Land Rover Discovery Sport Exhaust System: Specs, Fitment & Common Faults
A genuinely alarming, honest account: a professional DPF clean lasted just 20 days and 50 miles before the red warning returned, with the dealer's own report showing specific soot and oil dilution readings — plus a finding that any check engine light present blocks regeneration entirely.
Illustration for editorial purposes
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OEM Part Number: confirm via VIN — Rear silencer (aftermarket) Bosal 211-393 / Walker 22664
| Rear silencer (back box) — aftermarket | Walker 22664 (450 mm, code letter 52, filled); Walker 21915 (970 mm, code 53); Bosal 211-393 / 211-395 / 211-403 (accessories needed); MTS 01.60357 (1000 mm); Vegaz MOS-115 (970 mm) / MOS-116; Polmo 53.12; Izawit 44.001 |
|---|---|
| Centre / intermediate silencer — aftermarket | Vegaz MOS-84 (750/755 mm); Vegaz MOS-159IMA (1075 mm, centre); Vegaz MOS-209 (800 mm) |
| Front pipe / catalytic converter (DPF on diesels) — aftermarket | Bosal 099-758 (Euro 2, generic); BM Catalysts BM80781H (Euro 6, with FK80781); Vegaz MOK-949 (Euro 6); Vegaz MOK-806 (Euro 5); JMJ 1080321 (engine code 448DT); NAP CAK10648 (engine 20T2N, Euro 2) |
| Genuine (OE) numbers quoted | None quoted in catalogue listings — order genuine parts against your VIN |
| Fitment notes | petrol Si4, diesel, MHEV/PHEV but maps no part to an engine; cat list is mostly old Euro 1-4 generic items, only Euro 5/6 ones plausible. |
Land Rover Discovery Sport Exhaust System: The Part That Announces Its Own Problems
On the Land Rover Discovery Sport, most faults are things you'd spot visually first, but this one usually announces itself acoustically — a rattle, a drone, a noticeable jump in noise levels. That's actually helpful, since it means you'll likely notice trouble well before it gets serious.
Land Rover Discovery Sport Exhaust System: What It Does
Three jobs happen inside the Land Rover Discovery Sport's exhaust system: routing burnt gases away from the engine, quieting them through the silencer, and treating emissions via a catalytic converter and particulate filter. Petrol and diesel variants often need completely different systems to meet their respective emissions requirements.
Land Rover Discovery Sport Exhaust System: Watch: Replacing It
Exhaust rattle repair
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A Genuinely Alarming, Honest Real Account Worth Knowing — Land Rover Discovery Sport Exhaust System
If a DPF has just been professionally cleaned, this is genuinely worth knowing before assuming the problem is fully resolved: one documented case saw the red DPF warning light return just 20 days and around 50 miles after a professional clean carried out through the manufacturer's own recovery partner, going straight back into limp home mode. The dealer's own follow-up diagnostic report showed specific soot and oil dilution readings still present, suggesting a clean alone doesn't always address the underlying cause of repeated blockages. It's genuinely worth knowing a professional clean can be only a temporary fix in some cases, worth asking directly what's causing the DPF to block so repeatedly rather than accepting repeated cleans as a long-term solution.
It's also genuinely worth knowing a useful, practical tip for AdBlue-equipped diesels: topping off the diesel exhaust fluid tank every two to three tanks of fuel, rather than waiting for a low-level warning, can help avoid the fluid crystallising inside the tank at very low levels, which has been documented as a genuine cause of related fault codes.
Land Rover Discovery Sport 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 Land Rover Exhaust System
The same part, covered across other Land Rover models.