Quicksilver Diesel Fuel Filter 8M0231398 (MerCruiser TDI Engines)

Keep your MerCruiser diesel engine running clean and strong with this genuine Quicksilver diesel fuel filter (Mercury part number 8M0231398). Specially designed for Mercury MerCruiser diesel inboard engines based on Volkswagen TDI technology, this filter is a critical component for maintaining fuel purity in high-pressure common-rail diesel systems. It effectively separates water from diesel fuel and traps microscopic particles (down to ~10-15 microns), preventing them from causing wear or damage to fuel injectors and the high-pressure fuel pump.

This Quicksilver filter is typically used in MerCruiser TDI V6 engines such as the 3.0L (225 HP, 265 HP, etc.) diesel models. It is built to OEM specifications, ensuring a perfect fit into the engine’s fuel filter housing and uncompromised fuel flow. The filter media is engineered for diesel use, with robust water-separating capabilities to handle the higher moisture content and impurities often found in marine fuel. By replacing this filter at regular intervals, you can avoid issues like reduced power, poor fuel economy, or engine sputtering that arise from clogged or water-contaminated fuel systems.

Use Cases & Recommendations:

• Ideal for cabin cruisers, sport yachts, and work boats equipped with MerCruiser VW TDI diesel engines – maintains engine reliability on long voyages or under heavy loads.
• It is recommended to replace the diesel fuel filter at least every 100 hours or annually (whichever comes first) to ensure consistent fuel system protection, and even more frequently if using lower-quality diesel or operating in humid environments.
• Boaters should keep a spare Quicksilver 8M0231398 filter on board, especially for long offshore trips; diesel contamination (water or algae) can occur unexpectedly, and a quick filter change can save your engine from stalling.
• This filter meets or exceeds MerCruiser's OEM requirements, making it the safest choice to preserve your engine warranty and performance – avoid cheap imitations that may not properly separate water or filter fine particles.