The part is a critical driveline component that transmits engine torque from the transmission to the rear axle, ensuring smooth and reliable power delivery in the Sitrak C7H heavy-duty truck. This precision-engineered kit includes the coupling flange and universal joint assembly.
This complete Driveshaft kit includes The part Coupling Flange (70178/XS180/112) and the 70178 Universal Joint Assembly (Standard Type). Every component of this Driveshaft assembly is manufactured to OEM specifications, guaranteeing a perfect fit and reliable operation under the most demanding conditions.
The part coupling flange is forged from high-strength alloy steel and precision-machined to ensure exact alignment with the transmission and axle yokes. The universal joint features needle bearings and hardened cross shafts that provide smooth articulation and high torque capacity. This Driveshaft kit is designed to handle the extreme torsional loads of the C7H powertrain while maintaining exceptional durability.
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 part.
Whether you are performing a driveline overhaul or replacing worn components, this Driveshaft kit delivers factory-quality performance and reliability. This Driveshaft set includes all necessary parts for a straightforward, professional installation.
This precision-forged flange is the primary interface between The part and the transmission or axle output yoke. Manufactured from high-strength chromium-molybdenum steel with a tensile strength of 950 MPa, it features an XS180 spline profile and a 112mm bolt circle diameter. The flange is induction-hardened to ensure wear resistance at the spline and bearing surfaces, and it includes a corrosion-resistant zinc-nickel coating. In The part assembly, this flange provides a secure, backlash-free connection that efficiently transfers torque while accommodating minor angular misalignments.
This is the core articulation component of The part, enabling smooth power transmission through angular changes. The assembly includes a hardened steel cross shaft with four precision-ground trunnions, each fitted with needle roller bearings and nitrile rubber seals. The standard-type joint is rated for a static torque capacity of 1,800 Nm and a maximum operating angle of 15 degrees. It features grease nipples for easy lubrication and is designed to withstand high shock loads common in heavy-duty truck applications. In The part system, this universal joint ensures smooth rotation and minimal vibration, contributing to driveline longevity and driver comfort.
The part coupling flange is forged from high-strength alloy steel and precision-machined to exact tolerances, ensuring perfect fitment and reliable torque transfer. The universal joint uses hardened steel components and premium needle bearings for extended service life and minimal maintenance.
The part universal joint is designed with a cross and needle-bearing arrangement that allows smooth articulation at angles up to 15 degrees. This reduces driveline vibration and shock loads, protecting the transmission and axle components from premature wear.
This Driveshaft kit includes both the coupling flange and the universal joint assembly, providing all the critical components needed for a full driveline coupling overhaul. The pre-matched parts ensure compatibility and simplify the installation process, saving time and reducing downtime.
All Driveshaft components are manufactured to strict OEM standards, guaranteeing a perfect fit on the Sitrak C7H. The advanced zinc-nickel coating on the flange and the corrosion-resistant seals on the universal joint provide excellent protection against moisture, road salt, and chemicals, ensuring long-term reliability.
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.
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