Lexus IS Exhaust System: Specs, Fitment & Common Faults
A genuinely useful piece of context: catalytic converter theft has been documented on related models, and Lexus's own recommended CATLOC anti-theft device hasn't always prevented it — worth knowing before assuming this device guarantees protection.
Illustration for editorial purposes
Opens live listings in a new tab.
OEM Part Number: confirm via VIN — Rear silencer (aftermarket) Bosal 148-193 / Walker 22693
| Rear silencer (back box) — aftermarket | Walker 22693 (820 mm); Walker 21993 (820 mm); Walker 17166 (610 mm); Walker 23164 (720 mm); Bosal 148-193 (accessories needed); Vegaz OS-337 (720 mm), PGS-129; MTS 01.60657, 01.95530, 01.97400 |
|---|---|
| Centre / intermediate silencer — aftermarket | Bosal 105-109, 233-577 (accessories needed); Ernst 153003 (810 mm); Walker 28832 (930 mm), 09738 (universal); Vegaz VS-111, TS-320; Izawit 18.022, 18.030; MTS 01.50577 |
| Front pipe / catalytic converter (DPF on diesels) — aftermarket | Vegaz TK-320, TK-336 (Euro 6), AK-833 (Euro 4); Oyodo 10N0193-OYO; NAP CAK10404 (petrol, 1G-FE); Ridex 429C0042 (Euro 5, manifold type); Walker 69002/69003 universal |
| Genuine (OE) numbers quoted | None quoted in catalogue listings — order genuine parts against your VIN |
| Fitment notes | engines: petrol 200t, 250, 300, 350, IS 500; hybrid 300h; no diesel; not engine-specific. |
Lexus IS Exhaust System: The Part That Announces Its Own Problems
On the Lexus IS, 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.
Lexus IS Exhaust System: What It Does
The Lexus IS'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.
Lexus IS Exhaust System: Watch: Replacing It
Previous-generation IS250 (2005-2013), NOT the 2013- XE30 car; weak match, flag
Opens live listings in a new tab.
A Genuinely Useful Piece of Context Worth Knowing About Catalytic Converter Theft — Lexus IS Exhaust System
If you're concerned about catalytic converter theft, this is genuinely worth knowing: while Lexus has officially named certain other models in the range as particular theft targets, IS owners have also documented experiencing this same crime, worth taking sensible preventative measures regardless of whether your specific model has been officially flagged as a top target.
It's also genuinely worth knowing an important point relevant to any insurance claim: the way thieves typically cut a catalytic converter free frequently damages the surrounding rear pipe and downpipe as well, meaning a genuine insurance claim will often need to cover replacement of most of the exhaust system, not just the missing converter itself.
Lexus IS 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 Lexus Exhaust System
The same part, covered across other Lexus models.