AEM RTD Exhaust Gas Temperature Sensor Kit twin turbo you should replace both of

you should replace both of these

The new and updated dual-stage boost controller now features a billet aluminum housing and bullet valve technology for ultra-fast boost response with two adjustable boost levels

The front and rear gaskets are different

These do not come with the wire harness or bulbs

AEM RTD Exhaust Gas Temperature Sensor Kit twin turbo you should replace both ofAEM's RTD Type Temperature Sensor (PN 30 2052) is packed with features that deliver consistent measurement and long life. This AEM EGT Sensor features a closed tip design that lasts longer than the previous generation's perforated tip design and the tip is smaller for less intrusion and less restriction. Inconel tubing protects the wiring, which is terminated with a high quality DTM style 2 pin connector. The sensor reads a temperature range of 40 to