Air Filter Restriction Gauge

An air filter restriction gauge prevents engine performance loss by allowing you to monitor the condition (clogging) of an air filter.

This gauge mounts directly on the air intake system. It maintains the highest reading until it is reset — which enables the gauge to be monitored whether the engine is running or not.
This allows the user to get the maximum life of an air filter without wasting fuel.

Includes: gauge, 90 degree brass 1/8" NPT fitting, service decal, installation instructions.

• Helps maintain engine performance and efficiency
• Maintains highest value - can be read even with the engine off
• Gives users a visual indicator of air filter condition
• Replaces SP3539, and GMC 25095863; Fleetguard 3304584S