💡 OEM Engine Control Module (ECU) – 2003–2004 Audi C5 RS6 4.2 L Bi-Turbo – Part #4D1 907 558 D – Used – Ships from Canada 🇨🇦
Part Number: 4D1 907 558 D
Type: Engine Control Module (ECU) for 4.2 L Bi-Turbo “BCY” engine
Brand: Audi/VW OEM
Made in: Germany
Condition: Pre-owned, excellent—clean housing and connectors; fully bench-tested and confirmed working
📸 Photos show the exact item being sold — what you see is what you’ll receive.
Vehicle: 2003 Audi RS6 (C5)
VIN: WUAPV64B33N905096
Notes: OEM unit removed intact; no water or heat damage; original mounting bracket and harness pins in perfect condition.
Audi C5 RS6 (4.2 L Bi-Turbo “BCY”) model years 2003–2004
May fit other C5‐platform vehicles with identical engine codes—verify part number before purchase
Programming Required: This ECU must be programmed (adapted/coded) to your vehicle’s VIN—dealership or specialized tuner required.
100% genuine OEM module—no aftermarket or remapped units
Plug-and-play fitment once programmed
Buyer is responsible for arranging coding and fitment verification
Ships from Alberta, Canada via Canada Post Expedited Parcel
Free shipping to Canada & the U.S.
Carefully bubble-wrapped & boxed to prevent damage
Local pickup available in Edmonton area (message to arrange)
30-day returns accepted
Buyer pays return shipping unless item is defective or not as described
All ECUs are tested before shipment and security-marked for authenticity
💬 Questions? Need more photos, test reports, or fitment advice? Message me—I’m here to help!