Fleetguard FS1000 Diesel Fuel Water Separator Cartridge — Pack of 2, Stratapore Multi-stage, Fits Cummins

Fleetguard FS1000 is a replacement diesel fuel water separator cartridge designed to remove water and contaminants from fuel systems on Cummins Select and Quantum 19L engines, supplied here as a convenient two-pack for scheduled maintenance.

This FS1000 cartridge is the Fleetguard upgrade that supersedes the older FS1212 and fits applications that call for reliable fuel polishing in heavy-duty diesel engines. Built with Stratapore media, the unit provides multi-stage filtration to protect injectors and fuel pumps from wear and corrosion caused by water and particulates. The listing includes two identical cartridges so you can replace both primary and standby elements or keep a spare on hand for prompt service.

How does the FS1000 protect my engine’s fuel system?

The FS1000 separates free and emulsified water while capturing fine solid particles before they reach sensitive fuel system components. Its layered Stratapore media traps contaminants at multiple depths, reducing the risk of injector damage and helping maintain consistent combustion. Using the correct fuel filter minimizes maintenance downtime and preserves fuel-system performance.

• Stratapore multi-layer filtration for staged contaminant capture
• Standpipe design that aids proper installation and flow
• Reduces water-related corrosion and injector wear
• Thread size 1-14 UNS-2B for secure mounting

Will the FS1000 fit my Cummins or Caterpillar application?

The FS1000 is an approved upgrade for engines that previously used FS1212 and is listed for Cummins Select and Quantum 19L platforms. It cross-references OEM numbers commonly used in heavy equipment, making it compatible with a range of industrial and off-highway machines. Always verify fit by matching thread size and overall dimensions with your current filter housing.

• Cross references include Cummins 3329289 and Caterpillar 2568753
• Overall height 249.07 mm (9.806 in) ensures correct housing engagement
• Outer diameter 93.22 mm (3.67 in) for proper sealing
• Thread 1-14 UNS-2B to match standard mounts

How do I install and service the FS1000 cartridge?

Installation follows standard spin-on or element-change procedures for your fuel filter head: depressurize, remove the old element, inspect sealing surfaces, and fit the FS1000 by hand-tightening to spec. Because this listing is a two-pack, you can replace both active and spare cartridges during the same service visit. Dispose of used filters and contaminated fuel according to local regulations.

• Depressurize fuel system before removal
• Check sealing surfaces and O-rings for wear
• Hand-thread then torque to manufacturer specification
• Keep one cartridge as an on-board spare for faster service

What are the physical specs and key features of this two-pack?

This product ships as a pack of two identical Fleetguard FS1000 elements, sized for heavy-duty diesel applications. The cartridge includes a standpipe and is engineered to sit correctly within compatible filter heads, providing consistent flow and filtration efficiency. Specs matter for fit and performance, so compare these dimensions to your existing unit before purchase.

• Pack quantity: 2 cartridges
• Outer diameter: 93.22 mm (3.67 in)
• Overall height: 249.07 mm (9.806 in)
• Thread size: 1-14 UNS-2B; includes standpipe

Who is this for: The Fleetguard FS1000 (pack of 2) is for fleet managers, service technicians, and equipment owners running Cummins Select/Quantum 19L engines or machines that cross-reference the listed OEM numbers. Choose this two-pack if you want a direct-fit, OEM-grade filtration element with Stratapore media for routine maintenance, rapid replacement, and improved protection against water and particulate contamination.