Mann Filter diesel fuel filter WK 842/23 x for Mercedes‑Benz Sprinter with water sensor — OE-fit water separation

The MANN-FILTER WK 842/23 x is a diesel fuel filter cassette with integrated water separation and a water sensor connection designed to protect Mercedes‑Benz Sprinter fuel systems.

This MANN-FILTER fuel filter replacement is engineered to trap particles, separate water from diesel and maintain steady fuel flow for long service intervals. Built from high-efficiency filter media and premium components, the WK 842/23 x matches OE fitment and is compatible with a range of Mercedes‑Benz Sprinter engines that use the water-sensor connection. The result is cleaner fuel delivery, reduced risk of injector damage and dependable operation in varying temperatures.

How does this filter protect my Sprinter's fuel system?

The WK 842/23 x uses multilayer filtration media to capture dust, rust and dirt before contaminants reach injectors or pumps. It also separates nearly all free water from diesel, preventing corrosion and injection faults.

• High-efficiency media captures microscopic particles
• Engineered water separation to protect metal components
• Designed for minimal pressure drop for reliable fuel delivery

Will this fit my Mercedes‑Benz Sprinter and work with the water sensor?

This filter is compatible with select Sprinter models that use the OEM-style water sensor connection and the listed OE numbers. It follows original equipment dimensions and connection points so installation is straightforward when the vehicle requires this cartridge style with a sensor port.

• OE cross-reference compatible with multiple Mercedes‑Benz numbers
• Includes the water sensor connection interface for warning systems
• Direct-replacement form factor for cartridge-style housings

How often should I replace the WK 842/23 x and what conditions affect service life?

Replacement intervals depend on mileage, fuel quality and operating conditions; consult your vehicle manual for manufacturer-recommended service intervals. Heavy contaminants, frequent short trips or poor fuel quality will shorten life, while clean diesel and normal highway use extend it.

• Follow Mercedes‑Benz maintenance schedule for exact intervals
• Inspect after running on questionable fuel or water-contaminated diesel
• Replace sooner if the water sensor indicates contamination

What are the performance advantages compared with generic fuel filters?

MANN-FILTER focuses on filtration efficiency and durable materials to reduce service frequency and safeguard sensitive injection components. The WK 842/23 x is engineered to match OE flow characteristics while delivering superior water separation and particle retention.

• Premium media for higher particle retention than basic aftermarket filters
• Almost-complete fuel/water separation in diesel testing
• Materials selected for stability in extreme temperatures and extended service intervals

Who is this for: The MANN-FILTER WK 842/23 x is aimed at Mercedes‑Benz Sprinter owners, fleet managers and technicians who need a reliable OE-compatible fuel filter with water separation and sensor compatibility. It’s especially useful for vehicles operating in varied climates or where fuel quality is inconsistent and maintaining injector health is a priority.