AEM Electronics - The Original Wideband Air/Fuel Ratio Gauge w/Bosch LSU 4.9 Sensor Clevis Bracket - Bolt-On -

Clevis Bracket - Bolt-On - 5/8 in Pin - Aluminum - Natural - Accu-Force Spring Smasher - Pair

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880 in Valves - 345 cc Intake - 117 cc Chamber - 1

25 mm Oversize - Coated - Subaru EJ-Series - Kit

Fire Extinguisher - Dual Chamber - Novec / AFFF - 2

AEM Electronics - The Original Wideband Air/Fuel Ratio Gauge w/Bosch LSU 4.9 Sensor Clevis Bracket - Bolt-On -The Wideband O2 air fuel ratio UEGO gauge is a must if you want to maximize your engine's power and safety. When tuning an engine, accurate air fuel ratio data is critical because running with too rich of an AFR can cause a loss of power, and running a lean AFR can result in serious engine damage. AEM's digital Wideband AFR UEGO gauge can quickly alert you to even a . 1 change in air fuel ratio and provide enough time to shut down an engine before