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Maximum engine cleanliness and extended oil change intervals – The OEM WG9725190122 Oil Filter Element is engineered to trap microscopic contaminants, soot, and sludge, ensuring that your diesel engine receives only perfectly clean lubricating oil.
With a high-efficiency multilayer media and robust construction, this filter dramatically reduces wear on bearings and turbochargers. For guaranteed compatibility and optimum performance, always choose genuine Sinotruk Homan parts.
The WG9725190122 meets or exceeds original equipment specifications for HOWO, SHACMAN, and other heavy commercial vehicles. Its advanced filter media provides high dirt-holding capacity, low flow restriction, and reliable bypass valve protection during cold starts.
The WG9725190122 Oil Filter Element utilizes a high-density synthetic/cellulose blend media that achieves 99.5% filtration efficiency at 20 microns (ISO 4548-12). Unlike standard filters that rely solely on depth loading, this element combines surface and depth filtration.
It captures both hard particles and gelatinous sludge. The result is extended oil life, reduced engine wear, and consistent oil pressure across all operating conditions. Fleet managers using the WG9725190122 report up to 25% longer drain intervals without compromising engine protection.
Multilayer synthetic microglass + cellulose captures 99.5% of particles ≥20µm, protecting critical engine components from abrasive wear.
Calibrated bypass valve opens at 2.5 bar, ensuring continuous oil flow even when the filter is clogged, preventing oil starvation.
With a capacity of >45 grams of test dust (ISO 12103-1), the WG9725190122 provides long service life even in dusty environments.
| OEM Number | WG9725190122 |
| Product Name | Oil Filter Element (Full-Flow Type) |
| Brand | SINOTRUK Homan |
| Media Type | Synthetic/cellulose blend resin-impregnated |
| Filtration Efficiency | 99.5% @ 20µm (ISO 4548-12) |
| Dirt Holding Capacity | ≥ 45 grams (ISO 12103-1 A4 coarse test dust) |
| Bypass Valve Cracking Pressure | 2.5 bar ±0.3 bar |
| Max Flow Rate | 200 L/min (for heavy-duty diesel engines) |
| Thread Size | M30 x 1.5 (standard HOWO/ SHACMAN) |
| Outer Diameter x Height | 110 mm x 245 mm |
| Gasket Material | Nitrile rubber (NBR), -30°C to +120°C |
| Max Operating Temperature | 120°C (248°F) |
| End Caps Material | Epoxy-coated steel, anti-corrosion |
| Compliance | ISO 9001, ISO 14001, SAE J1858 |
The WG9725190122 Oil Filter Element is constructed with deep-drawn steel end caps that are mechanically clinched to the media pack, eliminating glue degradation issues common in cheap filters.
The center tube is made of high-strength perforated steel, designed to withstand differential pressures up to 8 bar without collapsing. The filter media features a progressive density gradient: larger voids near the surface to capture bigger particles and tighter pores in the depth for fine contaminants.
This design ensures low initial pressure drop while maximizing total dirt capacity. Every unit is tested for burst strength and pleat integrity.
Unlike standard cellulose-only elements, the WG9725190122 uses a proprietary blend of synthetic microfibers and treated cellulose. The synthetic component provides excellent resistance to oil degradation and high temperatures.
The cellulose adds stiffness and water-absorbing capacity. The media is impregnated with a phenolic resin that locks fibers in place, preventing media migration even during high-flow surges. Each batch is tested for pore uniformity.
The WG9725190122 directly replaces OEM filters on SINOTRUK HOWO A7, T7H, SHACMAN F3000, and many Cummins, Weichai, and MAN engines using the same thread and sealing dimensions.
Its standard dimensions (110x245mm) make it a drop-in replacement for filter heads with M30x1.5 thread. Always lubricate the new gasket with clean engine oil before installation, tighten by hand until the gasket contacts, then further 3/4 turn. Do not overtighten.
This element is compatible with all conventional diesel engine oils (15W-40, 10W-30, 5W-40) and synthetic blends.
To correctly install the WG9725190122 Oil Filter Element, follow these steps: 1) Run engine to warm oil, then drain old oil and remove the old filter.
2) Clean the filter mounting surface thoroughly, removing old gasket residue. 3) Apply a thin film of clean engine oil to the new filter’s rubber gasket.
4) Screw the new WG9725190122 onto the filter head until the gasket contacts the base, then tighten an additional 3/4 turn (or to 25 Nm).
5) Refill engine with specified oil quantity, run engine and check for leaks around the filter seal. 6) After first run, verify oil level and top up if necessary.
Always replace the element at scheduled intervals or sooner if oil analysis indicates high contamination.
The WG9725190122 Oil Filter Element is designed for a service interval of up to 50,000 km under normal highway conditions, or 500 engine hours for off-highway applications.
For dusty environments (mining, construction), reduce interval to 250 hours. Always replace the filter at every oil change. Never attempt to clean and reuse the element — the media is not washable.
If the bypass valve remains open for extended periods (indicated by a sudden drop in oil pressure), replace the filter immediately, as it may be clogged beyond capacity.
The WG9725190122 is manufactured in an IATF 16949 certified facility, specifically for heavy-duty engine applications. Each production lot undergoes multi-stage testing.
Tests include: (1) Bubble point test to verify media integrity, (2) Multi-pass filtration test per ISO 4548-12 to confirm efficiency and capacity, (3) Burst pressure test (minimum 10 bar differential).
Also performed: (4) Flow fatigue test (100,000 pressure pulses), and (5) Vibration test simulating real engine operation. The filter meets OE specifications for cold start bypass valve performance at -30°C.
A Brazilian mining fleet operating 85 Volvo and HOWO dump trucks switched to the WG9725190122 Oil Filter Element. After 2,000 hours of operation, oil analysis showed a 40% reduction in silicon and iron particles compared to the previous brand.
Engine tear-downs at 15,000 hours revealed minimal bore polishing and bearing wear. A logistics company in Germany testing the WG9725190122 achieved 60,000 km oil change intervals when using full-synthetic oil, significantly lowering operating costs per truck.
Each WG9725190122 Oil Filter Element is packed in a color-branded, crush-proof carton with a moisture barrier inner bag. The end cap of the filter is engraved with a laser-etched batch number and SINOTRUK Homan logo.
A QR code sticker on the box links to the online authenticity verification page. Counterfeit filters often lack the proper anti-drainback valve or use flimsy center tubes.
Genuine WG9725190122 elements have a distinct resin-coated media that appears dark brown with uniform pleat spacing. Purchase only from authorized distributors to guarantee performance.
Summary: The SINOTRUK Homan Oil Filter Element (OEM WG9725190122) delivers superior engine protection, high dirt-holding capacity, and reliable bypass valve operation. Upgrade your fleet’s oil filtration to genuine OEM quality — the proven choice for maximum engine longevity.
If you have any questions about our products, services, or anything related to what we offer, please don’t hesitate to leave us a message—our dedicated team is always ready to provide prompt and helpful responses to address your concerns. What’s more, when you become our valued customer, we’re delighted to offer you complimentary catalog services, giving you access to detailed, up-to-date information on our full range of products, specifications, and offerings to help you make informed decisions.
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