AEM X-Series Wideband UEGO AFR Gauge (No Sensor) NDERC Now used in many of

Now used in many of the fastest and most powerful Imprezas across the globe the RCM 14mm Superstud Head Stud Kit is quite simply the foundation on which all our high bhp engine conversions (including Gobstopper and Gobstopper 2) race engines are built around

Protect your truck engine with the technology preferred by heavy duty diesel OEMs

21311AA180

Level switch and diagnostic LED indicator

AEM X-Series Wideband UEGO AFR Gauge (No Sensor) NDERC Now used in many ofX Series Wideband UEGO AFR Controller Gauges were the fastest responding wideband air fuel ratio controllers in an independent test vs. 17 competitor wideband AFR controllers Installation Instructions