Donaldson Filtration P550937 Fuel Filter Water Separator Spin-On

The Donaldson P550937 is a high-efficiency fuel filter and water separator designed to protect diesel engines from harmful contaminants and moisture. This spin-on style filter features Donaldson's innovative Twist & Drain design for convenient water removal without removing the filter from the system.

Key Features:

• 99% filtration efficiency at 10 microns (SAE J1985 tested)
• 95% emulsified water separation efficiency keeps moisture out of fuel system
• Spin-on design with 1-1/4"-12 UN thread size for easy installation
• Twist & Drain feature allows water drainage without filter removal
• Cellulose and meltblown media construction for superior filtration performance
• 12.24-inch overall length with 4.66-inch outer diameter
• Primary application for Komatsu equipment (OEM 6003114510)

This heavy-duty fuel water separator is engineered to OEM specifications and is commonly used in construction equipment, heavy trucks, and off-road vehicles. Cross-references include Baldwin BF1288-O/BF1357, Fleetguard FS19946, WIX 33942, and Racor S3207T. The filter effectively removes water and particulate contamination to maintain optimal fuel system performance and extend engine life.