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The P164378 Hydraulic Filter is a high‑efficiency filtration component designed for the hydraulic systems of SINOTRUK Howo heavy‑duty trucks, including power steering, tipping cylinders, and suspension circuits. As a trusted supplier of genuine Sinotruk howo parts, we offer this OEM‑grade hydraulic filter as a direct replacement for the original factory unit. The P164378 hydraulic filter ensures clean, contaminant‑free fluid circulation, protecting pumps, valves, and actuators from abrasive wear and extending component life under the most demanding operating conditions.
Manufactured with a high‑strength steel housing and a precision‑pleated synthetic media, the P164378 hydraulic filter provides outstanding particle capture, removing contaminants down to 10 microns while maintaining low pressure drop. Its robust bypass valve ensures uninterrupted flow during cold starts or when the filter element reaches its dirt‑holding capacity, preventing cavitation and pump damage. The filter is built to withstand the extreme pressures, temperature fluctuations, and vibration levels typical of heavy‑duty truck hydraulic circuits.
OEM P164378 • Hydraulic system protection • 10‑micron efficiency • Synthetic media • Bypass valve integrated
The P164378 is a premium hydraulic filter designed specifically for SINOTRUK Howo trucks, including the A7, T7H, and mixer chassis, as well as other heavy‑duty vehicles that rely on hydraulic power for steering, lifting, and suspension functions. This filter plays a critical role in maintaining fluid cleanliness, removing wear particles, silicon dust, and other contaminants that can cause valve sticking, pump scoring, and premature seal failure.
The P164378 hydraulic filter features a high‑density pleated synthetic medium that offers excellent dirt‑holding capacity and filtration efficiency, with an absolute rating of 10 microns. The media is reinforced with a polyester backing to withstand pressure surges and ensure structural integrity. Its steel outer shell is corrosion‑resistant and designed to handle operating pressures up to 25 bar, making it suitable for both low‑pressure return lines and medium‑pressure suction applications.
An integral bypass valve is set to open at a differential pressure of 2.5 bar, ensuring that hydraulic fluid continues to flow even when the filter element is fully loaded, preventing cavitation and pump damage. The filter also includes a robust anti‑drainback valve that retains fluid in the housing when the engine is off, allowing immediate pressure buildup on startup.
Common signs of a clogged hydraulic filter include sluggish steering, slow cylinder operation, unusual whining noises from the pump, and increased system temperature. Replacing the filter with the P164378 restores full system responsiveness, reduces component wear, and prolongs hydraulic oil life. This OEM‑spec filter is the ideal choice for preventative maintenance and hydraulic system overhauls.
Whether you are performing routine servicing or troubleshooting a hydraulic performance issue, the P164378 Hydraulic Filter delivers the reliability, efficiency, and durability that SINOTRUK Howo professionals expect.
The P164378 hydraulic filter is specifically designed for SINOTRUK Howo trucks equipped with hydraulic power steering, tilt/telescope steering columns, hydraulic suspension, and tipping systems for dump bodies and concrete mixers. It is a direct OE replacement and is fully compatible with all factory filter heads and fluid connections.
This filter is essential for applications where hydraulic systems operate under high stress, such as construction, mining, and heavy hauling. In these environments, hydraulic fluid can quickly become contaminated with wear particles, silicon dust, and moisture, leading to valve sticking, pump cavitation, and reduced system efficiency. The P164378 provides the filtration performance needed to maintain fluid cleanliness to ISO 4406 standards.
When replacing the hydraulic filter, it is recommended to inspect the filter head, fluid lines, and reservoir for signs of sludge or metal debris. The P164378 is compatible with all standard hydraulic fluids, including mineral oils, synthetic oils, and biodegradable fluids, offering versatility for fleet operators.
For fleets with multiple Howo trucks, standardizing on the P164378 simplifies inventory management and ensures the correct filter is available for scheduled services. Always verify the filter thread and dimensions on your specific truck to confirm compatibility, though the P164378 is the standard hydraulic filter for most Howo heavy‑duty models.
Replacing the P164378 hydraulic filter is a straightforward procedure that can be performed by most technicians using standard hand tools. Begin by relieving the hydraulic system pressure and placing a suitable container under the filter to catch any spilled fluid.
Remove the old filter by turning it counterclockwise with a filter wrench. Clean the mounting surface on the filter head, ensuring the old gasket is completely removed. Apply a thin film of clean hydraulic fluid to the new filter’s gasket to ensure a proper seal. Screw the new P164378 filter onto the head until the gasket contacts the sealing surface, then tighten an additional ¾ to 1 full turn (or to the manufacturer’s torque specification of 18‑22 Nm).
After installation, top up the hydraulic fluid reservoir to the correct level, then start the engine and operate the steering or hydraulic functions to purge air from the system. Check for leaks around the filter and inspect the fluid level again.
For maintenance, replace the hydraulic filter at every recommended service interval, typically every 1,000 operating hours or annually, whichever comes first. In severe duty applications (dusty or wet environments), more frequent replacement may be necessary. Regularly check the filter condition by inspecting the pressure differential gauge if equipped, or by monitoring system response. Keep a log of filter changes to track maintenance schedules and identify trends in fluid contamination.
The P164378 hydraulic 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 that withstands salt spray and chemical exposure.
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 a hydraulic test bench to validate filtration performance, pressure fatigue resistance, and structural durability over the filter’s service life.
We back the P164378 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 hydraulic system’s reliability.
Choose genuine filtration for your Howo – choose the P164378 Hydraulic Filter.
The P164378 Hydraulic Filter is a critical component for maintaining the performance and longevity of your Howo’s hydraulic system. Contaminated fluid can cause pump wear, valve sticking, and reduced system efficiency, leading to costly repairs and downtime. By replacing your filter with this OEM‑spec unit, you ensure that your hydraulic fluid remains clean, protecting all downstream components.
Engineered with a high‑efficiency synthetic media and a robust steel housing, the P164378 offers outstanding particle capture, high flow capacity, and reliable bypass protection, making it ideal for the demanding conditions of heavy‑duty trucking. Its integrated anti‑drainback and bypass valves ensure consistent performance and protection against cold‑start and clogging scenarios.
Fleet operators benefit from reduced hydraulic component failures, improved system responsiveness, and lower maintenance costs. Owner‑operators gain peace of mind knowing their steering, lifting, and suspension systems are protected by a filter that meets strict OEM standards and is backed by a comprehensive warranty.
Invest in the P164378 and ensure your SINOTRUK Howo’s hydraulic system delivers reliable performance and long service life.
Order your P164378 today and keep your hydraulic system running smoothly.
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