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FS19770 Fuel Filter / Water Separator
Moisture and water contamination in diesel fuel pose an immediate threat to modern common-rail injection systems, frequently causing internal corrosion, injector pitting, and sudden power drops. The FS19770 Fuel Filter / Water Separator addresses this vulnerability by integrating high-efficiency water-coalescing media with multi-tiered particle filtration layers. It successfully isolates free and emulsified water from the diesel stream, ensuring only clean, bone-dry fuel reaches the combustion chambers of hard-working industrial engines.
Acting as a premium direct substitute for Fleetguard FS19770, Donaldson P551864, Mann Filter WK 9052 x, and HiFi Filter SN 25120, this spin-on canister features precise dual-thread machining to guarantee an absolute, hermetic seal under high operational stress. Its thick-walled outer housing resists aggressive pressure pulsations and intense structural shocks, making it an excellent choice for heavy earthmoving, paving, and power generation machinery operating continuously in harsh field environments.
| Technical Parameter Index | Specification Data (Metric) | Specification Data (Imperial) |
|---|---|---|
| Product Model / Number | FS19770 / P551864 | FS19770 / P551864 |
| Filter Classification | Heavy-Duty Fuel Water Separator | Heavy-Duty Fuel Water Separator |
| Outer Diameter 1 (D1) | 98.0 mm | 3.86 inches |
| Outer Diameter 2 (D2) | 94.0 mm | 3.70 inches |
| Gasket Diameter 3 (D3) | 72.0 mm | 2.83 inches |
| Mounting Thread 1 (D7) | 1"-14UNF | 1"-14UNF |
| Base/Bowl Thread 2 (D8) | 1"1/4-10UNF | 1"1/4-10UNF |
| Overall Height 1 (H1) | 168.0 mm | 6.61 inches |
| Housing Height 2 (H2) | 166.0 mm | 6.54 inches |
| Inner Element Height 3 (H3) | 155.0 mm | 6.10 inches |
| Media Composition | Advanced Hydrophobic Synthetic Blend | Advanced Hydrophobic Synthetic Blend |
This high-capacity separation filter offers exceptional compatibility across an extensive range of global heavy machinery, industrial power networks, and fleet equipment:
Heavy Crawlers & Wheeled Excavators: Fits extensive fleets including Hyundai R series (R 140 to R 430 LC-9A, W-7A, and W-9 models), Liebherr Litronic excavators (R 900 C to R 974 B, A 900 C to A 954 B), Kobelco (SK 135 SR-2, SK 210 IV LC), JCM (907 to 922 C series), Lonking (LG 6060 D to LG 6215 D layouts), Doosan (DX 85 R-3), Yuchai (YC 135-8 to YC 360-8 assemblies), and Bobcat (E 85 compact units).
Asphalt Pavers & Compaction Rollers: Compatible with Bomag equipment lines including BF pavers (BF 300 C, BF 300 P series) and an expansive list of BW road rollers (BW 141, BW 151, BW 154, BW 161, BW 174, BW 177, BW 179, BW 211, and BW 213 DH/PDH architectures), alongside Hamm heavy compaction machinery (2420 DH, 2520 D, 3412, 3414, 3516 to 3520, and GRW 10 / 15 / 18 / 21 / 24 pneumatic tire rollers).
Wheel Loaders & Earthmovers: Provides engine protection for Hyundai loaders (HL 740-7A to HL 780-9, HL 940, HL 955), Liugong wheel loaders and compact excavators (CLG 835, CLG 906 C, CLG 908 C, CLG 915 D), Shantui (SL 50 W-3), Hidow (HW 130-8, HW 240-8, HW 360), XCMG (XE 150, XE 55, XE 80), and Clark (55 B).
Industrial Diesel Engines & Power Generation: Integrated onto Komatsu heavy power systems (SAA6D107E, SAA6D114E-5A, SAAD6D107E-2 blocks), Liebherr industrial engines (D 926 T), and Kohler stationary generator enclosures ranging from 40 kVA to massive 1000 kVA backup installations.
Specialized Fleet Infrastructure: Fits Grove mobile cranes (RT 9000 E2), Case agricultural tractors (Quadtrac 485), New Holland utility builds (E 135 B, E 150 B SR, E 265 SR), Sany mini-units (SY 50 U), Terex articulated haulers (3066 C, TR 35), and Volkswagen heavy transport vehicles (23.210 to Titan 26.310 trucks).
Q1: Is the FS19770 a fuel filter or a fuel-water separator?
A: The FS19770 is strictly a high-efficiency particulate fuel filter designed to capture rigid contaminants, dust, and rust scales from the fuel stream. It does not contain a water-coalescing media or a water collection bowl interface.
Q2: Does this filter match the performance standards of OEM brands?
A: Yes. This filter is manufactured using premium cellulose blend media that meets or exceeds the micron ratings and structural specifications of major brands like Fleetguard, Donaldson, and Mann Filter, ensuring identical system protection at a better total cost of ownership (TCO).
Q3: What are the common indicators that the FS19770 needs to be replaced?
A: Key indicators include unexpected drops in engine fuel rail pressure, engine hesitation under full load, hard starting issues, or a visible drop in equipment fuel efficiency caused by particulate restriction within the filter media.
Q4: Can this filter handle high-vibration construction site environments?
A: Absolutely. It is built with a heavy-gauge, deep-drawn steel shell and reinforced internal support cores specifically to resist severe chassis shaking, shock loads, and high hydraulic pulsations common to earthmoving and paving environments.
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