Fleetguard FS1000 Fuel Water Separator 6-Pack Cummins Caterpillar OEM

Fleetguard FS1000 Fuel Water Separator 6-Pack — Genuine OEM 10-Micron Spin-On Filter for Cummins & Caterpillar Diesel Engines The Fleetguard FS1000 6-Pack is a case of six genuine Cummins Filtration spin-on fuel/water separators — the most universally compatible fuel filter in the Fleetguard lineup. This single filter fits Cummins ISC, ISL, ISM, ISX, M11, N14, and QSK19 engines AND Caterpillar C7, C9, C10, C11, C12, C13, C15, C16, and 3406 engines, making it the correct fuel/water separator for the majority of Class 8 trucks, school buses, construction equipment, agricultural machinery, marine vessels, and power generation units in North America. The FS1000 uses StrataPore primary media to deliver 10-micron filtration at 98.7% efficiency (SAE J1985) with 95% emulsified and free water separation. It is a direct spin-on filter (not a cartridge) that threads onto filter heads using a standard 1-14 UNS-2B mount with standpipe. The FS1000 is the mandatory upgrade of the older FS1212 — required on all Cummins Select and Quantum 19L engines equipped with StrataPore filtration. Buying a 6-Pack provides a full year of service intervals for a single vehicle, or covers one service cycle for a small fleet. With compatibility across 40+ equipment brands and 80+ cross-reference part numbers, the FS1000 is the single most versatile diesel fuel filter you can stock. Technical Specifications Specification Value Part Number FS1000 Brand Fleetguard (Cummins Filtration) Filter Type Spin-On Fuel/Water Separator Media Type StrataPore Micron Rating 10 Microns Filtration Efficiency 98.7% (SAE J1985) Emulsified Water Separation 95% Free Water Separation 95% Overall Height 249.07 mm (9.806 in) Largest Outside Diameter 93.22 mm (3.67 in) Gasket Outside Diameter 71.88 mm (2.83 in) Gasket Inside Diameter 62.48 mm (2.46 in) Thread Size 1-14 UNS-2B Standpipe Yes Weight ~0.81 kg per filter Upgrades FS1212 (direct replacement) Longer Version Of FS1001 Marine Equivalent FS1009 Service Part 255622S (Thread Seal Gasket) Quantity 6 Filters Per Box Compatible Filter Heads Filter Head Application 142784S General application 3914857S Cummins ISC engine 3930618S General application 3962018S General application FH126 Remote mount Compatible Engines Engine Brand Engine Models Cummins ISC 8.3L, ISL 9.0L, ISM, ISX, M11 (1995+), N14, QSK19, QSL, QSM Caterpillar C7, C9, C10, C11, C12, C13, C15, C16, 3406 Required: On all Cummins Select and Quantum 19L engines equipped with StrataPore filtration technology. Compatible Trucks, Equipment & Applications Category Brands / Models Class 8 Trucks Freightliner, Kenworth, Peterbilt, International, Western Star, Volvo, Mack School Buses Blue Bird, Thomas Built, IC Bus (with Cummins ISC/ISL) Construction Komatsu, Volvo CE, Terex, JCB, Case (with Cummins/Cat power) Agricultural Case IH, New Holland, AGCO (with Cummins/Cat power) Mining Atlas Copco, Terex, Komatsu Marine Cummins marine engines (use FS1009 for marine-certified version) Power Generation Cummins gensets with ISC, ISL, ISM, QSK engines RVs / Motorhomes Monaco, Newmar, Tiffin (with Cummins ISC/ISL) Industrial Compressors, pumps, generators with Cummins/Cat diesel Cross-Reference Part Numbers (Top 25 — Full list exceeds 80 numbers) Cross-Reference Brand 3329289 Cummins (primary OEM) 3889716 Cummins 3945068 Cummins 3161407 Cummins BF1259 Baldwin P551000 Donaldson 33406 Wix 3406 NAPA PS8048 Fram LFF1000 Luber-Finer F71000 Purolator TP1292 AC Delco H181WK Hengst WK965 Mann 2568753 / 256-8753 Caterpillar RE160384 John Deere 1310368H2 Komatsu 12977622 Volvo 15271319 Terex 87674239 Case IH 86021254 New Holland 5541-7098-00 Atlas Copco 72515622 AGCO 86406 Carquest FS1212 Fleetguard (superseded) FS1000 vs FS1212 — What Changed? Feature FS1212 (Old/Superseded) FS1000 (Current/This Product) Media Standard cellulose StrataPore synthetic Efficiency Lower 98.7% at 10 microns Water Separation Lower 95% emulsified & free Mount 1-14 UNS-2B 1-14 UNS-2B (same — drop-in) Status Superseded Current production The FS1000 is a drop-in upgrade. If your engine currently uses the FS1212, switch to the FS1000 — same mount, better filtration. Related Fleetguard Fuel Filters in Our Store Filter Type Application FS1000 (this product) Spin-on, 1-14 UNS-2B thread Universal Cummins/Cat — direct mount FF5776 Spin-on, M90 thread Cummins ISX — secondary, Davco-compatible mount FS19764 Cartridge for Davco 102527 Cummins ISX — Davco Fuel Pro housing FS19765 Cartridge for Davco 102528 Volvo D13, Mack MP8 — Davco housing FS19915 Spin-on cartridge Detroit DD13/DD15/DD16 FS20172 Cartridge for PACCAR K37-1029 Kenworth/Peterbilt — PACCAR housing These are NOT interchangeable — each fits a different fuel system platform. The FS1000 is the only spin-on in this group that mounts directly to a filter head without a separate housing. When to Replace Replace at each scheduled fuel filter service interval — typically every 15,000-25,000 miles for on-highway applications. Replace sooner if operating in dusty environments, using low-quality fuel, or if you observe loss of power, extended cranking, water-in-fuel warnings, or fuel system fault codes. The FS1000's StrataPore media provides higher dirt-holding capacity than the FS1212, but should still be changed at regular intervals. What's Included 6x Fleetguard FS1000 Fuel Water Separator Filters — packed in one factory-sealed case. Each filter is genuine Cummins Filtration with StrataPore media and integrated standpipe. Not aftermarket or repackaged. Why Choose Genuine Fleetguard FS1000? The FS1000 is Fleetguard's flagship universal fuel/water separator — engineered, tested, and certified by Cummins Filtration for the broadest range of diesel engine applications. Its StrataPore media is specifically designed for modern ULSD (ultra-low sulfur diesel) fuels and provides consistent 95% water separation throughout the entire service interval. Aftermarket equivalents may physically thread onto the same filter head but often use inferior media that allows water and fine particles to reach injectors and fuel pumps. On engines where fuel system repairs cost $5,000-$15,000+, a genuine FS1000 at approximately $20-22 per filter is the smartest investment in fuel system protection.