Original MANN-FILTER Fuel filter WK 939/7 – For Passenger Cars

MANN‑FILTER Fuel Filter WK 939/7

The MANN‑FILTER Fuel Filter WK 939/7 is a high‑performance component designed specifically for passenger cars that require reliable protection against contaminants in the fuel system. This filter delivers exceptional filtration efficiency, ensuring that only clean, debris‑free fuel reaches the engine’s injection or carburetion system.

Key Features and Benefits

• Advanced Filtration Technology: Utilises a multi‑layer media structure that captures particles as small as 0.5 µm, preventing wear on fuel injectors, pumps, and other critical components.
• High Flow Capacity: Engineered to maintain optimal fuel flow rates even under demanding operating conditions, reducing the risk of pressure drop and ensuring consistent engine performance.
• Durable Construction: Made from robust materials that resist cracking, swelling, or degradation when exposed to a wide range of fuels, including gasoline, diesel, and ethanol blends.
• Easy Installation: Designed with a standard mounting interface compatible with most passenger car models. The filter can be installed without special tools, saving time during maintenance.
• Long Service Life: Built to last through extensive mileage, reducing the frequency of replacements and lowering overall maintenance costs.

Compatibility Overview

The WK 939/7 filter is engineered for a broad spectrum of passenger vehicles. It matches the specifications required by many European car manufacturers, including:

• Renault models such as the Clio II (BB0/1/2_, CB0/1/2_), Kangoo I and Express variants.
• Nissan vehicles equipped with the 1.5 dCi engine, ensuring optimal fuel delivery for efficient combustion.
• Other passenger cars that share similar fuel system architecture and filter dimensions.

Because of its standardized size and mounting design, the WK 939/7 can be swapped into many vehicles with minimal adaptation. Always verify compatibility with your vehicle’s service manual before installation.

Installation Procedure

1. Preparation: Park the vehicle on a level surface, engage the parking brake, and disconnect the battery to prevent accidental engine start.
2. Locate the Existing Filter: The fuel filter is typically positioned along the fuel line between the tank and the engine. Refer to your vehicle’s diagram for exact location.
3. Drain Residual Fuel (Optional): For safety, you may drain a small amount of fuel from the line using a suitable container.
4. Remove Old Filter: Loosen the mounting clamps or bolts that secure the filter. Carefully detach the old filter and allow any remaining fuel to drip into the container.
5. Install WK 939/7: Place the new filter in the same orientation as the previous one, ensuring that the flow direction arrow points toward the engine. Secure it with clamps or bolts until snug but not over‑tightened.
6. Reconnect Fuel Lines: Reattach any hoses or fittings that were removed during removal. Check for leaks by inspecting the connections after a short test run.
7. Re‑connect Battery and Test: Restore the battery connection, start the engine, and observe for proper operation. Verify that there are no abnormal noises or warning lights related to fuel pressure.

Maintenance Tips

• Inspect the filter periodically for signs of clogging or damage, especially if your vehicle operates in dusty or dirty environments.
• Replace the filter at recommended intervals based on mileage or operating conditions to maintain optimal fuel system health.
• Avoid using incompatible filters that may not provide adequate protection against contaminants.

Why Choose MANN‑FILTER?

MANN‑FILTER is a globally recognised brand known for its commitment to quality, reliability, and innovation in automotive filtration. The WK 939/7 filter embodies these values by offering:

• Consistent performance across diverse fuel types.
• Robust construction that withstands the rigours of daily driving.
• A proven track record of enhancing engine longevity and reducing maintenance costs.

Conclusion

The MANN‑FILTER Fuel Filter WK 939/7 is an essential component for any passenger car that demands clean fuel delivery. Its advanced filtration capability, durable build, and ease of installation make it a reliable choice for vehicle owners and mechanics alike. By incorporating this filter into your maintenance routine, you protect critical engine components, ensure efficient combustion, and contribute to the overall longevity of your vehicle.