Mercedes Sprinter Fuel Filter – Mann & Hummel | NCV3 2.1L OM651 | #6510902952 (2010–2018)

A clogged or degraded fuel filter on a NCV3 Sprinter with the OM651 starves the high-pressure fuel pump of clean, unobstructed flow — causing hard starts, power loss under load, and accelerated injector and pump wear. This is the Mann & Hummel fuel filter for NCV3 Sprinters equipped with the 2.1L OM651 diesel engine, a direct replacement that restores full-flow filtration to protect the common-rail injection system.

What This Part Does

The fuel filter sits in the fuel delivery circuit between the lift pump and the high-pressure pump, removing particulates, rust, and water from the diesel fuel before it reaches the injection system. The OM651's common-rail system operates at pressures where even microscopic contamination causes accelerated injector tip wear and pump damage. The filter also performs water separation, collecting moisture that enters the fuel through condensation or contaminated supply. Replace at the manufacturer's recommended service interval — a restricted filter is a leading cause of high-pressure pump failure on the OM651.

Common Symptoms of a Clogged Fuel Filter

• Hard starting or extended cranking before the engine fires
• Loss of power under load, particularly at highway speeds
• Rough idle or hesitation that worsens as the filter loads up
• Black smoke under acceleration from fuel starvation
• Fuel pressure fault codes from the ECU

When to Replace

Replace at every service interval or whenever fuel system symptoms point to restricted flow. Always replace the fuel filter when servicing the high-pressure pump or injectors.

NCV3 OM651 Specific — VIN Verification Required

This fuel filter is for NCV3 Sprinters equipped with the 2.1L OM651 diesel engine. Always verify your engine code and VIN before ordering. Contact us and we'll confirm fitment before you buy.

Fitment

• 2010–2018 Mercedes-Benz Sprinter 2500 / 3500 – 2.1L OM651 (NCV3/W906)
• 2010–2018 Freightliner Sprinter 2500 / 3500 – 2.1L OM651 (NCV3)

Part Numbers

• Mercedes OEM: 6510902952 / A6510902952 / 651-090-29-52
• Manufacturer: Mann & Hummel — WK820/18 / WK820/8
• SKU: 6510902952