If you are operating Hitachi Zaxis series excavators, maintaining the hydraulic system's purity is critical for preventing pump failure and valve sticking. The 4288963 (also known as 4288963) filter element is the precision-engineered pilot filter designed to protect your machine's sensitive control circuits.
As a professional heavy equipment parts provider, we offer the 4288963 Filter Element in both Original and OEM Standard versions to ensure your fleet stays in peak condition without the premium dealer price tag.
This 4288963 Filter is specifically utilized in the pilot hydraulic system of medium and large excavators. Below are the verified specifications for procurement reference:
| Field | Details |
|---|---|
| Model NO. | ZX200-3, ZX210-3, ZX240-3, ZX270-3, ZX330-3, ZX350-3, ZX450-3 |
| Part Number | 4288963 / 4288963 (No dash version) |
| Product Name | Hydraulic Pilot Filter Element |
| Type | Pressure Line Filtration |
| Condition | Brand New, OEM Standard Replacement |
| Application | Engine rebuild, hydraulic system overhaul, routine maintenance |
| Stock Status | In Stock / Fast Dispatch |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery | DHL, Fedex, EMS, UPS, Air/Sea Freight |
Compare our OEM-standard 4288963 replacement against generic aftermarket filters often found in the market:
| Core Factor | Our OEM-Standard 4288963 | Low-Cost Generic Filters |
|---|---|---|
| Filter Media | High-grade fiberglass / synthetic mesh | Standard cellulose paper (prone to collapse) |
| Filtration Accuracy | Beta 200+ (Capture 99.5% of contaminants) | Unrated (Allows large particles to pass) |
| Pressure Resistance | Reinforced center tube for high surge loads | Thin metal frame; collapses under cold start |
| Seal Quality | High-temp Viton or Nitrile O-rings included | Recycled rubber (Leaks after 100 hours) |
| Service Life | 500 - 1000 Operating Hours | Fails unpredictably before 250 hours |
| Fitment Guarantee | 100% Match for Hitachi ZX-3 Series | Vague sizing; requires force to install |
Q: Why is the hydraulic pilot warning light on for my ZX240-3?
A: A clogged 4288963 filter element increases backpressure in the pilot line. This reduces the signal pressure sent to the main control valve, resulting in sluggish joystick response or jerky movements. Replacing the filter immediately prevents debris from entering the pilot valves.
Q: How often should I replace the 4288963 Pilot Filter?
A: Standard intervals are every 1000 hours, but for high-intensity construction or demolition, we recommend inspection every 500 hours. A black or brittle filter element is a sign of oil oxidation.
Q: Why Choose This Filter Element?
A: Our 4288963 features an OEM-standard tri-metal structure and high-efficiency bypass protection. It is trusted by repair shops and equipment fleets worldwide for its ability to maintain stable pilot pressure.
Not sure how this issue affects your equipment? Our technical team helps operators avoid costly downtime:
Identify potential risks during hydraulic system maintenance.
Recommend suitable replacement parts based on your machine's wear level.
Support both inspection advice and reliable parts supply.
Our goal is to ensure your Hitachi excavator engine and hydraulic components perform like new.
We specialize in complete engine assembly and high-precision spare parts for global brands including Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our inventory covers everything from cylinder liners, pistons, and piston rings to critical internal components like crankshafts, connecting rods, and thrust washers.
Whether you are performing a minor service or a major engine overhaul, we provide the full gasket kit, fuel injectors, turbochargers, water pumps, and oil pumps required for a professional rebuild. Our cylinder heads and engine blocks meet or exceed original specifications for heat dissipation and durability.
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