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AF4903 Heavy-Duty Primary Air Filter
High-Capacity Filtration for Industrial Construction Machinery
Engineered for high-debris environments, protecting large-bore engines in mining and earthmoving.
Direct technical equivalent to Fleetguard AF4903, Donaldson P134353, and Mitsubishi ME063130.
Robust pleated media design ensures consistent airflow and low pressure drop over long intervals.
Heavy-duty gasket system eliminates air bypass, maintaining peak performance in Hitachi and Komatsu units.
Detailed Product Description
Uncompromising Engine Defense
The AF4903 is a high-efficiency primary air filter designed to serve as the first line of defense for heavy-duty diesel engines. By capturing microscopic particulates before they reach the intake manifold, this filter prevents cylinder scoring and turbocharger wear. Its high-capacity design is specifically optimized for the high-volume air intake requirements of machinery like the Komatsu HD series and Hitachi EX series.
Why Professionals Choose AYREST
In the industrial sector, "good enough" is a risk to your bottom line. Our AF4903 utilizes advanced cellulose-synthetic media that provides superior Beta Ratios compared to standard aftermarket filters. This ensures that even under the extreme vibrations of a Furukawa rock drill or the high-heat cycles of a Hyundai excavator, the filter structure remains intact.
Seamless Integration
Every AF4903 is manufactured to precise dimensional tolerances (276.0 mm x 393.0 mm), ensuring a perfect fit in the original filter housing. This eliminates the risk of "housing rattle" or seal gaps that are common with lower-quality generic replacements.
Technical Specifications
| Parameter | Specification Detail |
|---|---|
| Model Number | AF4903 |
| Filter Type | Primary Air Filter |
| Outer Diameter (D1) | 276.0 mm |
| Inner Diameter (D2 / D3) | 165.0 mm / 23.0 mm |
| Overall Height (H1) | 393.0 mm |
| Height 2 (H2) | 380.0 mm |
| Style | Radial Seal Element |
Cross Reference
Fleetguard: AF4903 | Donaldson: P134353 | Mitsubishi: ME063130 / 3123033200 | HiFi Filter: SA 11812
Terex: 74524503 | Micro: AC7480 | PMC: PE7147 | Mann Filter :C 28 960 z
Application Industry Fitment
WA420-3, WA450, WA470-3, HD325-6, HD405-6, PC400 Series.
Hitachi EX300-2, EX330, SCX900-2; Hyundai R420LC, R450LC.
Furukawa HCR 1000/1200, Kobelco SK300/480LC, John Deere 850G.
Quality Assurance
- Standardized Testing: Manufactured to comply with ISO 5011 air filtration standards for efficiency and capacity.
- Structural Integrity: Heavy-duty inner and outer metal liners prevent media collapse during peak engine suction.
- Reliability: Each unit is inspected for gasket uniformity to guarantee an airtight seal.
Technical FAQ
Q: Can the AF4903 air filter be used in Komatsu WA470 loaders?
A: Yes, the AF4903 is the primary air filter replacement for Komatsu WA470-1, WA470-3, and WA470-3H models.
Q: What is the benefit of the AF4903's radial seal design?
A: The radial seal provides a high-strength interface that remains secure under extreme vibration, preventing unfiltered air bypass.
Q: Is the AF4903 interchangeable with the Donaldson P134353?
A: Yes, they are direct technical cross-references with identical dimensions and filtration efficiency.
Q: How often should I replace the primary air filter on an excavator?
A: Replacement should occur when the restriction indicator triggers or during scheduled maintenance (typically 500-1,000 hours).
Purchase
"Global Reliability for High-Demand Industrial Fleets"
- 💰 Request a Quote: Competitive pricing on bulk wholesale orders for traders and fleet owners.
- 🌍 Global Distribution: Reliable shipping to Africa, the Middle East, and Southeast Asia.
- 🛠️ Expert Support: Provide your equipment serial number for precise technical verification.
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Email: Sales@enginegensetparts.com
Official Website: www.enginegensetparts.com
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