Vauxhall Meriva Exhaust System: Specs, Fitment & Common Faults
If your Meriva is diesel-engined, a blocked DPF is worth addressing promptly — here's the genuine cascading failure chain that follows if ignored.
Illustration for editorial purposes
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OEM Part Number: confirm via VIN — Rear silencer (aftermarket) Bosal 185-975 / Walker 22930
| Rear silencer (back box) — aftermarket | Walker 22930 (780mm), 20688 (710mm), 22787, 22786, 22926, 22372; Bosal 185-975, 185-959, 185-969, 185-363, 185-459; Vegaz OS-618, OS-620; Izawit 21.100 (770mm), 21.145, 21.146, 21.197; Hella 8LD 366 031-371/-381; Polmo 17.266 |
|---|---|
| Centre / intermediate silencer — aftermarket | Bosal 200-269, 200-825, 278-135; Vegaz IS-110, OS-278, RS-318; Polmo 21.282; Izawit 21.087, 21.070 |
| Front pipe / catalytic converter (DPF on diesels) — aftermarket | Bosal 090-198, 090-199 (Euro 5/6); Walker 28760 (275mm); Vegaz OK-342, OK-332 (+QP versions); BM Catalysts BM91684H, BM91720H (Euro 6) |
| Genuine (OE) numbers quoted | 5852595 (Izawit 21.087 middle) |
| Fitment notes | rear silencer list is genuinely distinct (Walker 22930 etc.); converter list is generic Euro 5/6 set |
A Genuine Cascading Failure Chain Worth Knowing on Diesel Models — Vauxhall Meriva Exhaust System
If your car has a diesel engine, it's worth understanding what a blocked DPF (Diesel Particulate Filter) can lead to if left unaddressed rather than acted on promptly. A blocked filter doesn't just trigger a dashboard warning — sustained excess backpressure in the exhaust system can force its way back to the turbocharger, causing what's known as "backspin," which can damage the turbo's internal seals. Once those seals fail, oil can leak into the EGR (exhaust gas recirculation) system too, compounding what started as a single, more straightforward fault into a considerably more expensive combined repair.
Vauxhall Meriva Exhaust System: The Part That Announces Its Own Problems
On the Vauxhall Meriva, this is one of the few parts where your ears will catch a problem before your eyes do — a new rattle, a drone, noise that simply wasn't there a week ago. That's a genuine advantage, since it gives you an early warning most other faults don't offer.
Vauxhall Meriva Exhaust System: Watch: Replacing It
Rear exhaust bracket/hanger only, not silencer; weak fit.
Vauxhall Meriva Exhaust System: What It Does
On the Vauxhall Meriva, burnt gases leave the engine through the exhaust system, which quiets them via the silencer and treats emissions through a catalytic converter and particulate filter before anything exits the tailpipe. Petrol and diesel versions frequently use entirely different systems, since their emissions treatment needs aren't the same.
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Vauxhall Meriva Exhaust System: Warning Signs, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Exhaust System Guide for warning signs and fault codes to watch for, confirming fitment against your VIN, and which aftermarket brands are worth trusting.
More Vauxhall Exhaust System
The same part, covered across other Vauxhall models.