This is a Bosch LSU 4.9 industry-standard heated 5-wire EGO sensor. These wideband air fuel ratio sensors are the very latest from Bosch and are used in many top quality tuning devices and also by professional dyno-tuners. Suitabe replacement sensor for the Prosport USA wideband kits.

DPR S14 S15 R33 rear camber arms
Turbo oil feed kit TD05/TD06 EVO 4-9 oil filter housing type - Kinugawa
Motul oil 300V High RPM 0W20 2L
SD Rod End (chromolly, imperial) R/L
Bosch 1000cc injectors set (6) high impedence
Kinugawa Japan CT26 3SGTE SW20 ST185 60-1 upgrade kit 