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Change Car Rear Silencer

Easy 0h45–2h00 ~75–200£
Estimated time 0h45–2h00
Estimated labour cost ~75–200£
Difficulty Easy
Vehicles
C4 I 2004-2013 15
  • 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 (EP6DT (5FX))
  • 1.6 VTi Petrol (EP6 (5FW))
  • 2.0 180 VTS Petrol (EW10J4S (RFK))
  • 2.0 HDiF Diesel (DW10BTED4 (RHF))
  • 2.0 HDiF Diesel (DW10BTED4 (RHR))
  • 2.0 Petrol (EW10A (RFJ))
  • 2.0 Petrol (EW10J4 (RFN))
C4 II 2010-2018 15
  • 1.2 THP Petrol (EB2DT (HNZ))
  • 1.2 THP Petrol (EB2DTS (HNY))
  • 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 Diesel (DV6C (9HR))
  • 1.6 HDiF Diesel (DV6DTED (9HP))
  • 1.6 THP Petrol (EP6CDT (5FV))
  • 1.6 VTi, LPG LPG,Petrol (EP6C (5FS))
  • 2.0 BlueHDi Diesel (DW10FCD (AHX))
  • 2.0 BlueHDi Diesel (DW10FD (AHR))
  • 2.0 HDiF Diesel (DW10CTED4 (RHE))
  • 2.0 HDiF Diesel (DW10CTED4 (RHH))
C4 III 2020-2025 5
  • 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))
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