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The Gunson G4055A is a Colortune/Hi-Gauge Adaptor Kit for 10mm applications. It provides accurate readings and allows you to diagnose and maintain your vehicle's engine performance effectively.
Gunson G4055B Colortune/Hi-Gauge Adaptor Kit 12mm is a versatile tool for measuring vacuum pressure and airflow. Its color-coded gauge indicates pressure levels, while the adaptors fit various engine types.