Narrowband Air/Fuel Ratio: Lean/Rich - Carbon Fiber Gauge (2 1/16") JE Pistons • Non-Slip Pad to Keep

• Non-Slip Pad to Keep Battery Snug and Reduce Shock

Designed for high RPM and high boost 4G63 Evo

These springs are for serious builds only with a seat pressure of 135lb that can be shimmed up to 150lb

• Hand Blended Transitions to Ensure Proper Flow

Narrowband Air/Fuel Ratio: Lean/Rich - Carbon Fiber Gauge (2 1/16") JE Pistons • Non-Slip Pad to KeepFits these Applications: Universal Product Running too lean while enjoying spirited driving in your vehicle is one of the leading causes of expensive engine damage. AutoMeters Narrowband Air Fuel Gauges pair with older Oxygen Sensors to warn of lean burn conditions under heavy engine load. Connects directly to the factory O2 sensor on many applications, or uses the AutoMeter 2244 Narrowband O2 sensor. Not compatible with 5 wire air fuel sensors.