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The 5287020 Accessory Belt, Tensioner, and Bearing is a comprehensive, high-quality drive system kit designed to restore the auxiliary belt drive of SINOTRUK Howo heavy-duty trucks. As a trusted supplier of genuine Sinotruk howo parts, we offer this OEM-grade kit as a direct replacement for the original components.
The 5287020 kit includes the multi-ribbed serpentine belt, a precision-engineered automatic tensioner, and a high-quality bearing, providing a complete solution to eliminate belt slippage, reduce noise, and ensure reliable power transmission to the alternator, water pump, air conditioning compressor, and power steering pump.
Manufactured with premium EPDM rubber for the belt, durable cast iron or aluminum for the tensioner, and high-grade steel for the bearing, this kit delivers exceptional longevity, smooth operation, and consistent performance under the extreme thermal and mechanical stresses of heavy-duty trucking.
The 5287020 accessory belt kit is an essential maintenance item for preventing unexpected breakdowns and costly component failures. A worn belt, failing tensioner, or noisy bearing can lead to loss of alternator charging, engine overheating, or loss of power steering assistance. This genuine OEM kit restores full drive system integrity and ensures your HOWO truck operates reliably and efficiently.
Complete kit (belt + tensioner + bearing) • High-quality EPDM belt • Durable cast tensioner • Sealed bearing • Extended service life
The 5287020 is a complete accessory drive kit designed for SINOTRUK Howo A7, T7H, and other heavy-duty models equipped with the WD615, D10, D12, or MC series engines. This kit replaces the three most common wear items in the serpentine belt system: the belt, the automatic tensioner, and the idler/tensioner bearing.
Its OEM-grade construction matches the original components’ specifications, ensuring a perfect fit and seamless integration with the engine’s auxiliary drive. The belt is manufactured from high-quality EPDM rubber with advanced fabric reinforcement, providing excellent resistance to heat, ozone, and abrasion.
The multi-ribbed profile ensures efficient power transfer to all driven components. The tensioner is crafted from durable cast iron or high-strength aluminum alloy and features a precision-ground pulley and a long-life sealed bearing. The bearing is designed to withstand high radial loads and rotational speeds, ensuring quiet and vibration-free operation.
The 5287020 kit is engineered to maintain the correct belt tension automatically, compensating for belt stretch and wear over time. This ensures optimal contact between the belt and pulleys, reducing slippage, minimizing noise, and extending the service life of all belt-driven components.
The tensioner’s spring mechanism is calibrated to provide consistent tension across the entire operating range of the engine. Common signs of a failing drive system include squealing or chirping noises from the front of the engine, visible cracks or glazing on the belt, excessive belt play, and intermittent loss of power to the alternator or water pump.
Replacing the entire kit with the 5287020 restores full drive performance, eliminates noise, and prevents the risk of a sudden belt failure that could leave you stranded.
The 5287020 kit is specifically designed for SINOTRUK Howo A7 and T7H series trucks, as well as other heavy-duty models equipped with WD615, D10, D12, and MC series diesel engines. It serves as a direct replacement for the original belt, tensioner, and bearing, and is compatible with all engine variants that use this specific accessory drive configuration.
The kit is suitable for both standard and high-output engine options. This accessory drive kit is essential for applications involving long-haul transport, construction, mining, and heavy hauling, where the engine is subjected to continuous high loads and extreme temperatures.
In these conditions, the belt and tensioner experience accelerated wear, making regular replacement critical to prevent unexpected breakdowns. The 5287020 is engineered to withstand these harsh environments, providing reliable power transmission and reducing the risk of belt-related failures.
When replacing the accessory drive components, it is recommended to inspect the pulleys for damage or misalignment. The 5287020 kit is designed to work with the factory pulleys and mounting hardware, ensuring proper belt tracking and tension. It is also compatible with both standard and heavy-duty alternators, water pumps, and air conditioning compressors.
For fleets with multiple HOWO trucks, this kit standardizes drive system maintenance, simplifying parts inventory and ensuring the correct components are available for scheduled service or emergency repairs. Always verify the engine model and belt routing diagram on your specific truck to confirm compatibility, though the 5287020 is the standard accessory drive kit for the majority of A7 and T7H applications.
Replacing the 5287020 accessory belt, tensioner, and bearing is a moderately complex procedure that requires basic mechanical skills and a set of common hand tools. This work should be performed with the engine off and cool to the touch. Begin by safely securing the vehicle and ensuring the battery is disconnected to prevent accidental starts.
Locate the serpentine belt routing diagram (often found on a sticker under the hood). Use a breaker bar or socket on the tensioner’s center bolt to relieve tension, then remove the old belt. Note the belt routing for reinstallation. Remove the tensioner assembly by unbolting it from the engine block, and carefully detach the old bearing if it is separate from the tensioner.
Clean the mounting surface for the new tensioner and install the new tensioner using the provided bolts, torquing them to the manufacturer’s specification. Install the new bearing (if separate) and ensure it spins freely. Route the new belt from the kit over all the pulleys exactly as shown in the diagram, ensuring the ribs are correctly seated in the grooves.
Release the tensioner to apply tension to the new belt. Verify that the belt is properly seated on all pulleys and that there is no twisting. Start the engine and observe the belt for any unusual noise or vibration – if squealing occurs, re-check belt routing and tension. The 5287020 kit is designed for easy installation, and all components are engineered to work together seamlessly.
For maintenance, regularly inspect the belt for cracks, fraying, or glazing. Check the tensioner and bearing for smooth rotation and any signs of noise or play. The 5287020 components are designed for long service life, but regular visual inspections during routine service are essential. Replace the kit as a complete unit at the manufacturer’s recommended intervals (typically 100,000 km or 5 years) to ensure optimal performance and prevent unexpected failures.
The 5287020 accessory belt, tensioner, and bearing kit is manufactured in an ISO 9001-certified facility using advanced production and quality control processes. The EPDM rubber is sourced from leading global suppliers and is compounded with UV stabilizers and heat-resistant additives to ensure long-lasting performance.
The tensioner’s cast components are produced with high-grade materials and undergo rigorous dimensional inspection. Every kit undergoes comprehensive quality checks, including belt tensile strength testing, tensioner spring force calibration, and bearing noise/vibration testing. The belt is tested for rib profile accuracy and wear resistance.
Random samples from each production batch are subjected to endurance testing on a dynamic belt drive simulator to confirm reliability under real-world conditions. We back the 5287020 with a comprehensive 12-month or 100,000 km warranty against material and workmanship defects.
Our rigorous quality control ensures that every kit delivers the same fit, performance, and durability as the original factory components, giving you confidence in your truck’s accessory drive system. Choose genuine quality for your drive system maintenance – choose the 5287020 Accessory Belt, Tensioner, and Bearing Kit.
The 5287020 Accessory Belt, Tensioner, and Bearing Kit is a critical maintenance solution that ensures the reliability of your HOWO truck’s auxiliary systems. A worn belt, failing tensioner, or damaged bearing can cause catastrophic failure of the alternator, water pump, or air conditioning compressor, leading to costly repairs and unscheduled downtime.
By replacing all three components together with this genuine OEM kit, you eliminate the risk of sequential failures and restore the full performance of your drive system. The 5287020 is manufactured from premium materials with advanced engineering, delivering the durability and reliability required for heavy-duty trucking.
Its precise fit and integrated design ensure that the belt operates quietly and efficiently, reducing strain on other engine components and improving overall fuel economy. This translates to fewer breakdowns, lower maintenance costs, and increased uptime for your fleet.
Fleet operators will benefit from reduced maintenance intervals, lower parts costs, and simplified inventory management. Owner-operators will have peace of mind knowing their engine’s accessory drive is protected by components that meet OEM specifications and are backed by a comprehensive warranty.
Invest in the 5287020 Accessory Belt, Tensioner, and Bearing Kit and ensure your SINOTRUK Howo’s auxiliary systems operate reliably and efficiently. Its superior materials, precision engineering, and proven performance make it the smart choice for professionals who demand the best for their vehicles.
Order your 5287020 today and keep your HOWO truck’s drive system smooth, quiet, and dependable for miles to come.
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