head gaskets. Don't wait too long to rebuild your motor - but don't do it too soon either!

• Allows the ability to achieve consistent power
• Stretch out the time between costly teardowns
• Rugged design features rubber bumpers to protect the gauges
• Exclusive Longacre gauge manifold meters the airflow for precise readings
• 14 mm plug adapter