The factory injectors found in the Audi S3, Audi TTS, VW Golf ED30, VW Golf ED35, VW Golf Pirelli, VW Golf R & VW Scirocco R, Seat Leon Cupra & Seat Leon Cupra R K04 based vehicle are the largest Bosch HDEV 1 gasoline direct injection injectors currently available for the VAG 2.0T FSI EA113 engine platform. Capable of supporting over 500 HP in extreme applications, these gasoline direct injection injectors feature the proper spray pattern designed to support reliable operation in all normal conditions. These injectors are approximately 13% larger than the standard injectors supplied on K03 based vehicles and are required for any APR 2.0T FSI K04 customer sourcing injectors for the kit. OEM Part Number: 06F 906 036 F OEM Direct Replacement (Engine Codes): BHZ, BWJ, BYD, BZC, CDL, CDM, CRZ OEM Compatible Upgrade (Engine Codes): AAX, BGB, BPG, BPJ, BPY, BUL, BWA, BWE, BWT, BYK Please note specific ECU software is required to run these injectors on engines not originally equipped with these injectors. If you have any doubt if these injectors are correct for your vehicle, or any APR turbocharger system, please contact an APR representative.