The fan pulley is a critical component in your engine’s cooling system, responsible for driving the cooling fan and ensuring efficient heat dissipation during heavy-duty operation. The 612600061521 Fan Pulley from HOWO is engineered to deliver exceptional rotational balance, superior wear resistance, and a perfect factory fit, guaranteeing that your cooling system operates at peak efficiency under the most demanding conditions. As a vital Howo/Sitrak truck parts component, this fan pulley is manufactured from high-grade cast iron with precision-machined surfaces and dynamically balanced to exacting tolerances, providing a smooth, vibration-free drive for the fan belt and ensuring consistent airflow through the radiator. Whether you are replacing a worn pulley or performing a full cooling system service, the 612600061521 guarantees a flawless OEM fit, extended belt life, and reliable engine cooling – making it the trusted choice for professional workshops and fleet operators worldwide.
The fan pulley is the mechanical interface that transfers engine power to the cooling fan, ensuring that your radiator receives the necessary airflow to dissipate heat. The 612600061521 is specifically designed to provide consistent, vibration-free rotation, reducing stress on the fan belt and bearing assemblies. A worn or damaged fan pulley can lead to belt slippage, overheating, and premature failure of the fan clutch or water pump. HOWO has engineered this pulley with a precision-ground V-groove profile that ensures maximum belt grip and minimal wear, while the dynamically balanced design eliminates harmful vibrations that can cause noise and reduce component life. With the 612600061521, you restore the original cooling efficiency, extend the service life of your fan drive system, and ensure that your engine maintains optimal operating temperatures even under the most extreme loads.
Dynamic Balance
Zero Vibration
Wear Resistant
Cast Iron
OEM Grade
Genuine HOWO
Heat Resistant
High Stability
The 612600061521 fan pulley is manufactured to the highest OEM standards, incorporating advanced materials and precision engineering. Below are the complete technical specifications for this essential cooling system component.
| Parameter | Specification | Detail |
|---|---|---|
| OEM Number | 612600061521 | Exact Match |
| Part Name | Fan Pulley | HOWO Genuine |
| Brand | HOWO | Original Equipment |
| Application | HOWO T7H / A7 / MC11/MC13 | Cooling fan drive |
| Material | High-grade cast iron | Corrosion-resistant |
| Outer Diameter | 180 mm | Precision machined |
| Belt Groove Type | Single V-belt | Standard fitment |
| Center Bore | 30 mm | Keyway included |
| Balancing | Dynamic balancing (G6.3) | Smooth operation |
| Weight | 1.5 kg | Substantial |
| Warranty | 12 Months | Manufacturer Guarantee |
The 612600061521 fan pulley is the result of advanced casting and precision machining processes that ensure consistent quality and performance. The high-grade cast iron construction provides excellent wear resistance and thermal stability, allowing the pulley to maintain its dimensional accuracy even under the high temperatures and continuous operation encountered in heavy-duty applications. The V-groove profile is precision-ground to ensure maximum contact with the fan belt, reducing slippage and extending belt life. The pulley is dynamically balanced to G6.3 grade, ensuring that it rotates without inducing harmful vibrations that could damage the fan clutch or water pump bearings. Each pulley is inspected for dimensional accuracy, surface finish, and balance, guaranteeing that the 612600061521 meets HOWO’s stringent quality standards. This meticulous engineering ensures that your fan drive system operates smoothly and reliably, mile after mile.
The 612600061521 fan pulley is specifically designed for HOWO heavy-duty trucks equipped with MC11 and MC13 engine families, including T7H, A7, and derivative models. It directly replaces the original pulley with identical dimensions, bore size, and keyway configuration, ensuring a straightforward installation without modifications. The pulley is compatible with all factory-specified fan belts and clutch assemblies, and it works seamlessly with the original equipment fan drive system. This fan pulley is also compatible with many Sinotruk and other commercial vehicles that share the same cooling system architecture. To confirm fitment, always cross-reference the OEM number on your existing pulley with 612600061521. If they match, this component will integrate seamlessly. Keeping this pulley in your spare parts inventory enables rapid cooling system repairs, minimising downtime and preserving the performance and reliability of your engine’s cooling system.
HOWO T7H
Primary Fitment
HOWO A7
Also Compatible
MC11/MC13
Engine Series
Direct Replacement
No Modifications
Replacing a worn or damaged fan pulley with the 612600061521 immediately restores the efficiency and reliability of your engine’s cooling system. The precision-ground V-groove ensures maximum belt grip, eliminating slippage that can cause overheating and reduced fan speed. The dynamically balanced design reduces vibration, extending the life of the fan belt, fan clutch, and water pump bearings. The robust cast iron construction provides excellent resistance to wear and thermal distortion, ensuring consistent performance over time. The improved cooling system efficiency helps maintain optimal engine temperatures, reducing the risk of overheating and extending the service life of your engine. For fleet operators, a reliable fan pulley reduces cooling system-related breakdowns, lowers maintenance costs, and helps maintain the performance and efficiency of your vehicles. By investing in the 612600061521, you ensure that your HOWO truck’s cooling system operates at its best, mile after mile.
Installing the 612600061521 fan pulley is a straightforward procedure. Begin by safely supporting the vehicle and removing the fan belt. Using a suitable puller, carefully remove the old pulley from the fan clutch or water pump shaft. Clean the shaft and inspect the keyway for any damage. Position the new pulley onto the shaft, ensuring that the key is correctly aligned and the pulley is fully seated. Install the retaining bolt and torque it to the manufacturer’s specification. Reinstall the fan belt and adjust tension to the correct specification. Start the engine and check for proper belt tracking and any unusual noises. Periodically inspect the pulley for signs of wear or damage, and replace the fan belt at the recommended intervals. With proper installation, the 612600061521 will provide years of reliable service.
Pro Tip: When replacing the fan pulley, it is recommended to also inspect the fan belt for signs of cracking or glazing. Replacing the belt and pulley together ensures the entire cooling system drive operates optimally. The 612600061521 is designed to work with OEM-spec belts; using genuine components guarantees the best results.
Genuine HOWO components are engineered to the highest standards, and the 612600061521 fan pulley is no exception. Aftermarket pulleys often use inferior materials, imprecise machining, or poor balancing, leading to belt noise, premature wear, and potential failure. HOWO’s pulley is manufactured using the same materials and processes as the original equipment, guaranteeing a perfect fit and reliable performance. By choosing the 612600061521, you benefit from HOWO’s rigorous testing, including dynamic balancing, dimensional accuracy, and durability tests. This ensures that the pulley meets the demanding requirements of heavy-duty trucking. Moreover, genuine parts are backed by a comprehensive warranty and supported by HOWO’s global network, giving you confidence in your purchase.
OEM Authentic
Factory Quality
Long Service
Extended Life
Global Standard
Trusted Worldwide
Q: Which vehicles use the 612600061521 fan pulley?
A: The 612600061521 is designed for HOWO T7H, A7, and other models with MC11/MC13 engines, as well as many Sinotruk trucks with the same cooling system.
Q: What are the symptoms of a failing fan pulley?
A: Belt squeal or chirping, visible belt wear, excessive fan vibration, and overheating due to reduced fan speed are common indicators.
Q: Is the pulley compatible with both viscous and direct-drive fans?
A: Yes, the 612600061521 is designed to work with both viscous fan clutches and direct-drive systems, depending on your vehicle’s configuration.
Q: How do I verify the correct part?
A: Check the OEM number on your existing pulley. If it matches 612600061521, this is the exact replacement. Consult your vehicle’s parts manual for additional confirmation.
Order your 612600061521 Fan Pulley today! Explore our complete selection of genuine HOWO and Sinotruk cooling system components at Howo/Sitrak truck parts and keep your engine running cool and efficiently.
The 612600061521 Fan Pulley from HOWO is a testament to precision engineering and uncompromising quality. By choosing this genuine component, you ensure that your engine’s cooling system delivers the reliability, efficiency, and durability required for modern heavy-duty trucking. Whether you are a professional mechanic or a fleet manager, this fan pulley offers the performance, reliability, and exact fit that you can count on. Trust HOWO – the benchmark for excellence in heavy-duty truck components – and experience the difference that genuine quality makes.
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