Car Parts Guide
EXHAUST SYSTEM Kia Sorento · PARTS GUIDE

Kia Sorento Exhaust System: Specs, Fitment & Common Faults

On the Sorento, if told a blocked DPF is "your driving style," it's genuinely worth knowing the DPF is ECU-managed, not owner-serviceable.

Illustration of a car exhaust system Illustration for editorial purposes
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OEM Part Number: confirm via VIN — Rear silencer (aftermarket) Bosal 165-055 / Walker 22970

Accuracy note: Covers the Kia Sorento (2015-2020) as listed in the UK aftermarket catalogues. Exhaust part numbers depend on engine, fuel, emissions standard (Euro 5 / Euro 6) and body — the catalogue listings below are aftermarket references for this generation and are not engine-filtered, so confirm the fit by your VIN or engine code before ordering. Walker 'code letter' values (52, 62, 91 etc.) must match the system fitted. Genuine numbers are only shown where a listing quotes one.
Rear silencer (back box) — aftermarketBosal 165-055, 169-217, 169-041 (need accessories); Walker 22970 (730 mm, 4.5 kg, no fitting parts); MTS 01.61273 (880 mm), 01.60576 (730 mm); Vegaz KS-132, KS-190, KS-162, MZS-51, KS-148, KS-112; Polmo 47.60, 47.71, 10.41, 47.06; Izawit 36.011, 36.036
Centre / intermediate silencer — aftermarketVegaz only: KS-137IMA (1000 mm), KS-126 (900 mm), KS-156IMA.
Front pipe / catalytic converter (DPF on diesels) — aftermarketBosal 090-244 (Euro 5, with fitting parts); Walker 28685 (480 mm, code letter 91, with manifold); Vegaz KK-910 (front, 610 mm), KK-940/KK-941 (Euro 4), KK-939 (Euro 4/5), HUK-975 (Euro 4/5, with manifold); BM Catalysts BM92005H (Euro 5), BM80482H (Euro 4); JMJ 1090123, 1091613, 1091673, 1091536, 1091678 (G4LA)
Genuine (OE) numbers quotedNone quoted in catalogue listings — order genuine parts against your VIN
Fitment notesRear silencer list is the same generic Kia set. Engines 2.0 GDI to 3.5, 2.0-2.2 CRDi at category level only.

A Genuinely Honest, Real Argument Worth Knowing If Told It's "Your Driving Style" — Kia Sorento Exhaust System

This is genuinely worth knowing if a dealer blames a blocked DPF on your driving style: the DPF itself is not a component you're expected to service — it's a fixed part of the exhaust system, self-managed by the car's ECU. Genuine contamination is typically the result of a fault with an associated component, such as the differential pressure sensor or EGR valve, rather than simply how the car is driven.

A genuinely useful, real technical detail worth knowing about an active regeneration: exhaust temperature typically climbs to around 600-700°C during a regen, the EGR closes to zero, and the process takes roughly 10-15 miles. It's genuinely critical not to switch the engine off while this is happening, since interrupting a regeneration partway through is a well-documented cause of soot blockage.

It's also genuinely worth verifying directly what emissions equipment your specific car actually has, rather than trusting a blanket claim from a dealer — one documented case saw a dealer incorrectly tell a buyer a specific diesel variant had no DPF at all, when it genuinely did.

Kia Sorento Exhaust System: The Part That Announces Its Own Problems

On the Kia Sorento, 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.

Kia Sorento Exhaust System: Watch: Replacing It

🎬 Watch: Exhaust Flex Pipe Replacement - Kia Sorento

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Generation not confirmed from title

Kia Sorento Exhaust System reference plate
Before you buy: exhaust configuration differs significantly by engine size, fuel type and whether your car has a particulate filter. Always confirm against your VIN before ordering.

Kia Sorento Exhaust System: What It Does

The Kia Sorento'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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Kia Sorento 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 Kia Exhaust System

The same part, covered across other Kia models.