Used Mercedes-Benz A-Class Oil Cooler

Yes, oil coolers are fitted to a number of A-Class variants, but not all of them — fitment depends almost entirely on the engine. Turbocharged petrol and diesel engines (for example the 1.5d, 2.0d, and various AMG turbo petrols) are the most likely to carry an oil cooler, as forced-induction engines generate more heat and need the additional cooling. Naturally aspirated variants are less likely to have one fitted as standard, so before searching for a used unit, confirm with a breaker whether your specific engine actually has one by quoting your registration or engine code.

The engine code is the single most important detail you can provide — more useful than the year, trim, or body style. You can find it on your V5C logbook or by running a VIN check, and it will typically be something like OM607, OM651, M270, or M133 depending on your generation and fuel type. Different engines use different oil cooler designs, and even engines that look similar on paper can have different cooling setups, so always give the breaker your exact engine code rather than just saying '1.6 diesel' or '2.0 petrol'.

These are entirely different generations with different engine families and different ancillary layouts, so a W176 oil cooler is very unlikely to fit a W177 even if the fuel type and rough displacement look similar. The W176 ran from 2012 to 2018 (with a facelift in 2015), while the W177 launched in 2018 with revised engines and updated cooling systems. Treat these as separate searches, and confirm part compatibility with the breaker against your registration.

Trim level does not affect oil cooler fitment — the cooler follows the engine code, not the badge on the back of the car. An AMG Line model with a 1.5d engine will use the same oil cooler as an SE with the same engine; the trim differences are cosmetic (interior, wheels, styling packs) and have no bearing on the cooling system. Just confirm your engine code with the breaker and ignore the trim name entirely when searching.

The W176 facelifted in 2015, and while the engine family remained broadly the same across the generation, ancillary and mounting details can change mid-production in ways that are not always well documented. The engine code is your best guide — if the pre- and post-facelift cars share the same engine code, fitment is more likely, but you should confirm with the breaker against your specific registration before buying a used unit.

No — diesel and petrol engines use entirely different oil cooler units, and in the A-Class these engines are not related, so the parts will not interchange. Diesel A-Class variants (such as those running OM607 or OM651 units) have different cooling requirements and different physical connections compared to petrol variants like the M270 or M133. Always specify your fuel type and engine code together when asking a breaker for a quote.