5WS40421F-T / SW9663607580 / HW9655534080 / SID803A / 5WS40421FT Peugeot 307 2.0 HDI ECU Engine Control Unit.

Product Description

This listing is for a Genuine Peugeot 307 2.0 HDI Engine Control Unit (ECU / ECM) compatible with various 2.0 HDI models using the SID803A management system.
OEM part numbers include 5WS40421F-T, SW9663607580, and HW9655534080.

This ECU controls essential engine operations including fuel injection, turbo management, and emissions performance. It has been fully tested and is in excellent working condition.
Please note: coding, programming, or immobilizer pairing may be required depending on your vehicle setup.

Ideal replacement if your vehicle is experiencing non-start, limp mode, injector faults, or ECU-related diagnostic errors.

Compatibility Table

Make	Model	Engine	Year Range	ECU Type	OEM Numbers
Peugeot	307	2.0 HDI (DW10)	2004–2008	SID803A	5WS40421F-T / SW9663607580 / HW9655534080
Peugeot	407	2.0 HDI (DW10)	2004–2009	SID803A	Same as above
Peugeot	308 (early)	2.0 HDI (DW10)	2007–2010	SID803A	Same as above
Citroën	C4	2.0 HDI	2004–2010	SID803A	Same as above
Citroën	C5	2.0 HDI	2004–2008	SID803A	Same as above

(Compatibility based on engine type and ECU series; always verify with part number before purchase.)

Peugeot 307 2.0 HDI ECU
SID803A engine control unit
5WS40421F-T ECU
SW9663607580 ECU
HW9655534080 Peugeot ECM
Peugeot 307 ECU replacement
Bosch SID803A control module
Peugeot diesel engine ECU
Peugeot HDI ECU unit
2.0 HDI engine computer

Compatibility Table

Make	Model	Engine	Year Range	ECU Type	OEM Numbers
Peugeot	307	2.0 HDI (DW10)	2004–2008	SID803A	5WS40421F-T / SW9663607580 / HW9655534080
Peugeot	407	2.0 HDI (DW10)	2004–2009	SID803A	Same as above
Peugeot	308 (early)	2.0 HDI (DW10)	2007–2010	SID803A	Same as above
Citroën	C4	2.0 HDI	2004–2010	SID803A	Same as above
Citroën	C5	2.0 HDI	2004–2008	SID803A	Same as above

(Compatibility based on engine type and ECU series; always verify with part number before purchase.)

Peugeot 307 2.0 HDI ECU
SID803A engine control unit
5WS40421F-T ECU
SW9663607580 ECU
HW9655534080 Peugeot ECM
Peugeot 307 ECU replacement
Bosch SID803A control module
Peugeot diesel engine ECU
Peugeot HDI ECU unit
2.0 HDI engine computer

Shipping, returns and warranty

Worldwide shipping with tracking
30-day returns on unused, uninstalled parts
90-day limited warranty against defects

Send us your VIN and we confirm fitment before shipping. See our shipping policy and return policy.

Citroën C4 2.0 HDI 2004–2010

5WS40421F-T Peugeot 307 HDI Engine Control Unit SID803A OEM SW9663607580 ECU SID803A – Bosch