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Change Car Rear Silencer

Easy 0h45–1h30 ~75–150£
Estimated time 0h45–1h30
Estimated labour cost ~75–150£
Difficulty Easy
Vehicles
Focus Mk I 1998-2009 30
  • 1.4 (Zetec-SE) Petrol (FXDA)
  • 1.4 (Zetec-SE) Petrol (FXDB)
  • 1.4 (Zetec-SE) Petrol (FXDC)
  • 1.4 (Zetec-SE) Petrol (FXDD)
  • 1.6 (Zetec-SE) Petrol (FYDA)
  • 1.6 (Zetec-SE) Petrol (FYDB)
  • 1.6 (Zetec-SE) Petrol (FYDC)
  • 1.6 (Zetec-SE) Petrol (FYDD)
  • 1.6 FFV (Zetec-SE) Bioethanol (E85),Petrol (FYDH)
  • 1.8 (Zetec-E) Petrol (EYDB)
  • 1.8 (Zetec-SE) Petrol (EYDC)
  • 1.8 (Zetec-SE) Petrol (EYDE)
  • 1.8 (Zetec-SE) Petrol (EYDF)
  • 1.8 LPG (Zetec-E) LPG,Petrol (EYDG)
  • 1.8 LPG (Zetec-E) LPG,Petrol (EYDI)
  • 1.8 LPG (Zetec-E) LPG,Petrol (EYDJ)
  • 1.8 LPG (Zetec-E) LPG,Petrol (EYDL)
  • 1.8 LPG (Zetec-SE) LPG,Petrol (EYDD)
  • 1.8 TDCi (Duratorq) Diesel (F9DA)
  • 1.8 TDCi (Duratorq) Diesel (FFDA)
  • 1.8 TDdi (Endura-DI) Diesel (BHDA)
  • 1.8 TDdi (Endura-DI) Diesel (C9DA)
  • 1.8 TDdi (Endura-DI) Diesel (C9DB)
  • 1.8 TDdi (Endura-DI) Diesel (C9DC)
  • 2.0 (Zetec-E) Petrol (EDDD)
  • 2.0 (Zetec-E) Petrol (EDDF)
  • 2.0 (Zetec-SE) Petrol (EDDB)
  • 2.0 (Zetec-SE) Petrol (EDDC)
  • 2.0 Turbo RS (Duratec) Petrol (HMDA)
  • ST170 (Duratec) Petrol (ALDA)
Focus Mk II 2004-2012 37
  • 1.4 (Duratec) Petrol (ASDA)
  • 1.4 (Duratec) Petrol (ASDB)
  • 1.6 (Duratec) Petrol (HWDA)
  • 1.6 (Duratec) Petrol (HWDB)
  • 1.6 (Duratec) Petrol (SHDA)
  • 1.6 (Duratec) Petrol (SHDB)
  • 1.6 (Duratec) Petrol (SHDC)
  • 1.6 TDCi (Duratorq) Diesel (G8DA)
  • 1.6 TDCi (Duratorq) Diesel (G8DB)
  • 1.6 TDCi (Duratorq) Diesel (G8DC)
  • 1.6 TDCi (Duratorq) Diesel (G8DD)
  • 1.6 TDCi (Duratorq) Diesel (G8DE)
  • 1.6 TDCi (Duratorq) Diesel (G8DF)
  • 1.6 TDCi (Duratorq) Diesel (GPDA)
  • 1.6 TDCi (Duratorq) Diesel (GPDC)
  • 1.6 TDCi (Duratorq) Diesel (HHDA)
  • 1.6 TDCi (Duratorq) Diesel (HHDB)
  • 1.6 TDCi (Duratorq) Diesel (MTDA)
  • 1.6 Ti-VCT (Duratec) Petrol (HXDA)
  • 1.6 Ti-VCT (Duratec) Petrol (HXDB)
  • 1.6 Ti-VCT (Duratec), -LPG LPG,Petrol (SIDA)
  • 1.8 HE (Duratec) Petrol (QQDB)
  • 1.8 HE FFV (Duratec) Bioethanol (E85),Petrol (Q7DA)
  • 1.8 TDCi (Duratorq) Diesel (KKDA)
  • 2.0 (Duratec-HE) Petrol (AODA)
  • 2.0 (Duratec-HE) Petrol (AODB)
  • 2.0 (Duratec-HE) Petrol (AODE)
  • 2.0 HE LPG (Duratec) Bioethanol (E85),LPG,Petrol (SYDA)
  • 2.0 TDCi (Duratorq) Diesel (G6DA)
  • 2.0 TDCi (Duratorq) Diesel (G6DB)
  • 2.0 TDCi (Duratorq) Diesel (G6DC)
  • 2.0 TDCi (Duratorq) Diesel (G6DD)
  • 2.0 TDCi (Duratorq) Diesel (G6DG)
  • 2.0 TDCi (Duratorq) Diesel (IXDA)
  • 2.5 RS (Duratec) Petrol (JZDA)
  • 2.5 RS 500 Petrol (JZDA)
  • 2.5 ST (Duratec) Petrol (HYDA)
Focus Mk III 2011-2019 24
  • 1.0 (EcoBoost) Petrol (M1DA)
  • 1.0 (EcoBoost) Petrol (M2DA)
  • 1.0 (EcoBoost) Petrol (SFDA)
  • 1.6 SCTi (EcoBoost) Petrol (JQDA)
  • 1.6 SCTi (EcoBoost) Petrol (JQDB)
  • 1.6 SCTi (EcoBoost) Petrol (JTDA)
  • 1.6 SCTi (EcoBoost) Petrol (JTDB)
  • 1.6 SCTI FFV (EcoBoost) Bioethanol (E85),Petrol (YUDA)
  • 1.6 TDCi (Duratorq) Diesel (NGDA)
  • 1.6 TDCi (Duratorq) Diesel (NGDB)
  • 1.6 TDCi (Duratorq) Diesel (T1DA)
  • 1.6 TDCi (Duratorq) Diesel (T1DB)
  • 1.6 TDCi (Duratorq) Diesel (T3DA)
  • 1.6 TDCi (Duratorq) Diesel (T3DB)
  • 1.6 Ti-VCT (Duratec) Petrol (IQDB)
  • 1.6 Ti-VCT (Duratec) Petrol (PNDA)
  • 1.6 Ti-VCT (Duratec) Petrol (XTDA)
  • 1.6 TI-VCT FFV (Duratec), -LPG Bioethanol (E85),LPG,Petrol (MUDA)
  • 2.0 (Duratec-HE) Petrol (MGDA)
  • 2.0 (EcoBoost) Petrol (R9DA)
  • 2.0 TDCi (Duratorq) Diesel (TXDB)
  • 2.0 TDCi (Duratorq) Diesel (TYDA)
  • 2.0 TDCi (Duratorq) Diesel (UFDB)
  • 2.0 TDCi (Duratorq) Diesel (UKDB)
Focus Mk III 2013-2020 43
  • 1.0 (EcoBoost) Petrol (M1DA)
  • 1.0 (EcoBoost) Petrol (M1DC)
  • 1.0 (EcoBoost) Petrol (M1DD)
  • 1.0 (EcoBoost) Petrol (M1DH)
  • 1.0 (EcoBoost) Petrol (M2DB)
  • 1.0 (EcoBoost) Petrol (M2DC)
  • 1.0 (EcoBoost) Petrol (SFDB)
  • 1.5 (EcoBoost) Petrol (M8DA)
  • 1.5 (EcoBoost) Petrol (M8DB)
  • 1.5 (EcoBoost) Petrol (M8DD)
  • 1.5 (EcoBoost) Petrol (M8DE)
  • 1.5 (EcoBoost) Petrol (M9DA)
  • 1.5 (EcoBoost) Petrol (M9DB)
  • 1.5 (EcoBoost) Petrol (M9DG)
  • 1.5 (EcoBoost) Petrol (M9DH)
  • 1.5 TDCi (Duratorq) Diesel (AEDA)
  • 1.5 TDCi (Duratorq) Diesel (XWDA)
  • 1.5 TDCi (Duratorq) Diesel (XWDB)
  • 1.5 TDCi (Duratorq) Diesel (XWDC)
  • 1.5 TDCi (Duratorq) Diesel (XWDD)
  • 1.5 TDCi (Duratorq) Diesel (XWDE)
  • 1.5 TDCi (Duratorq) Diesel (XXDA)
  • 1.5 TDCi (Duratorq) Diesel (XXDC)
  • 1.5 TDCi (Duratorq) Diesel (XXDD)
  • 1.6 (Duratec) Petrol (IQDC)
  • 1.6 (Duratec) Petrol (PNDC)
  • 1.6 (Duratec) Petrol (PNDD)
  • 1.6 (Duratec) Petrol (PNDE)
  • 1.6 (Duratec) Petrol (XTDB)
  • 1.6 FFV (Duratec) Petrol (MUDD)
  • 1.6 TDCi (Duratorq) Diesel (T1DA)
  • 1.6 TDCi (Duratorq) Diesel (T1DB)
  • 1.6 TDCi (Duratorq) Diesel (T3DA)
  • 1.6 TDCi (Duratorq) Diesel (T3DB)
  • 2.0 ST (EcoBoost) Petrol (R9DA)
  • 2.0 ST (EcoBoost) Petrol (R9DB)
  • 2.0 ST (EcoBoost) Petrol (R9DC)
  • 2.0 ST (EcoBoost) Petrol (R9DD)
  • 2.0 TDCi (Duratorq) Diesel (T7DA)
  • 2.0 TDCi (Duratorq) Diesel (T7DB)
  • 2.0 TDCi (Duratorq) Diesel (T8DA)
  • 2.3 RS (EcoBoost) Petrol (YVDA)
  • 2.3 RS (EcoBoost) Petrol (YVDB)
Focus MK IV 2019-2025 15
  • 1.0 (EcoBoost) Petrol (B3DA)
  • 1.0 (EcoBoost) Petrol (B7DA)
  • 1.0 (EcoBoost) Petrol (SFDC)
  • 1.0 mHEV (EcoBoost) 48V (MHEV),Petrol (B7DC)
  • 1.0 mHEV (EcoBoost) 48V (MHEV),Petrol (M0DC)
  • 1.0 mHEV (EcoBoost) 48V (MHEV),Petrol (R0DB)
  • 1.0 mHEV Flex (EcoBoost) 48V (MHEV),Ethanol (E85),Petrol (R0DA)
  • 1.5 (EcoBlue) Diesel (Y9DA)
  • 1.5 (EcoBlue) Diesel (Z2DA)
  • 1.5 (EcoBlue) Diesel (ZTDA)
  • 1.5 (EcoBoost) Petrol (Y1DA)
  • 1.5 (EcoBoost) Petrol (YZDA)
  • 2.0 TDCi (EcoBlue) Diesel (BCDA)
  • 2.0 TDCi (EcoBlue) Diesel (YLDA)
  • 2.3 ST-3 (EcoBoost) Petrol (N3DA)
Remove/refit the silencer 0h45–1h30
Renew the silencer 0h45–1h30
Repair the silencer* 1h30
Remove/refit the front silencer 0h45–1h30
Renew the front silencer 0h45–1h30
Repair the front silencer 0h30
Align the front silencer 0h30
Repair the main silencer 0h30
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
Difficult rear silencer removal 0h30
Remove/refit the rear silencer trim 0h30
Renew the rear silencer trim 0h30
Remove/refit both rear silencer trims 0h30
Renew both rear silencer trims 0h30
Repair the main silencer* 0h30–1h30
Weld a sheet-metal repair panel onto the rear silencer* 0h30–0h45
Align the front silencer* 0h30
Difficult rear silencer removal* 0h30
Repair the rear silencer* 0h30–1h30
Remove/refit the main silencer 0h45–1h30
Renew the main silencer 0h45–1h30
Repair the front silencer* 1h30
Remove/refit the exhaust pipe bracket 0h45
Renew the exhaust pipe bracket 0h45
Align the main silencer 0h30

What is a Ford Focus 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 Ford Focus 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 Ford Focus 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.

5 models covered

Model Year Range Engines covered Fuel
Focus Mk I 1998-2009 1998-2009 1.4 (Zetec-SE) Petrol (FXDA), 1.4 (Zetec-SE) Petrol (FXDB), 1.4 (Zetec-SE) Petrol (FXDC), 1.4 (Zetec-SE) Petrol (FXDD), 1.6 (Zetec-SE) Petrol (FYDA), 1.6 (Zetec-SE) Petrol (FYDB), 1.6 (Zetec-SE) Petrol (FYDC), 1.6 (Zetec-SE) Petrol (FYDD), 1.6 FFV (Zetec-SE) Bioethanol (E85),Pet… Bioethanol (E85), Diesel, LPG, Petrol
Focus Mk II 2004-2012 2004-2012 1.4 (Duratec) Petrol (ASDA), 1.4 (Duratec) Petrol (ASDB), 1.6 (Duratec) Petrol (HWDA), 1.6 (Duratec) Petrol (HWDB), 1.6 (Duratec) Petrol (SHDA), 1.6 (Duratec) Petrol (SHDB), 1.6 (Duratec) Petrol (SHDC), 1.6 TDCi (Duratorq) Diesel (G8DA), 1.6 TDCi (Duratorq) Diesel (G8DB), 1.6 TD… Bioethanol (E85), Diesel, LPG, Petrol
Focus Mk III 2011-2019 2011-2019 1.0 (EcoBoost) Petrol (M1DA), 1.0 (EcoBoost) Petrol (M2DA), 1.0 (EcoBoost) Petrol (SFDA), 1.6 SCTi (EcoBoost) Petrol (JQDA), 1.6 SCTi (EcoBoost) Petrol (JQDB), 1.6 SCTi (EcoBoost) Petrol (JTDA), 1.6 SCTi (EcoBoost) Petrol (JTDB), 1.6 SCTI FFV (EcoBoost) Bioethanol (E85),Petrol (… Bioethanol (E85), Diesel, LPG, Petrol
Focus Mk III 2013-2020 2013-2020 1.0 (EcoBoost) Petrol (M1DA), 1.0 (EcoBoost) Petrol (M1DC), 1.0 (EcoBoost) Petrol (M1DD), 1.0 (EcoBoost) Petrol (M1DH), 1.0 (EcoBoost) Petrol (M2DB), 1.0 (EcoBoost) Petrol (M2DC), 1.0 (EcoBoost) Petrol (SFDB), 1.5 (EcoBoost) Petrol (M8DA), 1.5 (EcoBoost) Petrol (M8DB), 1.5 (EcoB… Diesel, Electricity, Petrol
Focus MK IV 2019-2025 2019-2025 1.0 (EcoBoost) Petrol (B3DA), 1.0 (EcoBoost) Petrol (B7DA), 1.0 (EcoBoost) Petrol (SFDC), 1.0 mHEV (EcoBoost) 48V (MHEV),Petrol (B7DC), 1.0 mHEV (EcoBoost) 48V (MHEV),Petrol (M0DC), 1.0 mHEV (EcoBoost) 48V (MHEV),Petrol (R0DB), 1.0 mHEV Flex (EcoBoost) 48V (MHEV),Ethanol (E85),P… 48V (MHEV), Diesel, Ethanol (E85), Petrol