

The Starter Motor is a critical component that provides the initial cranking torque to start the diesel engine of the Sitrak C7H. This high-performance 24V starter delivers reliable cold-weather starting and consistent engagement, ensuring your truck is ready to work in any condition.
This comprehensive Starter Motor kit includes the Starter 90P55 24V, Hexagon Flange Bolt Q186-M12X35-10.9-MAN183-B1, Washer GB/T97.1-10-GB/T5267.1-镀锌 A2, Nut GB/T6170-M10-A2-70, Starter Terminal Cover, and Corrugated Tube Clamp DN4.5. Every component is engineered to OEM specifications for a perfect fit and reliable performance.
The Starter Motor features a powerful series-wound DC motor with a rated output of 5.5 kW at 24V, delivering a cranking torque of over 180 Nm. Its robust solenoid engagement system ensures positive pinion-to-flywheel meshing, while the sealed construction protects against dirt and moisture. This Starter Motor is designed for long service life, with replaceable brushes and heavy-duty bearings that withstand the high currents of repeated starting cycles.
For complete technical specifications and ordering details, please refer to the official Sinotruk Catalog, which provides comprehensive information on all available variants and compatible truck models for the Starter Motor.
Whether you are replacing a failed starter or upgrading to a higher-performance unit, this Starter Motor kit delivers factory-quality components and a straightforward installation. This Starter Motor is the definitive choice for operators who demand reliable cold-weather starting and long-term durability.
This is the main component of the Starter Motor kit, a 24V DC series-wound starter with a rated output of 5.5 kW. It features a heavy-duty solenoid with a positive engagement mechanism, ensuring reliable pinion-to-flywheel meshing. The starter is equipped with sealed bearings and a robust housing that protects against dust, moisture, and thermal stress, making it ideal for harsh operating environments.
The 90P55 designation indicates its high-torque capability, delivering over 180 Nm of cranking torque, which ensures reliable starting even in sub-zero temperatures. The starter includes replaceable brushes and a serviceable clutch for extended service life.
These high-strength M12 bolts secure the Starter Motor to the engine bell housing. Grade 10.9 with a zinc-nickel coating, they provide reliable clamping force and corrosion resistance. The MAN183-B1 specification ensures compatibility with the C7H engine.
This flat washer is used under the M10 nut to distribute clamping load evenly. With a zinc plating, it provides corrosion resistance and ensures consistent torque retention in the Starter Motor mounting.
This M10 hexagon nut is used to secure the starter electrical connection or a mounting bracket. Made of stainless steel A2-70, it offers excellent corrosion resistance and reliable clamping force in the Starter Motor assembly.
This protective rubber boot covers the main electrical terminal on the Starter Motor, preventing accidental short circuits and protecting the connection from moisture and dirt. It is made of high-temperature EPDM rubber and snaps securely over the terminal.
This clamp secures the wiring harness or protective tubing near the Starter Motor. With a nominal diameter of 4.5mm, it provides a secure hold on cables and hoses, preventing chafing and maintaining neat routing.
The Starter Motor delivers over 180 Nm of cranking torque, ensuring reliable engine starts even in sub-zero temperatures. The powerful series-wound motor and robust solenoid engagement system guarantee consistent performance, reducing the risk of starting failures.
This Starter Motor kit includes every bolt, washer, nut, terminal cover, and clamp required for a full installation. The pre-sized hardware and corrosion-resistant fasteners simplify assembly, reducing downtime and ensuring a secure, vibration-resistant fit.
The Starter Motor is built with sealed bearings, replaceable brushes, and a heavy-duty clutch, ensuring long-term reliability. The robust housing and terminal cover protect against dirt, moisture, and thermal stress, reducing the risk of premature failure.
The Starter Motor is manufactured to the exact OEM specifications, guaranteeing a perfect fit on the Sitrak C7H. The precision-machined mounting flange and correct gear engagement ensure reliable meshing with the flywheel, reducing the risk of starter drive damage.
Our online catalog provides comprehensive access to genuine SINOTRUK parts for all major vehicle lines — including HOWO, Sitrak, Steyr, and Yellow River series trucks. You can browse detailed specifications, original part numbers, and exploded-view diagrams for every assembly. Whether you are performing routine maintenance or planning a major overhaul, the catalog helps you quickly identify the correct components for your vehicle. When you become a SINOTRUK customer, we offer complimentary full‑access catalog services, ensuring you always have the latest product data and interchangeability information at your fingertips to support efficient fleet management and accurate parts ordering.