Toyota RAV4 Exhaust System: Specs, Fitment & Common Faults
On the RAV4, if diesel, attempting a motorway "regen" while the engine management light is already on is often genuinely futile.
Illustration for editorial purposes
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OEM Part Number: 1746074080 (catalytic converter, quoted against Walker 20527) — rear silencer (aftermarket) Bosal 228-001 / MTS 01.96420
| Rear silencer (back box) — aftermarket | Bosal 228-001, 228-407, 228-185, 228-477, 228-063; Asmet 20.036, 20.021, 20.029; MTS 01.96420, 01.60714, 01.61199; Vegaz TS-493; Polmo 26.08, 26.02, 26.177; Izawit 35.013, 35.025 (no Walker) |
|---|---|
| Centre / intermediate silencer — aftermarket | Bosal 228-251; Walker 23695 (1100mm), 22017, 22418, 22018; Vegaz TS-232, TS-278, TS-235; Polmo 26.19/26.22/26.280; Izawit 35.043, 35.001 |
| Front pipe / catalytic converter (DPF on diesels) — aftermarket | Walker 20527 (714mm, "for OE 1746074080"), 20763 (470mm); Vegaz TK-303 (Euro 4/5), TK-880 (460mm, Euro 4/5), TK-866; BM Catalysts BM92128H (Euro 5, FK92128), BM91303H, BM91498H (Euro 4); JMJ 1091649, 1091303, 1091682 (AZ-FE codes, petrol) (no Bosal) |
| Genuine (OE) numbers quoted | 1746074080 (Walker 20527 converter, Toyota 17460-74080) |
| Fitment notes | petrol/diesel/hybrid not split per part; JMJ codes are old petrol AZ engines; verify. |
A Genuinely Important Point Worth Knowing Before Attempting a Motorway "Regen" — Toyota RAV4 Exhaust System
If your diesel's engine management light has already illuminated, this is genuinely important to know before spending time and fuel on a hard motorway run: a proper regeneration cycle generally can't occur while the engine management light is on, since it indicates an underlying fault the ECU needs resolved first. Attempting to "drive it out" at this stage is often genuinely futile — the fault causing the light needs diagnosing and fixing before regeneration can succeed.
It's also worth knowing that a recurring EGR-related fault code that returns despite cleaning points toward the valve needing replacement rather than further cleaning.
Toyota RAV4 Exhaust System: The Part That Announces Its Own Problems
On the Toyota RAV4, 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.
Toyota RAV4 Exhaust System: Watch: Replacing It
muffler replacement on the XA30
Toyota RAV4 Exhaust System: What It Does
The Toyota RAV4'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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Toyota RAV4 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 Toyota Exhaust System
The same part, covered across other Toyota models.