22.50 EUR
Mann Filter WK5161 Fuel Filter
Height [mm]: 300 - Inlet Ø [mm]: 8 - Outer diameter [mm]: 55 - Outlet Ø [mm]: 8
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Mann Filter WK5161 Fuel Filter
The WK5161 Fuel Filter from Mann Filter is a high‑performance component designed to protect the engine of premium vehicles, particularly those in the BMW and ALPINA families. Its advanced filtration technology ensures that only clean fuel reaches the combustion chamber, thereby extending engine life and maintaining optimal performance.
Key Design Features
- In‑Line Construction: The filter is built as a straight‑through unit (55 mm outer diameter, 300 mm length), allowing it to be installed directly into the existing fuel line without additional adapters.
- Durable Housing: Made from high‑strength polymer reinforced with metal inserts, the housing resists corrosion and withstands the high pressures typical of modern fuel systems.
- Optimized Filter Media: The filter media is engineered to capture particles as small as 5 µm while maintaining low pressure drop, ensuring that fuel flow remains efficient even under demanding driving conditions.
- Seamless Seal Design: A precision‑machined O‑ring seal guarantees a leak‑free connection, critical for safety and reliability in high‑pressure fuel systems.
Performance Benefits
The WK5161 delivers superior protection against contaminants such as dirt, rust flakes, and water droplets. By preventing these impurities from reaching the fuel injectors or carburetor, the filter:
- Maintains fuel injector integrity, reducing wear and prolonging service intervals.
- Prevents engine misfires caused by clogged injectors.
- Supports optimal fuel economy by ensuring consistent fuel delivery.
- Reduces the risk of fuel system corrosion, thereby extending overall vehicle lifespan.
Compatibility Overview
The WK5161 is specifically engineered for a wide range of BMW and ALPINA models, including:
- BMW 3 Series (E36, E46, E90/E92/E93)
- BMW 5 Series (E34, E39, E60/E61)
- BMW 7 Series (E65/E66/E67/E68)
- BMW 8 Series (E31, Z3, Z4)
- ALPINA B3, B8, B10, B12
Its standard dimensions and thread specifications (55 mm OD / 300 mm length) make it a drop‑in replacement for OEM filters in these models.
Installation Guide
- Safety First: Disconnect the vehicle’s battery and relieve fuel system pressure using the manufacturer’s recommended procedure.
- Remove Old Filter: Unscrew the existing filter housing from the fuel line. Carefully detach the O‑ring seal to avoid damage.
- Prepare New Filter: Inspect the WK5161 for any packaging damage. Replace the O‑ring if it shows signs of wear.
- Install: Slide the filter into place, ensuring a snug fit. Tighten to the manufacturer’s torque specification (typically 12 Nm, but verify with your vehicle’s service manual).
- Re‑pressurize System: Reconnect the battery and restore fuel pressure. Check for leaks around the new filter.
- Test Drive: Verify that engine performance is normal and that no warning lights appear on the instrument cluster.
Maintenance & Replacement Interval
The WK5161 is designed to last for a substantial mileage range, but regular inspection is recommended. Typical replacement intervals are:
- Every 30,000 km (18,600 mi) for high‑usage vehicles.
- Every 45,000 km (28,000 mi) for moderate usage.
During each service cycle, inspect the filter housing and O‑ring for signs of wear or contamination. Replace immediately if any damage is detected to maintain fuel system integrity.
Technical Specifications
| Parameter | Value |
|---|---|
| Filter Type | In‑Line Fuel Filter |
| Outer Diameter | 55 mm |
| Length | 300 mm |
| Thread Size | 13 mm x 1.5 mm (standard automotive) |
| Pressure Rating | Up to 8 bar |
| Filtration Efficiency | ≥99.9% for particles >5 µm |
| Material | Polymer housing with metal reinforcement; filter media: polyester‑based composite. |
| Manufacturer | Mann Filter (Germany) |
Customer Experience Highlights
Owners of BMW and ALPINA vehicles who have installed the WK5161 report:
- Consistent engine performance even after extended periods without filter replacement.
- No noticeable drop in fuel economy compared to OEM filters.
- Easy installation with no special tools required beyond a standard socket set.
- High confidence in the product’s durability, especially under high‑pressure fuel systems.
Conclusion
The Mann Filter WK5161 Fuel Filter stands out as a reliable, high‑quality component for premium vehicles that demand rigorous protection of their fuel systems. Its robust construction, precise filtration capability, and proven compatibility with a broad range of BMW and ALPINA models make it an excellent choice for both professional mechanics and knowledgeable owners seeking to maintain engine health and performance over the long term.
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| Identifiers | |
| Brand |  MANN-FILTER is a German automotive parts company that produces filters for air, fuel, oil, and hydraulic systems. The company was founded in 1961 by HeinzMANN and is now a subsidiary of the Freudenberg Group. |
| MPN | MANN-FILTER WK 516/1 |
| ID | 20437928 |
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| Key Features | |
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