Change Car Rear Silencer Mercedes-Benz CLA
Change Car Rear Silencer
| Estimated time | 1h30 |
|---|---|
| Estimated labour cost | ~150£ |
| Difficulty | Easy |
| Remove/refit the silencer | 1h30 |
| Renew the silencer | 1h30 |
| Repair the silencer* | 1h30 |
| Repair the front silencer* | 1h30 |
| 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 | 1h30 |
| Renew the rear silencer | 1h30 |
| Repair the rear silencer | 0h30 |
| Weld a sheet-metal repair panel onto the rear silencer* | 0h45 |
| Difficult rear silencer removal* | 0h30 |
| Repair the main silencer* | 1h30 |
| Repair the rear silencer* | 1h30 |
What is a Mercedes-Benz CLA 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 Mercedes-Benz CLA 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 Mercedes-Benz CLA 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.
2 models covered
| Model | Year Range | Engines covered | Fuel |
|---|---|---|---|
| CLA 2013-2019 | 2013-2019 | 180 CDI Diesel (607.951 (K9K)), 180, -LPG LPG,Petrol (270.910), 200 CDI Diesel (651.901), 200 CDI, -4MATIC Diesel (651.930), 200 Petrol (270.910), 220 4MATIC Petrol (270.920), 220 CDI, -4MATIC Diesel (651.930), 220 CDI, -4MATIC Diesel (651.930), 250, -4MATIC Petrol (270.920), 25… | Diesel, LPG, Petrol |
| CLA 2019-2025 | 2019-2025 | 180 CDI Diesel (608.915), 180 D Diesel (654.920), 180 Petrol (282.914), 200 D Diesel (654.920), 200 Petrol (282.914), 220 D Diesel (654.920), 220, 4MATIC 48V (MHEV),Petrol (260.920), 250 e Electricity,Petrol (282.914), 250, 4MATIC 48V (MHEV),Petrol (260.920), AMG 35 Petrol (260.… | 48V (MHEV), Diesel, Electricity, Petrol |
