Fleetguard FS20172 Fuel Water Separator 6-Pack Cummins X15 PACCAR MX13

Fleetguard FS20172 Fuel Water Separator 6-Pack — Genuine OEM 10-Micron Filter for 2017+ Cummins X15/X12 & PACCAR MX-13/MX-11 Engines The Fleetguard FS20172 6-Pack is a case of six genuine Cummins Filtration StrataPore cartridge fuel/water separators rated at 10 microns, specifically designed for the PACCAR K37-1029 fuel housing platform found in 2017 and newer (EPA17+) Kenworth and Peterbilt trucks. This filter directly replaces PACCAR OEM part number K37-1029 and supersedes the older K37-1010, K37-1011, and K37-1012 cartridges. The FS20172 fits trucks running BOTH Cummins engines (X15, X12, ISX15, ISX12) AND PACCAR engines (MX-13, MX-11) — making it the correct fuel/water separator for the majority of 2017+ Kenworth and Peterbilt Class 8 trucks regardless of engine choice. The StrataPore coalescing media delivers 98% emulsified water separation and fine particulate removal, protecting high-pressure common-rail injectors from water damage and contamination. Buying a 6-Pack covers a full year of service intervals for a single truck, or one service cycle for a small fleet. Trusted by fleet managers, owner-operators, and diesel shops running Kenworth T680, T880, W990 and Peterbilt 567, 579, 389 trucks. Technical Specifications Specification Value Part Number FS20172 Brand Fleetguard (Cummins Filtration) Filter Type Fuel/Water Separator Cartridge Media Type StrataPore Coalescing Micron Rating 10 Microns Emulsified Water Separation 98% Length / Height 193.5 mm (7.62 in) Outer Diameter 105.7 mm (4.16 in) Inner Diameter 20.6 mm (0.81 in) Housing Platform PACCAR K37-1029 Emissions Compliance EPA17 (2017+) and newer Supersedes K37-1010, K37-1011, K37-1012 Quantity 6 Filters Per Box Compatible Engines Engine Brand Engine Models Emissions Rating Cummins X15 EPA 2017, EPA 2021 Cummins X12 EPA 2017, EPA 2021 Cummins ISX15 (late production) EPA 2017 Cummins ISX12 (late production) EPA 2017 PACCAR MX-13 EPA 2017, EPA 2021 PACCAR MX-11 EPA 2017, EPA 2021 Important: The FS20172 is for 2017 and newer (EPA17+) trucks with the PACCAR K37-1029 fuel housing ONLY. Pre-2017 Cummins ISX engines use the FS19764 (Davco 102527 housing) or FF5776 — these are completely different filter platforms. Always verify your fuel housing part number before ordering. Compatible Trucks Truck Brand Models Years Kenworth T680, T880, W990, C500 2017+ Peterbilt 567, 579, 389 2017+ Note: This filter is specific to Kenworth and Peterbilt trucks running the PACCAR K37-1029 fuel housing. Freightliner trucks use a different fuel filtration system (typically Davco-based with FS19764 or FS19915). Cross-Reference Part Numbers Cross-Reference Brand K37-1029 PACCAR (primary OEM housing) K37-1010 PACCAR (superseded) K37-1011 PACCAR (superseded) K37-1012 PACCAR (superseded) K371011 PACCAR (alternate format) 5406033 Cummins BF1399-D Baldwin P551849 Donaldson 33818 Wix FS20172 vs FS19764 vs FS19765 — Which Filter Platform Do You Have? Feature FS20172 (This Product) FS19764 FS19765 Housing Platform PACCAR K37-1029 Davco 102527 Davco 102528 Micron Rating 10 micron 10 micron 25 micron Primary Trucks Kenworth, Peterbilt Freightliner, International Freightliner (1998-2002 ISX) Primary Engines Cummins X15/X12 + PACCAR MX-13/MX-11 Cummins ISX + Cat C13 Cummins ISX + Volvo D13 + Mack MP8 Physical Height 193.5 mm 178.79 mm 178.79 mm Physical OD 105.7 mm 106.93 mm 106.93 mm These three filters are NOT interchangeable — they fit different fuel housing platforms. Check your truck's fuel housing part number to determine the correct filter. When to Replace Replace at each scheduled service interval or when you observe reduced fuel pressure, extended cranking, loss of power under load, water-in-fuel warnings, or fuel system fault codes. The 10-micron StrataPore media captures fine contaminants that coarser filters miss, extending injector life on modern high-pressure common-rail systems. What's Included 6x Fleetguard FS20172 Fuel Water Separator Cartridges with O-Rings — packed in one factory-sealed Fleetguard box. Each cartridge is genuine Cummins Filtration, not aftermarket or repackaged. Why Choose Genuine Fleetguard for Your Kenworth or Peterbilt? The FS20172 is engineered by Cummins Filtration specifically for the PACCAR K37-1029 fuel housing. The StrataPore coalescing media is calibrated for the flow characteristics and pressure specifications of both Cummins X-Series and PACCAR MX engines. Aftermarket cartridges may physically fit the housing but often use media with different water separation efficiency, resulting in water passing through to injectors. On Cummins X15 and PACCAR MX-13 engines where injector replacement costs $8,000-$18,000+, genuine Fleetguard filtration is the most cost-effective protection available.