Skoda Superb Exhaust System: Specs, Fitment & Common Faults
On diesel Superbs, a genuine DIY fix — cleaning a gummed-up EGR valve with carb cleaner — resolves many faults before a costly replacement is needed.
Illustration for editorial purposes
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OEM Part Number: confirm via VIN — Rear silencer (aftermarket) Bosal 233-071 / Walker 22070
| Rear silencer (back box) — aftermarket | Walker 22070 / 22079 (960 mm, code 52), 21342 (1070 mm, code 53); Bosal 233-071, 233-589; MTS 01.69790, 01.67690; Vegaz SKS-5, SKS-67IMA, VS-327; Polmo 01.124; Izawit 23.102, 23.091; Asmet 04.093 |
|---|---|
| Centre / intermediate silencer — aftermarket | Bosal 105-111, 233-477, 233-633, 220-015; Walker 21575 (790 mm), 71341 (1000 mm); Ernst 202046, 114172, 153003; MTS 01.59790, 01.80390, 01.59810; Vegaz SKS-30AT, VS-293AT; Polmo 30.233, 01.104, 01.106; Izawit 15.033, 15.009, 18.022, 18.030, 23.034 |
| Front pipe / catalytic converter (DPF on diesels) — aftermarket | or DPF: Walker 28130 (550 mm), 20825 (400 mm), 20191 (500 mm); Vegaz VSCR-008 (Euro 6 SCR), AK-994 (Euro 3), AK-933; BM Catalysts BM31200H (Euro 6), BM91685H (Euro 5), BM90954H (Euro 4); JMJ 1080335 (BGW/BSS/BWW), 1080004; no Bosal |
| Genuine (OE) numbers quoted | None quoted in catalogue listings — order genuine parts against your VIN |
| Fitment notes | Petrol, diesel and 1.4 TSI iV hybrid listed; no per-part mapping |
A Genuine DIY Fix Worth Trying Before Paying for a New EGR Valve — Skoda Superb Exhaust System
If your diesel is running roughly with a check engine light, and an EGR fault is suspected, it's genuinely worth trying a clean before paying for a replacement valve: removing the EGR valve and cleaning it with carb cleaner and a toothbrush to clear accumulated carbon deposits resolves the issue for a meaningful number of owners, and it's a straightforward job most confident DIYers can tackle with basic tools. This won't fix a genuinely failed valve (stuck open, electrically dead, or physically cracked), but a valve that's simply gummed up with carbon build-up — a common outcome of regular short-journey, stop-start driving — often responds well to this simple clean.
Worth knowing directly: a badly blocked DPF is sometimes caused by an underlying EGR fault preventing the car from completing natural regeneration in the first place — treating both together, rather than just cleaning or replacing the DPF alone, gives a genuinely better chance of resolving the fault for good.
Skoda Superb Exhaust System: The Part That Announces Its Own Problems
On the Skoda Superb, 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.
Skoda Superb Exhaust System: Watch: Replacing It
Removal and refitting of the DPF/cat/exhaust module
Skoda Superb Exhaust System: What It Does
The Skoda Superb'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.
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Skoda Superb 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 Skoda Exhaust System
The same part, covered across other Skoda models.