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The 12JSD200T-1707030 Drive Gear is a precision-machined, high-strength gear component designed for the auxiliary housing of SINOTRUK Howo heavy-duty transmissions. As a trusted supplier of genuine Sinotruk howo parts, we offer this drive gear as a direct OEM replacement, manufactured to the exacting standards of the original equipment. The 12JSD200T-1707030 gear features case-hardened alloy steel construction with precision-ground teeth, an optimized involute profile for smooth engagement, and a balanced design to minimize vibration, providing reliable power transmission, extended service life, and consistent performance under the high torque loads, shock conditions, and continuous operation typical of heavy-duty truck transmissions.
This 12JSD200T-1707030 drive gear is a critical component within the auxiliary housing, transmitting engine power to the auxiliary section of the transmission, enabling gear splitting and range changes. Its robust construction and high-quality materials guarantee dependable service, reducing the risk of gear failure and transmission downtime.
OEM direct replacement • Case-hardened alloy steel • Precision-ground teeth • Balanced for smooth operation
The 12JSD200T-1707030 is a drive gear specifically engineered for the auxiliary housing of SINOTRUK Howo 12-speed manual transmissions, commonly used in heavy-duty trucks. It replaces the original equipment gear with identical dimensions, tooth profile, and spline configuration, ensuring a perfect fit and seamless integration.
The gear is manufactured from high-quality alloy steel, case-hardened and tempered to achieve a tough, wear-resistant surface while maintaining a ductile core for shock absorption. The teeth are precision-ground to ensure smooth, quiet operation and minimal backlash, reducing gear whine and extending the life of the mating components. The gear is dynamically balanced to minimize rotational vibrations, which is critical for high-speed transmission operation.
The auxiliary housing drive gear is responsible for transmitting power from the main transmission section to the auxiliary section, which provides the range and splitter functions. Its reliability directly impacts the overall transmission performance, fuel efficiency, and driver comfort. The 12JSD200T-1707030 is designed to withstand the high torque and cyclic loading common in long-haul and off-highway applications.
This gear is a direct OEM replacement, ensuring that the transmission operates with the correct gear ratio and engagement characteristics. Its robust construction and precise manufacturing make it a preferred choice for transmission rebuilds and repairs.
The 12JSD200T-1707030 drive gear is specifically designed for SINOTRUK Howo heavy-duty trucks equipped with the 12JSD200T series manual transmissions, commonly found in models such as Howo A7, T7H, and other heavy-duty variants. It is a direct replacement for the OEM gear, ensuring identical tooth count, pitch, and spline dimensions.
This gear is used in the auxiliary housing (also known as the range/splitter section) of the transmission, where it drives the auxiliary countershaft or planetary gearset. It is suitable for a wide range of applications, including long-haul transport, regional distribution, construction, mining, and logging, where reliable gear engagement and torque transfer are essential for drivetrain durability.
The 12JSD200T-1707030 is typically used during transmission rebuilds or repairs when the original gear shows signs of wear, pitting, or tooth breakage. Always verify the transmission model and auxiliary housing specifications before ordering to ensure correct fitment.
When replacing, inspect the mating gears, bearings, and shafts for wear, and replace any damaged components to ensure optimal transmission performance and longevity.
Installing the 12JSD200T-1707030 drive gear requires advanced mechanical skills, specialized tools, and a thorough understanding of transmission assembly procedures. It is recommended that this work be performed by a qualified transmission technician.
Begin by safely removing the transmission from the vehicle and placing it on a clean workbench. Drain the lubricant and disassemble the auxiliary housing section according to the manufacturer’s service manual. Remove the old gear using the appropriate pullers or press tools, taking care not to damage the shaft or bearings.
Clean the shaft and housing thoroughly, inspecting for wear or damage. If the shaft shows any scoring or out-of-roundness, it must be replaced. Apply a thin coat of clean transmission oil to the new 12JSD200T-1707030 gear and carefully press or slide it onto the shaft, ensuring the splines align and the gear seats fully against the shoulder.
Reassemble the auxiliary housing, install new gaskets and seals, and torque all fasteners to specification. Refill the transmission with the recommended lubricant and perform a function test on a dynamometer or during a road test, checking for unusual noise or vibration.
Regular maintenance includes periodic inspection of transmission oil quality and level, and changing the oil at recommended intervals. If abnormal gear whine or shifting issues arise, inspect the 12JSD200T-1707030 gear for wear or damage and replace as necessary.
The 12JSD200T-1707030 drive gear is manufactured in an ISO 9001-certified facility under stringent quality control standards. Each gear is produced from premium alloy steel and undergoes a comprehensive heat treatment process, including carburizing, quenching, and tempering, to achieve the specified hardness and case depth.
Every gear is 100% inspected for dimensional accuracy, tooth geometry, and surface finish using advanced coordinate measuring machines and gear analyzers. The gear is tested for hardness, microstructure, and tooth contact pattern. Additionally, random samples are subjected to fatigue testing and noise/vibration analysis to ensure they meet OEM performance standards.
Our commitment to quality ensures that the 12JSD200T-1707030 delivers reliable, consistent power transmission, reducing the risk of gear failure, transmission damage, and unplanned downtime. With a comprehensive warranty, this drive gear offers peace of mind for fleet operators and owner-operators alike.
Choose genuine quality for your transmission rebuild – choose the 12JSD200T-1707030.
The 12JSD200T-1707030 drive gear is a critical component that directly affects the shifting performance, power delivery, and durability of your SINOTRUK Howo transmission. Its precision-engineered teeth, robust material, and exacting manufacturing tolerances ensure smooth, reliable gear engagement and long-term dependability.
By choosing this OEM-grade gear, you avoid the risks associated with inferior aftermarket alternatives, such as soft teeth, improper fit, and premature failure. The 12JSD200T-1707030 is engineered to deliver consistent performance, reducing transmission noise, improving shift quality, and extending rebuild intervals.
Fleet operators will benefit from increased transmission reliability, reduced maintenance costs, and improved driver satisfaction. Owner-operators will gain confidence in their truck’s drivetrain, knowing that critical components meet the highest quality standards.
Invest in the 12JSD200T-1707030 Drive Gear and experience the difference that a genuine SINOTRUK Howo part makes. Its proven reliability and engineering excellence make it the smart choice for professionals who demand the best for their vehicles.
Order your 12JSD200T-1707030 today and ensure your transmission performs at its best for miles to come.
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