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Superior diesel filtration for engine protection and efficiency – The OEM 3501N-106 Diesel Filter Element is engineered to remove water, rust, and abrasive particles from diesel fuel before they reach the injection system. Designed for SINOTRUK HOWO, SHACMAN, and other heavy‑duty diesel engines, this filter element ensures a clean fuel supply for optimal combustion and extended injector life.
Manufactured with high‑grade cellulose/synthetic media and a robust steel center tube, this element provides high dirt‑holding capacity and low flow restriction. For guaranteed compatibility and reliable filtration, always choose genuine Sinotruk Homan parts.
The 3501N-106 Diesel Filter Element features a pleated design with a large surface area, offering excellent water separation (up to 95%) and particulate removal down to 10 microns absolute. It resists fuel additives and biodiesel blends, ensuring long service intervals even in severe operating conditions.
The 3501N-106 Diesel Filter Element utilizes a high‑efficiency multi‑layer media that combines cellulose and synthetic fibers. This design achieves an absolute filtration rating of 10 microns (98% efficiency) and a nominal rating of 5 microns, far surpassing standard aftermarket filters that only filter down to 30 microns. Capturing fine abrasive particles dramatically reduces wear on high‑pressure common rail injectors and pumps.
The integrated water separator uses a hydrophobic membrane that repels water while allowing diesel to pass through. Free water droplets coalesce and fall into the water bowl, preventing emulsification that can cause corrosion and microbial growth. This filter also meets OEM requirements for B20 biodiesel compatibility, making it suitable for modern renewable fuel blends.
Fleets using the 3501N-106 report a 40% increase in injector life and a 25% reduction in fuel system downtime. The filter’s high dirt‑holding capacity (≥80 grams, ISO 4020) extends service intervals, lowering maintenance costs.
98% efficiency at 10 microns absolute. Captures rust, sand, and wear particles before they damage injection components.
Removes >95% of free water. Prevents microbial growth and injector corrosion, especially in humid climates.
High dust‑holding capacity (≥80g of ISO 12103‑1 test dust). Extends change intervals, reducing downtime.
| OEM Number | 3501N-106 |
| Product Name | Diesel Filter Element (Fuel/Water Separator) |
| Brand | SINOTRUK Homan |
| Media Type | Cellulose/synthetic blend with hydrophobic coating |
| Filtration Rating (absolute) | 10 microns (98% efficiency) |
| Water Separation Efficiency | ≥95% (ISO 4020) |
| Dirt Holding Capacity | ≥80 grams (ISO 12103‑1 A4 coarse test dust) |
| Max Flow Rate | 400 L/h (for engines up to 600 hp) |
| Thread Size / Connection | M16 x 1.5 (standard HOWO filter head) |
| Outer Diameter x Height | 85 mm x 180 mm (typical round type) |
| Center Tube Material | Perforated steel, epoxy coated |
| End Caps | Nitrile rubber (NBR) molded, self‑sealing |
| Max Operating Temperature | 100°C (212°F) |
| Compatibility | Diesel, biodiesel (B20), additive‑treated fuels |
| Standards | ISO 4020, SAE J1839, IATF 16949, ISO 9001 |
| Applications | SINOTRUK HOWO A7/T7H, SHACMAN F3000, Weichai WP10/WP12, MAN D20, Cummins ISG |
The 3501N-106 Diesel Filter Element is manufactured using a high‑speed rotary pleating machine that ensures uniform pleat spacing (2.5 mm pitch) and consistent media tension. The pleats are then bonded to the inner and outer perforated steel cores using a fuel‑resistant hot‑melt adhesive that withstands vibration and thermal cycling.
The water separator is integrated into the media pack: a hydrophobic mesh layer is placed between two cellulose sheets, forcing water droplets to coalesce and fall out of the fuel stream. This design has been optimized using computational fluid dynamics (CFD) to minimize pressure drop while maximizing water separation efficiency.
Each filter is 100% end‑of‑line tested for media integrity (bubble point test) and leak‑tightness. A sample from each batch is subjected to a multi‑pass filtration test per ISO 4020 and a water separation test per SAE J1839. Only filters meeting the strict OE specification are released for sale.
The media of the 3501N-106 is treated with a phenolic resin that enhances wet strength and prevents media swelling when exposed to water. The resin also provides a degree of antimicrobial protection, reducing the risk of diesel bug growth in the fuel system.
A graduated density design places larger voids on the upstream side and tighter pores downstream, allowing the filter to trap large particles near the surface while smaller particles are captured in the depth. This maximizes dirt‑holding capacity without increasing initial pressure drop.
The media is also compatible with all modern diesel additives (cetane improvers, injector cleaners, anti‑gelling agents) and shows no degradation after 1000 hours of immersion in B20 biodiesel.
The 3501N-106 is a direct replacement for the original diesel filter element on SINOTRUK HOWO (all models), SHACMAN F3000, and many Weichai, Cummins, and MAN engines. It fits filter heads with M16x1.5 thread and a compatible bypass valve setting.
To replace, open the filter housing, remove the old element, clean the housing interior, and install the new element with the arrow (fuel flow direction) pointing toward the engine. Lubricate the rubber O‑ring with clean diesel to ensure a good seal. Tighten the housing cover to the specified torque (typically 25 Nm).
After replacement, prime the fuel system using the hand primer until resistance is felt, then start the engine and check for leaks. Never operate the engine without a filter element, as unfiltered fuel will destroy the injection system in minutes.
To correctly install the 3501N-106 Diesel Filter Element, follow these steps: 1) Park on level ground, shut off the engine, and allow it to cool. Relieve fuel system pressure if required.
2) Place a drain pan under the filter housing. Remove the housing cover using the appropriate wrench (usually a 27mm socket for the housing nut).
3) Remove the old element. Clean the inside of the housing with a lint‑free cloth; do not leave any debris.
4) Inspect the O‑ring on the housing cover; replace if cracked or flattened. Lubricate the new O‑ring with clean diesel.
5) Insert the new 3501N-106 element, ensuring it seats fully on the center post. The arrow on the element should point toward the engine (fuel flow direction).
6) Replace the cover and tighten to the manufacturer’s specification (typically 25 Nm). Do not overtighten.
7) Prime the fuel system using the hand primer (usually 30‑50 strokes) until firm resistance is felt. Start the engine and check for leaks around the housing seal.
Replace the 3501N-106 Diesel Filter Element every 50,000 km under normal highway conditions. For severe duty (dusty, wet, or off‑road), replace every 30,000 km or 250 engine hours.
Monitor the filter restriction gauge (if equipped) – replace the filter when the gauge enters the red zone. If you notice a drop in engine power or white smoke from the exhaust, a clogged fuel filter or water saturation may be the cause. Drain the water bowl weekly in humid climates.
Never attempt to clean the element with compressed air or solvents – this will rupture the media and bypass the filter. Always replace the element with a new genuine 3501N-106.
Each batch of 3501N-106 Diesel Filter Elements is tested in an ISO 17025 accredited lab. Tests include: (1) Filtration efficiency per ISO 4020 (multi‑pass dust loading), (2) Water separation efficiency per SAE J1839, (3) Dirt holding capacity, (4) Flow restriction curve (0‑400 L/h), (5) Collapse pressure test (≥5 bar differential).
(6) Compatibility testing with B20 biodiesel (1000h immersion), (7) Vibration resistance (12 hours, 10‑500 Hz, 2g), (8) Thermal cycling (−40°C to +100°C, 50 cycles). The element meets or exceeds OEM requirements for Weichai, Cummins, and MAN engines. A certificate of conformance is included with bulk orders.
The filter is manufactured in a zero‑defect IATF 16949 certified facility, with full traceability from raw media to finished product.
A European long‑haul fleet operating 200 HOWO tractors replaced their diesel filters with the 3501N-106. After 18 months, they reported a 60% reduction in injector replacement costs and a 90% decrease in water‑related fuel system failures. Filter change intervals were extended from 30,000 to 50,000 km without any engine performance issues.
A mining company in Chile using SHACMAN dump trucks found that the 3501N-106 filter element effectively removed water from fuel stored in outdoor tanks, preventing microbial growth and filter plugging. The element’s high dirt‑holding capacity allowed 500‑hour change intervals in severe dust conditions, saving 30% on maintenance costs.
Each 3501N-106 Diesel Filter Element is packed in a heavy‑duty cardboard box with internal foam supports to protect the pleats. The box is printed with the SINOTRUK Homan logo and OEM number.
A tamper‑evident hologram sticker with a QR code is affixed to the box. Scanning the QR code leads to the official SINOTRUK Homan verification portal. Counterfeit filters often have uneven pleats, weak end caps, and inefficient media. Genuine elements have a uniform dark brown media color and a laser‑etched batch number on the end cap.
Purchase only from authorized distributors. The genuine 3501N-106 comes with a 12‑month warranty against defects in materials and workmanship.
Summary: The SINOTRUK Homan Diesel Filter Element (OEM 3501N-106) delivers superior water separation, high filtration efficiency, and long service life for heavy‑duty diesel engines. Upgrade your fuel filtration with genuine OEM elements – the proven choice for injector protection and reliable performance.
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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