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Primary & Safety Air Filter Element Set WG9X251900611 / WG9X251900621
High-Performance Filtration for SINOTRUK HOWO Series
Key Product Highlights
Professional Product Overview
Engineered for Harsh Intake Environments
Heavy-duty diesel engines in construction and long-haul transport are prone to turbocharger erosion and piston scuffing when intake filtration fails. The WG9X251900611 Air Filter set addresses these risks by providing a high-capacity dust barrier. By maintaining low restriction (initial ΔP), this filter set ensures optimal air-to-fuel ratios, directly impacting fuel economy and engine longevity.
How It Works
A heavy-duty air filter system operates on the principles of interception, diffusion, and inertial impaction. As contaminated air enters the housing, the primary element (WG9X251900611) removes the bulk of the dust. The secondary safety element (WG9X251900621) serves as a fail-safe, preventing contaminants from entering the combustion chamber during primary element replacement or in the event of primary media rupture.
The Advantage of Our Manufacturing
Unlike generic "white-box" filters that use thin, untreated paper, our elements utilize HV (Hollingsworth & Vose) or equivalent high-grade media. This results in a higher Dust Holding Capacity (DHC), meaning longer service intervals and fewer filter changes. For B2B procurement, this translates to a lower Total Cost of Ownership (TCO) compared to standard aftermarket options.
Technical Specifications
| Parameter | Primary Element (WG9X251900611) | Safety Element (WG9X251900621) |
|---|---|---|
| Filter Media | Cured Cellulose / Synthetic Blend | Non-woven Synthetic Fiber |
| Filtration Efficiency | 99.98% | 99.98% |
| Micron Rating | 5-10 Micron (Nominal) | 20-30 Micron |
| End Cap Material | Durable Polyurethane (PU) | Polyurethane / Galvanized Steel |
| Internal Support | Expanded Metal Inner Liner | Reinforced Perforated Mesh |
| Pressure Drop | ≤ 2.5 kPa (Initial) | N/A |
Cross Reference & Compatibility
Cross Reference Part Numbers: SINOTRUK: WG9X251900611, WG9X251900621
Equipment Compatibility: SINOTRUK (HOWO, Sitrak, Steyr), Shacman, Foton. Engines: Weichai WP10, WP12, MC11, MC13.
Application Industries
Frequently Asked Questions
Q: What is the benefit of the radial seal design in the WG9X251900611 filter?
A: A radial seal is a high-compression polyurethane end cap that creates a leak-proof barrier between the clean and dirty sides of the air cleaner housing. It eliminates the need for separate gaskets and reduces the risk of dust bypass.
Q: How do I identify when the SINOTRUK HOWO air filter needs replacement?
A: Replacement should occur when the air restriction indicator on the vehicle dash reaches the red-line limit (typically 20-25 inches of H2O). Visual inspection for "sooting" is also recommended.
Q: Why should I replace the primary and safety elements at different intervals?
A: The primary element is replaced frequently. The safety element should generally be replaced every 3 primary changes, or whenever the primary element has failed.
Q: Are custom branding and packaging options available for bulk orders?
A: Yes. We provide full OEM/ODM services, including private labeling, customized carton printing, and specific media upgrades for extreme-duty applications.
Get a Bulk Order Quote
MOQ: 50 Sets
Lead Time: 7-14 Days
Customization: OEM/ODM Available
Samples: Free Technical Samples
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