Original Blaupunkt RD4 N1 MP3 car radio – 03 for Citroën/Peugeot (used). Ideal replacement for a non-functional unit in PSA models with on-board CAN network. Thanks to the OEM design, you will maintain full integration with the vehicle – controls on the steering wheel, displays on the on-board display, parking sensors and a hands-free/USB box (if it is in the car). Often searched under part numbers 9666403077, 6579FG, 6579PC.

Main advantages
– Original PSA/Blaupunkt part – no compromises in compatibility and sound
– CD/MP3 and RDS support, control on the steering wheel and display on the OEM display
– Full integration with BSI; possibility to set functions (parking sensors, amplifier, AUX/USB) by diagnostics
– Exact replacement for cars with RD4 – just adapt correctly (add to car)

Compatibility
– Citroën: C4 (I), other selected models with RD4 (e.g. C2, C3, C5 II, Berlingo B9) – always check against the OEM code
– Peugeot: 307 II (facelift), further cars with RD4 (e.g. 207, 308 I, 407, Partner B9) – always check against the OEM code
– Vehicle network: CAN (RD4)
– Physical compatibility: rear 1× Quadlock connector + 1× antenna connector (Fakra)
Tip: The surest verification is to compare the OEM numbers 9666403077, 6579FG, 6579PC and the connectors/old unit match.

Technical information
– Manufacturer/type: Blaupunkt RD4 N1 MP3 – 03
– Features: CD player with MP3 support, FM/AM tuner with RDS
– Power: approx. 4×15–20 W RMS (OEM standard)
– Communication: CAN-BUS, pairing via VIN (no PIN code)
– Connectivity: 1× Quadlock (power supply, speakers, CAN), 1× Fakra antenna
– Integration: OEM on-board display, control on the steering wheel; optional external amplifier (JBL) – set by diagnostics
– Part numbers (for search): 9666403077, 6579FG, 6579PC, RD4 N1 MP3

Important for assembly and coding
– The unit must be “added” to the car with diagnostics (e.g. Diagbox/Lexia/PP2000). Without VIN pairing, the radio will emit a warning tone (beep).
– As part of telecoding, set: body type, presence of parking sensors, external amplifier (JBL), AUX/USB, hands-free, etc.
– Recommended professional assembly and inspection of the condition of the connectors/installation in the car.

Package contents and condition
– Supplied as a bare RD4 car radio unit (without display, frame, steering wheel control, antenna or wiring).
– Used original part – see photos/specific condition. Compare with your old unit and OEM numbers before purchasing.

Search keywords
RD4 N1 MP3 Car Radio, Blaupunkt, 9666403077, 6579FG, 6579PC, Citroën C4, Peugeot 307 II, PSA OEM Car Radio, CD MP3, Quadlock, Fakra, CAN, Telecoding, VIN Matching.