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The P550428 Oil Filter is a high‑efficiency lubrication filtration component designed for the diesel engines of SINOTRUK Howo heavy‑duty trucks, ensuring clean oil circulation and optimal engine protection. As a trusted supplier of genuine Sinotruk howo parts, we offer this OEM‑grade oil filter as a direct replacement for the original factory unit. The P550428 oil filter delivers superior contaminant removal, capturing wear particles, soot, and sludge, while maintaining consistent oil flow to critical engine components, even under extreme operating conditions.
Engineered with a high‑density synthetic fiber media and a robust, corrosion‑resistant steel housing, the P550428 oil filter provides excellent filtration efficiency, removing particles down to 10 microns while ensuring low pressure drop. Its advanced anti‑drainback valve prevents dry starts by keeping oil in the filter, and the integrated bypass valve guarantees oil flow even if the filter becomes clogged, protecting the engine from oil starvation.
OEM P550428 • Heavy‑duty application • 10‑micron efficiency • Anti‑drainback valve • Direct OEM fit
The P550428 is a premium oil filter designed specifically for SINOTRUK Howo trucks, including the popular A7, T7H, and mixer chassis, as well as other heavy‑duty models that require this filter specification. This filter plays a critical role in maintaining engine oil cleanliness, removing harmful contaminants such as soot, metal particles, and sludge that accumulate during normal operation.
The P550428 oil filter features a high‑capacity synthetic fiber media that provides excellent filtration efficiency and high dirt‑holding capacity. The media is pleated to maximize surface area, ensuring long service life and low flow restriction. Its steel outer shell is corrosion‑resistant and designed to withstand high burst pressures, making it suitable for high‑performance diesel engines.
An integral silicone anti‑drainback valve prevents oil from draining back into the crankcase when the engine is off, ensuring immediate lubrication at startup and reducing wear. A reliable bypass valve is set to open at a differential pressure of 1.5 bar, ensuring continuous oil flow even if the filter element becomes fully loaded, protecting the engine from oil starvation.
Common signs of a clogged oil filter include reduced oil pressure, increased engine noise, and dirty oil on the dipstick. Replacing the filter with the P550428 restores proper oil flow and filtration, protecting the engine from premature wear and extending its service life. This OEM‑spec filter is the ideal choice for routine oil changes and engine overhauls.
Whether you are performing scheduled maintenance or an emergency oil change, the P550428 Oil Filter delivers the quality, reliability, and filtration performance that SINOTRUK Howo professionals expect.
The P550428 oil filter is specifically designed for SINOTRUK Howo trucks equipped with heavy‑duty diesel engines, including the popular A7, T7H, and mixer chassis, as well as other models that use this filter specification. It is a direct OE replacement and is fully compatible with all factory oil filter heads and mounting threads.
This filter is ideal for applications that demand extended oil change intervals and superior contaminant removal, such as long‑haul transport, construction, mining, and heavy hauling. In these environments, engines operate under high loads, producing significant soot and debris that must be effectively filtered to prevent abrasive wear. The P550428 provides the filtration capacity and efficiency needed to keep oil clean and protect critical engine components.
When replacing the oil filter, it is recommended to also replace the engine oil and inspect the filter housing for any debris or damage. The P550428 is compatible with all standard engine oils, including conventional, synthetic, and blended oils, offering flexibility for fleet operators.
For fleets with multiple Howo trucks, standardizing on the P550428 simplifies inventory management and ensures that the correct filter is always available for scheduled maintenance. Always verify the filter thread and dimensions on your specific truck to confirm compatibility, though the P550428 is the standard oil filter for most Howo heavy‑duty applications.
Replacing the P550428 oil filter is a routine maintenance task that can be performed by most technicians using standard hand tools. Begin by running the engine to warm the oil, then safely raise the vehicle and place a drain pan under the filter area.
Remove the old filter using a filter wrench, turning it counterclockwise. Be prepared for some oil spillage. Clean the filter mounting surface on the engine block, ensuring that the old gasket is completely removed. Apply a thin film of clean engine oil to the new filter’s gasket to ensure a proper seal.
Screw the new P550428 filter onto the mounting stud until the gasket contacts the sealing surface, then tighten it an additional ¾ to 1 full turn by hand (or as specified by the manufacturer). Do not overtighten. Refill the engine with the correct amount and grade of oil, then start the engine and check for leaks around the filter.
For maintenance, replace the oil filter at every oil change interval, typically every 15,000‑20,000 km for heavy‑duty applications, or more frequently in severe service conditions. Always inspect the filter for signs of collapse or excessive debris during removal, as this can indicate internal engine issues. Keep a log of filter changes to track maintenance schedules.
The P550428 oil filter is manufactured in an ISO 9001‑certified facility using advanced pleating, bonding, and assembly processes. The synthetic filter media is sourced from leading global suppliers and is tested for efficiency, dirt‑holding capacity, and burst strength. The steel housing is formed from high‑grade cold‑rolled steel and coated with a durable anti‑corrosion layer.
Each filter undergoes rigorous quality control checks, including media integrity testing, bypass valve calibration, anti‑drainback valve function verification, and leak testing under pressure. Random samples from each production batch are subjected to endurance testing on an engine test stand to validate filtration performance and structural durability over the filter’s service life.
We back the P550428 with a comprehensive 12‑month warranty against material and workmanship defects. Our commitment to quality ensures that every filter delivers the same level of protection and performance as the original equipment, giving you confidence in your engine’s longevity.
Choose genuine filtration for your Howo – choose the P550428 Oil Filter.
The P550428 Oil Filter is a vital component for protecting your Howo’s engine from the damaging effects of contaminants in the engine oil. A clogged or low‑quality filter can lead to oil starvation, increased friction, and costly engine overhauls. By choosing this OEM‑spec filter, you ensure that your engine receives clean, properly filtered oil at all times.
Engineered with high‑efficiency synthetic media, a robust steel housing, and reliable valve systems, the P550428 offers exceptional filtration performance and durability, making it ideal for the demanding conditions of heavy‑duty trucking. Its anti‑drainback and bypass valves provide added protection during cold starts and in the event of filter clogging.
Fleet operators benefit from reduced engine wear, extended oil change intervals, and lower overall maintenance costs. Owner‑operators gain peace of mind knowing their engine is protected by a filter that meets strict OEM standards and is backed by a comprehensive warranty.
Invest in the P550428 and ensure your SINOTRUK Howo’s engine delivers reliable power and long service life.
Order your P550428 today and keep your engine running clean and strong.
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