Change Car Rear Silencer Opel Astra

Change Car Rear Silencer

Easy 0h30–1h30 ~50–150£
Estimated time 0h30–1h30
Estimated labour cost ~50–150£
Difficulty Easy
Repair the silencer* 1h30
Repair the front silencer* 0h30–1h30
Align the front silencer* 0h30
Remove/refit the main silencer 0h45–1h30
Renew the main silencer 0h45–1h30
Repair the main silencer 0h30
Align the main silencer 0h30–0h30
Difficult main silencer removal* 0h30
Remove/refit the rear silencer 0h30–1h30
Renew the rear silencer 0h30–1h30
Repair the rear silencer 0h30–0h45
Weld a sheet-metal repair panel onto the rear silencer* 0h30–0h45
Difficult rear silencer removal 0h30–0h30
Remove/refit the rear silencer trim 0h30–0h30
Renew the rear silencer trim 0h30–0h30
Remove/refit the exhaust pipe bracket 0h30
Renew the exhaust pipe bracket 0h30
Remove/refit the silencer 0h30–1h30
Renew the silencer 0h30–1h30
Weld a sheet-metal repair panel onto the rear silencer 0h30–0h45
Remove/refit the front silencer 1h30–2h00
Renew the front silencer 1h30–2h00
Repair the front silencer 0h30
Align the front silencer 0h30–0h30
Align the main silencer* 0h30
Repair the main silencer* 0h30–1h30
Repair the rear silencer* 0h45–1h30
Difficult rear silencer removal* 0h30–0h30
Remove/refit the rear silencer bracket 0h30–1h30
Renew the rear silencer bracket 0h30–1h30
Renew the centre silencer 0h45–1h30
Remove/refit the centre silencer 0h45–1h30
Remove/refit the centre and rear silencers 1h30
Renew the centre and rear silencers 1h30

What is a Opel Astra 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 Opel Astra 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 Opel Astra 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.

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6 models covered

Model Year Range Engines covered Fuel
Astra F (Classic) 1992-2001 1992-2001 1.4 MPFi Petrol (14SE), 1.4i 16V Petrol (X14XE), 1.4i Petrol (C14NZ), 1.4i Petrol (X14NZ), 1.4S Petrol (14NV), 1.4Si Petrol (C14SE), 1.6i 16V Petrol (X16XEL), 1.6i Petrol (16LZ2), 1.6i Petrol (C16NZ), 1.6i Petrol (X16SZ), 1.6i Petrol (X16SZR), 1.6S Petrol (16SV), 1.6Si Petrol (C… Diesel, Petrol
Astra G (Classic II) 1998-2007 1998-2007 1.2 16V Petrol (Z12XE), 1.4 16V Petrol (X14XE), 1.4 16V Petrol (Z14XE), 1.4 16V Petrol (Z14XEP), 1.6 16V CNG CNG,Petrol (Z16YNG), 1.6 16V Petrol (X16XEL), 1.6 16V Petrol (Z16XEP), 1.6 16V, -LPG LPG,Petrol (Z16XE), 1.6, -LPG LPG,Petrol (Z16SE), 1.6, -LPG Petrol (X16SZR), 1.7 CDTi… CNG, Diesel, LPG, Petrol
Astra H (Classic III) 2004-2012 2004-2012 1.3 CDTi 16V (DPF) Diesel (Z13DTH), 1.4 16V Petrol (Z14XEL), 1.4 16V, -LPG LPG,Petrol (Z14XEP), 1.6 16V Petrol (A16XER (LDE)), 1.6 16V Petrol (Z16LET), 1.6 16V Petrol (Z16XE1), 1.6 16V Petrol (Z16XEP), 1.6 16V, -LPG LPG,Petrol (Z16XER), 1.7 CDTi Diesel (A17DTJ (LPV)), 1.7 CDTi D… Diesel, LPG, Petrol
Astra J 2010-2017 2010-2017 1.3 CDTi Diesel (A13DTE (LSF)), 1.4 16V Turbo Petrol (A14NEL (LUJ)), 1.4 16V Turbo Petrol (B14XER (LDD)), 1.4 16V Turbo, -LPG LPG,Petrol (A14NET (LUJ)), 1.4 16V Turbo, -LPG LPG,Petrol (B14NEL (LUJ)), 1.4 16V Turbo, -LPG LPG,Petrol (B14NET (LUJ)), 1.4 16V, -LPG LPG,Petrol (A14XEL… Diesel, LPG, Petrol
Astra K 2016-2022 2016-2022 1.0 12V Petrol (B10XFT (LE1)), 1.0 12V Petrol (D10XFL (LE1)), 1.0 12V Petrol (D10XFL (LE1+PL5)), 1.2 Turbo Petrol (F12SHL (LIH)), 1.2 Turbo Petrol (F12SHR (LIH)), 1.2 Turbo Petrol (F12SHT (LIH)), 1.3 Turbo Petrol (F14SHT (L3T)), 1.4 16V Petrol (B14XE (LV7)), 1.4 CNG CNG (B14XNT … CNG, Diesel, Petrol
Astra L 2022-2025 2022-2025 1.2T 110 Petrol (EB2ADT (HNP)), 1.2T 130 Petrol (EB2ADTS (HNS)), 1.2T mHEV 48V (MHEV),Petrol (EB2LTDH2 (HPY)), 1.5 CDTi Diesel (DV5RC (YHZ)), GSe (1.6 Turbo Plug-in Hybrid 225) Electricity,Petrol (EP6FADTXHPD (DGY)), Plug-in Hybrid 180 (1.6 Turbo) Electricity,Petrol (EP6FADTXHPE… 48V (MHEV), Diesel, Electricity, Petrol

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