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600-311-9971 Fuel Filter for Komatsu and Hitachi Heavy Equipment
High-Pressure Rail Defense for Isuzu AA6HK1X & 6WG1TQA Engines
Direct replacement for Komatsu 600-311-9971 and Isuzu 1855710190 with zero-gap seating.
Shields high-pressure rails from microscopic particulates and fuel-borne abrasive debris.
Perforated metal reinforcement prevents media collapse under heavy-duty suction loads.
B2B support for wholesale orders, private labeling, and customized filtration grades.
600-311-9971 Solving Fuel Contamination in Harsh Environments
The 600-311-9971 fuel filter is a critical safeguard designed to intercept abrasive particulates before they reach the sensitive injection system. In heavy-duty mining and construction sites, fuel quality can fluctuate significantly. This filter utilizes a multi-layer depth filtration technology that maintains a high flow rate while trapping contaminants that cause injector wear and pump failure. Consistent use prevents engine "hunting" and unexpected power loss-key factors in reducing site downtime.
Radial-Flow Efficiency
As fuel passes through the micron-graded media, particles are trapped within the fiber layers. The 600-311-9971 employs a radial flow design, where fuel enters through the perforated outer shell and exits via the center, maximizing surface area in a compact cartridge.
AYREST Technical Integrity
Unlike generic "white-box" filters, we use high-grade metal end caps and specialized bonding agents that resist chemical degradation from high-sulfur or bio-diesel blends, ensuring no bypass leakage under intense equipment vibration.
Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Product Style | Cartridge Fuel Filter |
| Outer Diameter (D1) | 62.0 mm |
| Sealing Diameter (D2) | 50.0 mm |
| Internal Diameter (D3) | 38.0 mm |
| Total Height (H1) | 42.0 mm |
| Filter Media | High-Efficiency Synthetic Blend |
| End Cap Material | Corrosion-Resistant Steel |
600-311-9971 Interchange & Compatibility
OEM & Competitor Cross Reference
Komatsu: 600-311-9971 | Isuzu: 1-85571-019-0 | HiFi: SN 25049 | Inline: FF31611| Sakura: F-56040 | SF FILTER :SKV 454
600-311-9971 Technical FAQ
Q: Is this filter compatible with bio-diesel?
A: Yes. The synthetic media and steel components are engineered to be chemically compatible with standard mineral diesel and bio-diesel blends without degrading structural integrity.
Q: Can I use this for both Komatsu and Hitachi machinery?
A: Absolutely. The 600-311-9971 fits various Isuzu engines (like the AA6HK1X) used across Zaxis excavators and Komatsu dozers/loaders.
Q: How often should the fuel filter be replaced?
A: Typically every 250 to 500 hours. In high-dust environments or when using low-grade fuel, inspection should occur every 200 hours to prevent pump cavitation.
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