BMW X5 Exhaust System: Specs, Fitment & Common Faults
On the X5, related engines can genuinely automatically sense when a regen is needed and raise the exhaust temperature themselves.
Illustration for editorial purposes
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OEM Part Number: confirm via VIN — Rear silencer (aftermarket) Bosal 247-413 / Walker 05924
| Rear silencer (back box) — aftermarket | Bosal 247-413, 247-981, 247-037 (need accessories); Walker 05924 (1170 mm, 6.31 kg, code 53, filled); Ernst 251006; MTS 01.60519 (580 mm); Vegaz BS-451 (999 mm), BS-83, BS-85, BS-380 (580 mm), BS-223EBER (990 mm), BS-260EBER (975 mm), BS-154IMA (1130 mm), BS-462EBER; Polmo 03.67, 03.07 (without cat), 03.28 |
|---|---|
| Centre / intermediate silencer — aftermarket | No Bosal/Walker/MTS; Vegaz BS-134, BS-140, BS-136, BS-294IMA (950 mm), BS-295EBER; Polmo 03.51, 03.63, 03.65, 03.123; Ernst 275002/275040 (750 mm repair solutions); 4MAX 0219-01-00318P (rear, 1160 mm) |
| Front pipe / catalytic converter (DPF on diesels) — aftermarket | or DPF: Vegaz BK-894 (Euro 6), BK-888 (from Euro 5), BK-804/BK-803 (right/left, Euro 4), BK-983, BK-982 (Euro 3, older); BM Catalysts BM92223H (Euro 6, FK92223), BM91351H/BM91455H (Euro 3, non-approved); Walker 28690 (695 mm, code 91, with fitting parts), 28327 (550 mm, with manifold, code 91); JMJ 1090986 (550 mm, engine M54 - old); AS 45232 (760 mm, OBD), 45233 (550 mm). |
| Genuine (OE) numbers quoted | None quoted in catalogue listings — order genuine parts against your VIN |
| Fitment notes | F15 engines not mapped per part. |
BMW X5 Exhaust System: The Part That Announces Its Own Problems
On the BMW X5, you'll typically hear this fault developing long before you'd ever see it — a new rattle, an odd drone, noise levels creeping up from one week to the next. That early audible warning is a genuine head start on catching the problem before it worsens.
BMW X5 Exhaust System: What It Does
The BMW X5's exhaust does more than just carry gases away from the engine — it also handles noise reduction through the silencer and emissions treatment via a catalytic converter and particulate filter. That's why petrol and diesel versions can use entirely different systems.
BMW X5 Exhaust System: Watch: Replacing It
F15 rear muffler swap.
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A Genuinely Useful Piece of Context Worth Knowing About DPF Regeneration — BMW X5 Exhaust System
If you're worried about the DPF on this diesel, this is genuinely useful to know: related BMW engines can genuinely sense when the DPF needs to regenerate and will automatically raise the exhaust temperature during normal driving, without needing sport mode manually selected.
It's also genuinely worth knowing that if your regular driving is mostly short journeys, giving the car a proper, sustained run at higher revs for around 20 to 30 minutes every six to eight weeks can help ensure the DPF gets a genuine opportunity to regenerate fully.
BMW X5 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 BMW Exhaust System
The same part, covered across other BMW models.