Mercedes-Benz C-Class Fuel Pump: Specs, Fitment & Common Faults

A genuinely important finding: a low fuel pressure fault code can also be triggered by a separate recall covering leaking fuel rails and injectors, completely unrelated to the pump itself — worth checking your VIN before assuming the pump has failed.

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Mercedes-Benz C-Class Fuel Pump: OEM Part Number

Accuracy note: genuinely worth knowing: in-tank fuel pump assemblies for the C-Class often include the fuel level sender as one combined unit rather than a separate part — check whether you need the pump alone or the full assembly before ordering, since prices and part numbers differ significantly.

Mercedes-Benz C-Class Fuel Pump: A Part That Fails at the Worst Possible Moments

On the Mercedes-Benz C-Class, there's rarely a convenient time for this to fail — it tends to strike mid-journey rather than while the car's sitting safely on the drive. Knowing what the early symptoms look like buys valuable time to get ahead of it.

Before you buy: fuel pump specifications vary by engine size and fuel type, and petrol/diesel versions are never interchangeable. Always confirm against your VIN before ordering.

Mercedes-Benz C-Class Fuel Pump: What It Does

The job here is simple in principle — draw fuel from the tank, deliver it to the engine at the right pressure — but the Mercedes-Benz C-Class's fuel pump sits submerged inside the tank, which makes physical access for replacement far more involved than the small part itself implies.

Mercedes-Benz C-Class Fuel Pump: Generations & Engines: Fuel Pump Type

Accuracy note: these are documented patterns by generation and engine family, not a substitute for confirming your exact engine code — always verify against your V5C before ordering, since petrol and diesel pumps are never interchangeable.

W203/W204 (2000–2014), M271/OM651 petrol & diesel	Spans both diesel (in-tank lift pump plus an engine-mounted high-pressure pump) and petrol (in-tank low-pressure pump, plus a separate high-pressure pump if direct-injection) variants — confirm your exact engine before ordering
W204/W205 C63 AMG (2007–2018), 6.2/4.0 V8	Petrol: typically a single in-tank low-pressure pump; some later or higher-output variants may add a separate engine-mounted high-pressure pump for direct injection — confirm your exact engine
W205/W206 (2014–present), M264 petrol & OM654 diesel	Spans both diesel (in-tank lift pump plus an engine-mounted high-pressure pump) and petrol (in-tank low-pressure pump, plus a separate high-pressure pump if direct-injection) variants — confirm your exact engine before ordering

Mercedes-Benz C-Class Fuel Pump reference plate

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A Genuinely Important Finding Worth Knowing Before Replacing This Pump — Mercedes-Benz C-Class Fuel Pump

If a low fuel pressure fault code has appeared, this is genuinely important to know before assuming the fuel pump itself has failed: this exact fault code can also be triggered by a separate, confirmed recall covering leaking fuel rails and injectors, worth checking your specific VIN against the official recall register before replacing any parts, since this recall-related cause is completely unrelated to the pump itself. It's also genuinely worth checking for fuel contamination in the engine oil, which can indicate a deeper underlying issue, before committing to a pump replacement based on the fault code alone.

A genuinely useful finding worth knowing if this pump does need replacing: a worn cam follower, sometimes called a tappet, can specifically prevent the high-pressure fuel pump from maintaining the fuel rail pressure it needs to operate correctly. It's highly recommended to replace this component at the same time as the pump itself, since a worn cam follower left in place can quickly wear out a brand new pump too.

It's genuinely worth knowing that driving with this fault present is possible for a short distance, but the engine may stall unexpectedly or enter a reduced-power mode, which can be dangerous in traffic — worth minimising driving until the problem is properly diagnosed and fixed.

Mercedes-Benz C-Class Fuel Pump: Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Fuel Pump Guide for symptoms to watch for (including the low-pressure vs high-pressure distinction on direct-injection engines), confirming fitment against your VIN, and OE suppliers worth knowing.

More Mercedes-Benz Fuel Pump

The same part, covered across other Mercedes-Benz models.