NewLine DAHL Fuel Filter Series NL-501-W – Replaces 501-W, DAHL 500 Series Fuel Filter/Water Separator Units

High-performance replacement DAHL Fuel Filter Series for DAHL fuel filter/water separator systems in marine and heavy equipment fuel circuits.
Direct replacement for 501-W and DAHL 500 Series Fuel Filter/Water Separator Units. Premium filtration efficiency.

Technical Specifications

Outside Diameter6.062 inch (154.0 mm)
Length9.719 inch (246.9 mm)
Inside Diameter1.469 inch (37.3 mm)
Micron Rating (Nominal)5.0
Micron Rating (Absolute)25.0
Sealing & Components[2] Attached

Item Information

The NewLine NL-501-W is engineered to meet or exceed OEM specifications for DAHL fuel filter/water separator systems in marine and heavy equipment fuel circuits. It provides superior protection for your equipment’s engine and hydraulic systems.

This filter serves as a direct, high-quality replacement for: 501-W, DAHL 500 Series Fuel Filter/Water Separator Units.

Key benefits:

  • Helps protect injectors and fuel system components from harmful particles.
  • Supports efficient combustion and reliable engine starting.
  • Aftermarket value with performance comparable to OEM fuel filters.

Note: All manufacturer names, symbols and part numbers are used for reference purposes only. The NewLine filter is an aftermarket equivalent and is not endorsed by the original equipment manufacturer.

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