Honda Civic Exhaust System: Specs, Fitment & Common Faults
On the Civic, if diesel, a genuinely serious real case saw £3,000 spent across four repair attempts, with the car remaining in limp mode throughout.
Illustration for editorial purposes
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OEM Part Number: confirm via VIN — Rear silencer (aftermarket) Bosal 163-203 / Walker 22211
| Rear silencer (back box) — aftermarket | Bosal 163-203 (accessories required); Walker 22211 (1040 mm); Vegaz HOS-181 (800 mm); MTS 01.62360 (1080 mm); Asmet 13.017 (3-door) |
|---|---|
| Centre / intermediate silencer — aftermarket | Polmo 09.17; Izawit 30.002 (resonator, "front" position). |
| Front pipe / catalytic converter (DPF on diesels) — aftermarket | Vegaz HOK-943 (1040 mm, Euro 3/4, OBD); JMJ 1091159 (D14Z6/D16V1 - older engine codes); JMJ 1091541 (R18A1/R18A2); JMJ 1090771 (D14A2-A5/D16Y); BM Catalysts BM92118H (Euro 6, with FK92118); BM91159H (Euro 4, non-approved). Cat refs look mis-filed (older engines). |
| Genuine (OE) numbers quoted | None quoted in catalogue listings — order genuine parts against your VIN |
| Fitment notes | Izawit 30.007 shown with 1998-2002 years - wrong generation. |
A Genuinely Serious, Real Case Worth Knowing About — Honda Civic Exhaust System
This is genuinely worth knowing before assuming a DPF fault will resolve with a single repair attempt: one documented case on a related model saw a persistent blocked DPF warning survive four separate attempts at resolution — two forced regenerations, a professional clean, and finally a complete DPF filter and sensor replacement using new genuine parts. Despite around £3,000 spent, the car remained stuck in limp mode throughout, and no error code was ever actually found to explain the fault.
It's also worth knowing that regular use of a fuel additive alongside premium diesel, combined with genuinely sustained motorway-speed driving occasionally, is a real, practical way to help reduce DPF issues on this platform.
Honda Civic Exhaust System: The Part That Announces Its Own Problems
On the Honda Civic, sound is usually the first clue here, ahead of any visual sign — a rattle, a drone, noise that's crept in gradually or arrived overnight. It's one of the more forgiving faults in that sense, since your ears will likely flag it before it becomes a bigger problem.
Honda Civic Exhaust System: Watch: Replacing It
9th gen exhaust repair; alt https://www.youtube.com/watch?v=bvrNALpRVLU (generic Civic back box swap)
Honda Civic Exhaust System: What It Does
The Honda Civic's exhaust system handles three things at once: clearing burnt gases from the engine, cutting noise via the silencer, and treating emissions through a catalytic converter and particulate filter. Because petrol and diesel emissions requirements differ, it often uses genuinely different exhaust systems depending on engine type.
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Honda Civic 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 Honda Exhaust System
The same part, covered across other Honda models.