Mercedes-Benz ML 320 CDI Engine Replacement - OM642 3.0 Engines

Mercedes-Benz ML 320 CDI Engines for Sale | Engine Finders

If you're looking for a reconditioned Mercedes-Benz ML 320 CDI engine, a rebuilt OM642 unit, or simply a reliable replacement for a worn-out Mercedes-Benz ML 320 CDI OM642 V6 diesel engine, you're in the right place. The W164 M-Class moved from the previous generation's unusual five-cylinder diesel to the mainstream OM642 V6, the same engine used across much of the rest of the Mercedes-Benz range of this era. Engine Finders matches UK buyers searching for 'OM642 engine for sale', 'reconditioned OM642 price' or 'Mercedes-Benz ML 320 CDI engine replacement cost' with vetted suppliers who carry the correct unit for your exact car — supply-only or supply-and-fit, used or professionally reconditioned, whichever suits your budget and timeline.

Mercedes-Benz ML 320 CDI Replacement Engines

A replacement OM642 engine for the Mercedes-Benz ML 320 CDI is a significant purchase, so getting the exact code right matters more than the badge on the boot. The OM642 is a 3.0-litre V6 diesel used widely across the Mercedes-Benz range of this era, replacing the five-cylinder OM612 used in the previous W163 generation. Whether you call it a rebuilt engine, a remanufactured unit, or a reconditioned replacement, the work involved is broadly the same: a full strip-down, inspection against factory tolerances, replacement of wear parts, and bench testing before it's fitted or dispatched to you.

ML 320 CDI Models & Engine Codes

The Mercedes-Benz ML 320 CDI uses the OM642 (3.0-litre V6, Diesel), fitted to ML 320 CDI (W164) across 2005 to 2011. The same OM642 family, at a different tune, powers the ML 350 CDI of this generation — confirm the exact output rating from your engine number. Before ordering any used, reconditioned or rebuilt unit, confirm this code from your V5C or the number stamped on the engine block itself — the same badge can sometimes cover more than one engine across a model's production run, and getting this step right avoids an expensive mismatch.

Buy Used and Second-Hand Mercedes-Benz ML 320 CDI Engines

Used OM642 engines do come up for sale in the UK, generally sourced from donor or written-off Mercedes-Benz ML 320 CDI cars. A used engine can look like the cheaper option at first glance, but once you've accounted for inspection, gaskets, ancillaries and the lack of a meaningful warranty, a professionally reconditioned or remanufactured OM642 unit is often the better value over the life of the car.

Mercedes-Benz ML 320 CDI Engines in Stock

We work with a UK-wide network of suppliers who carry reconditioned, rebuilt and remanufactured OM642 engines for the Mercedes-Benz ML 320 CDI, along with used units where buyers prefer that route. Give us your registration and we'll confirm current stock, typical lead times, and whether supply-only or supply-and-fit makes more sense for your situation.

Warranty for Replacement Mercedes-Benz ML 320 CDI Engines

Warranty terms for a replacement OM642 engine are set individually by the supplier we match you with — typically around 12 months on a reconditioned or remanufactured unit. £5,000 is our approved OM642 price, the same reference used across our E-Class, S-Class and GLE/GLS OM642-equipped pages. Always get the warranty length, what it covers, and the VAT and fitting basis confirmed in writing before you commit.

Mercedes-Benz ML 320 CDI OM642 Engine Problems & What to Check Before Buying

We have not verified catalogue-grade documented issue reports specific to this ML application; treat general commentary on this widely used engine as background only. We note this as general background for anyone researching a OM642 replacement, not as a confirmed finding for any specific car — ask your supplier what inspection was carried out on the unit you're being quoted, and whether known wear points for this engine family were addressed during the rebuild.

What's Included in a Reconditioned Mercedes-Benz ML 320 CDI OM642 Engine

A genuine reconditioned or remanufactured OM642 unit should include a full strip, clean and inspection against factory tolerances, replacement of gaskets, seals and wear items, and a bench test before it leaves the workshop. What's not always included — ancillaries like the turbo, injectors or auxiliary belt components, and whether the price is supply-only or supply-and-fit — varies by supplier, so ask for this in writing alongside your OM642 engine quote rather than assuming it's covered.