Prosport 52mm Supreme Wideband Digital Air Fuel Ratio Kit - Amber/White GTR_1999-2002 This kit is engineered specifically

This kit is engineered specifically for the 2008+ Subaru WRX or STI and includes everything needed to replace the restrictive stock air box

This catback isn't as loud as the N1

Durable wrinkle black powdercoat finish

3-Year Warranty

Prosport 52mm Supreme Wideband Digital Air Fuel Ratio Kit - Amber/White GTR_1999-2002 This kit is engineered specificallyPart #: 216CLSDWAAFR4. 9U WO NW Wideband Air Fuel Ratio Gauge 52mm (2 1 16") Amber White display Clear lens when off. 0 5 volt output signal Utilizing the latest Bosch wideband O2 sensor 5 wire heated LSU 4. 9 our gauge now has the widest range 10. 0: 1 to 20. 0: 1 AFR readings on the planet. This is a complete kit that includes everything you need: AFR Premium Series Gauge Bosch 4. 9 5 wire heated O2 sensor Weld in Bung Instructions Wiring