Vauxhall Grandland X Exhaust System: Specs, Fitment & Common Faults
If your Grandland X is diesel-engined, a blocked DPF is worth addressing promptly — here's what genuinely follows if it's ignored.
Illustration for editorial purposes
Opens live listings in a new tab.
OEM Part Number: 9839652080 (diesel DPF / SCR unit) — rear silencer (aftermarket) Bosal 185-475 / Walker 23138
| Rear silencer (back box) — aftermarket | Walker 23138, 22372, 70308, 70338, 23824; Bosal 185-475, 185-233, 185-647, 185-469, 190-363; Polmo 17.266; Izawit 21.047, 21.044, 21.045; Vegaz OS-337 |
|---|---|
| Centre / intermediate silencer — aftermarket | Bosal 200-269, 278-135, 200-825; Vegaz OS-278, IS-110, RS-318; Polmo 21.282; Izawit 21.087, 21.070 |
| Front pipe / catalytic converter (DPF on diesels) — aftermarket | Walker 28925 (480mm), 28735 (465mm), 28964 (555mm), 20067; Vegaz CSCR-005QP/SIC (SCR); BM Catalysts BM91785H, BM80878H, BM92266H; JMJ old-engine codes only (ignore); no Bosal |
| Genuine (OE) numbers quoted | 5852595 (Izawit 21.087 middle); 855184 (Walker 20067); 9839652080 (Citroen/Peugeot OE SDPF/SCR) |
| Fitment notes | rear/middle lists are the same generic Vauxhall set as Crossland X/Adam |
A Genuine Cascading Failure Chain Worth Knowing on Diesel Models — Vauxhall Grandland X 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 Grandland X Exhaust System: The Part That Announces Its Own Problems
On the Vauxhall Grandland X, 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 Grandland X Exhaust System: Watch: Replacing It
Grandland X is built on the PSA EMP2 platform with the 3008 / 308; shows the exhaust hangers and mounting rather than a box swap
Vauxhall Grandland X Exhaust System: What It Does
On the Vauxhall Grandland X, 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.
Opens live listings in a new tab.
Vauxhall Grandland X 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.