Jaguar XF Exhaust System: Specs, Fitment & Common Faults
A genuinely alarming, real account: a £45,000 XF owner had the DPF warning come on fifteen times, with the manufacturer directly blaming his driving style — despite him having speeding points and never being told to drive a particular way.
Illustration for editorial purposes
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OEM Part Number: confirm via VIN — Rear silencer (aftermarket) Bosal 148-193 / Walker 17166
| Rear silencer (back box) — aftermarket | Bosal 148-193 (needs accessories); Walker 17166 (610 mm), 23164 (720 mm); MTS 01.96070 (1020 mm), 01.95480 (860 mm), 01.93730 (950 mm), 01.97400 (800 mm), 01.65280 (800 mm), 01.60802 (1120 mm); Vegaz JS-42, JS-37, JS-38, JS-33, JS-43, OS-337; Izawit 21.047; Asmet 16.085 (sport pipe) |
|---|---|
| Centre / intermediate silencer — aftermarket | Bosal 105-109, 233-577; Ernst 153003 (810 mm), 177092 (800 mm); MTS 01.50577 (890 mm), 01.51350, 01.59790; Walker 21575 (790 mm), 28832 (930 mm); Vegaz VS-111, VS-156, VS-244AT, VS-293AT; Polmo 01.104, 30.233; Izawit 07.072, 16.009, 18.022, 18.030, 23.034 |
| Front pipe / catalytic converter (DPF on diesels) — aftermarket | no Bosal/Walker; Vegaz JK-819 (left)/JK-820 (right) Euro 2/3; BM Catalysts BM80174H, BM91219H, BM90529H, BM91480H, BM91170H (Euro 4); JMJ 1090002, 1080081, 1091391, 1091544; Ridex 429C0042 (Euro 5). |
| Genuine (OE) numbers quoted | None quoted in catalogue listings — order genuine parts against your VIN |
| Fitment notes | Left-rear Vegaz parts suggest twin-exit variants. |
Jaguar XF Exhaust System: The Part That Announces Its Own Problems
On the Jaguar XF, 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.
Jaguar XF Exhaust System: What It Does
Three jobs happen inside the Jaguar XF'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.
Jaguar XF Exhaust System: Watch: Replacing It
XF X260 shares the XE platform; X260 search NOT run (budget ran out)
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A Genuinely Alarming, Real Account Worth Knowing — Jaguar XF Exhaust System
If a dealer suggests a recurring DPF fault is down to your driving style, this is genuinely worth knowing: one widely reported case saw an owner's DPF warning light illuminate fifteen separate times since purchase, with the manufacturer's explanation being that this was a driving style issue, blaming the car mostly covering short journeys. The owner reasonably pointed out he had never been told he needed to drive in any particular way, and had a history of speeding points, considering himself a naturally fast driver rather than someone driving unusually gently. It's genuinely worth knowing this kind of driving-style explanation has been directly disputed by at least one owner in a well-documented case, worth pushing for a more thorough technical explanation if you're told something similar.
It's also genuinely worth knowing an important, general point about diesel engines from this era: Euro 6 diesel engines, from around 2016 onward, have been documented as genuinely less well suited to consistently short journeys, since the DPF needs sustained higher engine speeds periodically to properly regenerate and clear itself — worth factoring this into your driving pattern if your journeys are mostly short and local.
Jaguar XF 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 Jaguar Exhaust System
The same part, covered across other Jaguar models.