Second Hand Mercedes-Benz V-Class Oil Pump

The V-Class has run across two main generations in the UK: the W639 (sold here as the Viano/Vito-based people carrier, roughly 2004–2014) and the current W447 (2014-onwards, with a facelift around 2019), and these generations use fundamentally different engine families, so an oil pump from a W639 is very unlikely to cross over to a W447. The oil pump is machined to the tolerances of a specific engine block, so the engine code is the critical detail – not the generation badge alone. Confirm directly with the breaker that the donor engine code matches yours before buying.

Trim level makes no difference to the oil pump whatsoever – SE, Sport, and AMG Line V-Class variants share the same mechanical drivetrain components when they carry the same engine code. The oil pump is driven by and machined to the engine, not the interior or exterior specification. Give the breaker your engine code and they can match the part regardless of trim badge.

Yes, diesel and petrol engines are entirely different units with different oil pump designs, so a pump from a diesel V-Class will not fit a petrol-engined one and vice versa. The W447 generation sold in the UK is predominantly diesel (OM651 and later OM654 engine families), but you should not assume your vehicle's engine family without checking the engine code on your V5C or via a VIN check. Always quote the engine code to the breaker so they can pull the correct pump.

The W447 V-Class received a facelift in 2019 which brought engine updates including the transition from the OM651 to the newer OM654 diesel in some variants, meaning pre- and post-facelift cars can carry different engine codes even though they share the same generation nameplate. If your engine code matches the donor vehicle's engine code, fitment is far more likely; if the codes differ across that 2019 boundary, the pumps may not interchange. Confirm the engine code on both vehicles with the breaker before purchasing, as ancillary and mounting details can also vary mid-production.

The single most useful piece of information is your engine code, which you can find on your V5C registration document or by running a VIN check – it will be a letter/number combination such as OM651 or OM654 on the common diesel variants. Give this code to the breaker alongside your registration and they can cross-reference it against the donor vehicle to confirm compatibility. Year and fuel type are helpful supporting details, but the engine code overrides everything else for a mechanical part like an oil pump.

All internal combustion engine variants of the V-Class – both the W639 and W447 generations – require an oil pump as a fundamental engine component, so this is a genuine fitment part across the range. However, the pump design, mounting, and drive arrangement will differ between engine families (for example OM651 versus OM654 diesels), so 'V-Class oil pump' is not a single universal part. Always verify engine code compatibility with the breaker rather than assuming any V-Class pump will suit your vehicle.