Change Car Rear Silencer Citroen C4
Change Car Rear Silencer
| Estimated time | 0h45–2h00 |
|---|---|
| Estimated labour cost | ~75–200£ |
| Difficulty | Easy |
| Vehicles |
C4 I 2004-2013 15
C4 II 2010-2018 15
C4 III 2020-2025 5
|
| Remove/refit the silencer | 0h45–2h00 |
| Renew the silencer | 0h45–2h00 |
| Repair the silencer* | 1h30 |
| Remove/refit the front silencer | 1h30 |
| Renew the front silencer | 1h30 |
| Repair the front silencer | 0h30 |
| Align the front silencer* | 0h30 |
| Repair the main silencer* | 1h30 |
| Align the main silencer* | 0h30 |
| Difficult main silencer removal* | 0h30 |
| Remove/refit the rear silencer | 0h45–1h30 |
| Renew the rear silencer | 0h45–1h30 |
| Repair the rear silencer | 0h30 |
| Weld a sheet-metal repair panel onto the rear silencer* | 0h30–0h45 |
| Difficult rear silencer removal* | 0h30 |
| Remove/refit the main silencer bracket | 0h30 |
| Renew the main silencer bracket | 0h30 |
| Remove/refit the rear silencer bracket | 0h30 |
| Renew the rear silencer bracket | 0h30 |
| Repair the main silencer | 0h30 |
| Repair the front silencer* | 1h30 |
| Remove/refit the main silencer | 0h45 |
| Renew the main silencer | 0h45 |
| Repair the rear silencer* | 1h30 |
| Remove/refit the rear left silencer | 1h30 |
| Renew the rear left silencer | 1h30 |
| Weld a sheet-metal repair panel onto the rear silencer | 0h30 |
What is a Citroen C4 rear silencer?
The rear silencer (also called the back box or rear muffler) reduces exhaust noise to an acceptable level. It is located at the end of the exhaust line, after the catalytic converter, particulate filter (if fitted), and sometimes an intermediate silencer.
When should you change the Citroen C4 rear silencer?
No periodic replacement interval is specified. Carry out regular visual inspections for corrosion, holes, and deteriorated mounting rubbers. Signs that replacement is needed: louder exhaust noise, rattling from loose baffles, visible rust holes, exhaust fumes entering the cabin, or failure at the MOT/roadworthiness test.
Is it difficult to change the Citroen C4 rear silencer?
Difficulty level 2/5: technically easy but may require effort if bolts and clamps are rusted. Key steps: raise the vehicle, apply penetrating oil to clamp bolts, remove the clamp connecting the silencer to the intermediate pipe, remove the mounting rubber hangers, fit the new silencer with new gasket/clamp, reattach mounting rubbers, check for leaks with engine running.
3 models covered
| Model | Year Range | Engines covered | Fuel |
|---|---|---|---|
| C4 I 2004-2013 | 2004-2013 | 1.4 Petrol (ET3J4 (KFU)), 1.6 BioFlex Bioethanol (E85),Petrol (TU5JP4 (NFU)), 1.6 HDi Diesel (DV6ATED4 (9HX)), 1.6 HDi Diesel (DV6TED4 (9HV)), 1.6 HDi Diesel (DV6TED4 (9HY)), 1.6 HDi Diesel (DV6TED4 (9HZ)), 1.6 Petrol (TU5JP4 (NFU)), 1.6 THP Petrol (EP6DT (5FT)), 1.6 THP Petrol … | Bioethanol (E85), Diesel, Petrol |
| C4 II 2010-2018 | 2010-2018 | 1.2 THP Petrol (EB2DT (HNZ)), 1.2 THP Petrol (EB2DTS (HNY)), 1.2 THP Petrol (EB2DTSM (HNW)), 1.4 VTi Petrol (EP3C (8FP)), 1.6 8V BlueHDi Diesel (DV6FC (BHX)), 1.6 8V BlueHDi Diesel (DV6FC (BHZ)), 1.6 8V BlueHDi Diesel (DV6FD (BHY)), 1.6 8V HDiF Diesel (DV6C (9HD)), 1.6 8V HDiF D… | Diesel, LPG, Petrol |
| C4 III 2020-2025 | 2020-2025 | 1.2 PureTech 100 Petrol (EB2ADTDB (HNE)), 1.2 PureTech 130 Petrol (EB2ADTS (HNS)), 1.2 PureTech 155 Petrol (EB2ADTX (HNN)), 1.5 BlueHDi 110 Diesel (DV5RCE (YHS)), 1.5 BlueHDi 130 Diesel (DV5RC (YHZ)) | Diesel, Petrol |