Mercedes-Benz ML 500 (W164) Engine Replacement - M273 5.5 Engines

Mercedes-Benz ML 500 (W164) Engines for Sale | Engine Finders

If you're looking for a reconditioned Mercedes-Benz ML 500 (W164) engine, a rebuilt M273 unit, or simply a reliable replacement for a worn-out Mercedes-Benz ML 500 (W164) M273 V8 engine, you're in the right place. The W164 M-Class continued the ML 500 badge onto the newer M273 V8, Mercedes-Benz's naturally aspirated flagship petrol engine of the period. Engine Finders matches UK buyers searching for 'M273 engine for sale', 'reconditioned M273 price' or 'Mercedes-Benz ML 500 (W164) 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 500 (W164) Replacement Engines

A replacement M273 engine for the Mercedes-Benz ML 500 (W164) is a significant purchase, so getting the exact code right matters more than the badge on the boot. The M273 is the naturally aspirated V8 that succeeded the M113 across much of the Mercedes-Benz range, including this W164 ML 500. 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 500 (W164) Models & Engine Codes

The Mercedes-Benz ML 500 (W164) uses the M273 (5.5-litre V8, Petrol (naturally aspirated)), fitted to ML 500 (W164) across 2005 to 2011. The same M273 is used in the W221 S 500 of this era; the engine code is shared across both models, though always confirm from your own 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 500 (W164) Engines

Used M273 engines do come up for sale in the UK, generally sourced from donor or written-off Mercedes-Benz ML 500 (W164) 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 M273 unit is often the better value over the life of the car.

Mercedes-Benz ML 500 (W164) Engines in Stock

We work with a UK-wide network of suppliers who carry reconditioned, rebuilt and remanufactured M273 engines for the Mercedes-Benz ML 500 (W164), 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 500 (W164) Engines

Warranty terms for a replacement M273 engine are set individually by the supplier we match you with — typically around 12 months on a reconditioned or remanufactured unit. £3,000 is our approved M273 family reference, the same price used across our CL 500 (C216), S 500 (W221) and SL 500 (R230) pages. Always get the warranty length, what it covers, and the VAT and fitting basis confirmed in writing before you commit.

Mercedes-Benz ML 500 (W164) M273 Engine Problems & What to Check Before Buying

We have not verified catalogue-grade documented issue reports specific to this application; treat general commentary on this era's Mercedes-Benz V8s as background only. We note this as general background for anyone researching a M273 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 500 (W164) M273 Engine

A genuine reconditioned or remanufactured M273 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 M273 engine quote rather than assuming it's covered.