Fleetguard FS1000 Fuel Water Separator
Fleetguard FS1000 Fuel Water Separator
Fleetguard FS1000 Fuel Water Separator
Fleetguard FS1000 Fuel Water Separator
BRAND: Fleetguard Atmus Filtration Technologies | SKU: Fleetguard-FS1000

Fleetguard FS1000 Fuel Water Separator

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Fleetguard FS1000 Fuel Water Separator Filter is a High Efficiency 10 Micron filter that removes both free and entrained water from diesel fuel. The Fleetguard Fuel Water Separator FS1000 uses the patented Stratpore Media Required on all Cummins Select and Quantum 19L Engines.
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Fleetguard FS1000 10 Micron Fuel Water Separator Filter - Spin-On

Fleetguard FS1000 Fuel & Water Separator – High‑Efficiency Stratapore Filtration for Cummins, CAT & PACCAR Engines

The Fleetguard FS1000 is a premium Fuel and Water Separator engineered for superior protection in modern heavy‑duty diesel applications. Most listed fitments use the Cummins X12 engine, with additional coverage for Cummins X15, ISX12, ISX15, and select PACCAR MX‑13 and PX‑9 platforms. Applications span 2009–2025, making the FS1000 a reliable upgrade for a wide range of commercial vehicles and vocational trucks.

Built with patented Stratapore™ synthetic media, the FS1000 delivers significantly higher filtration performance than the FASS FS‑1001 Water Separator. Its multi‑layer design captures fine contaminants while maintaining stable fuel flow, ensuring cleaner fuel and improved injector, pump, and rail system longevity. The FS1000’s 10‑micron spin‑on design provides enhanced water removal capability, reducing bacteria growth and protecting sensitive high‑pressure fuel components.

With up to 99% water separation efficiency, the FS1000 is engineered for extreme operating environments, cold‑weather performance, and long‑haul reliability. This advanced multi‑stage separator helps prevent corrosion, injector damage, and premature wear caused by water intrusion in diesel fuel systems.

Important: Always confirm the correct filter part number using the vehicle’s VIN and engine serial number before ordering to ensure proper fitment.

The Fleetguard FS1000 Spin On Diesel Fuel filter benefits:

  • It has metal housing, which now makes this Fuel Water Separator an environmentally friendly filter.
  • Approved for use with both Bio-Diesel and Ultra Low Sulfur Diesel compatible.
  • Removes entrained water and emulsified water.
  • Filters to a 10 Micron level.

This Fleetguard FS1000 Replacement Fuel and Water Separator Filter applications:

  • Cummins ISL9, ISM02, ISM07, ISM11, ISX12, KTTA19C, LTA10, M11, M11‑C, N14, NT855/NTA855, QSK19/QSK19C, QSM11.
  • Caterpillar 3176, 3306, 3406/3406E, 3126, C7, C9, C10, C11, C12, C13, and C15 series diesel engines 
  • PACCAR    PX-8, MX-13
  • Detroit Diesel    Series 60

Fleetguard FS1001 Diesel Fuel Water Separator Filter Specification

  • Overall Height 249.07 mm  or 9.806 inches
  • Largest OD     93.47 mm  or 3.68 inches
  • Seam OD     93.22 mm  or 3.67 inches
  • Gasket OD     71.88 mm  or 2.83 inches
  • GASKET ID    62.48 mm or 2.46 inches
  • Thread Size    1-14 UNS-2B
  • Standpipe     YES
  • EMULSIFIED WATER SEPARATION   95 %
  • FREE WATER SEPARATION  95 %
  • EFFICIENCY, TWA BY SAE J 1985 98.7 %
  • MICRON RATING BY SAE J 1985 10 Micron

Diesel Fuel Water Separator Filter Cross References:

  • FASS FS-1001
  • Cummins 3413084
  • ABC BUS 631204850
  • AC TP1292
  • AGCO 72515622
  • ATLAS COPCO 5541-7098-00
  • BALDWIN BF1259
  • BLOUNT 10064607
  • CARQUEST 86406
  • CASE 87674239
  • CATERPILLAR 2568753
  • CUMMINS 3329289
  • TEREX 15271319
  • John Deere RE160384

The Cummins Filtration - Fleetguard diesel fuel filters deliver the best fuel filtration performance. These filters use the proprietary StrataPore media to remove harmful contaminants. Fleetguard on-engine filters to ensure optimal fuel system protection per demanding OEM specifications.

This Diesel Fuel Water Separator Filter is an extended-length version of the Fleetguard  FS-1001. This Fleetguard FS1000 Fuel Water Separator Filter is a longer version of the FASS HD/Titanium Series Replacement Water Separator Filter from Fleetguard FS-1001. This diesel fuel filter is an upgrade to the Fleetguard FS1212 Filter. The Fleetguard FS1000 is a 10-micron StrataPore fuel/water separator used in selected heavy-duty truck, construction, agricultural, and generator applications.

KLM performance offers quantity discounts on this Fleetguard Atmus Filtration Technologies FS1000 fuel water separator filter. The discounts will be illustrated when you add quantities over three to your cart.

  • By KLM Performance
  • Engine : All Diesel Engines
  • Fuel Type: Diesel Fuel
  • Filtration Level: Ten Micron
  • Item Number: Fleetguard FS1000
  • Make:  Caterpillar | Cummins
  • Model: N/A
  • Year: N/A
  • Manufacturer Part No: Fleetguard FS1000
  • Product Application: Fuel Water Separator Required on all Select Cummins and Caterpillar Diesel Engines.
  • Height: 4
  • Width: 8
  • Brand: Fleetguard Atmus Filtration Technologies  
  • FAQ: What is the difference between the Fleetguard FS1000 and Fleetguard FS1001 Ten Micron Diesel Fuel Water Separators?  The FS1000 is a longer version of the FS1001, offering more containment holding capacity. These Fleetguard Filters offer the same exact 10-micron filtration rating. 
  • Part Number: FS1000
  • Manufacturer: Fleetguard
  • Product Note: The regular draining of this diesel fuel water separator filter is required to ensure a long filter lifespan.
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