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The genuine steering gear with OEM number 1316303065 is engineered to deliver exceptional handling, precise steering response, and unmatched reliability for SINOTRUK Sitrak heavy-duty trucks. Designed as a direct replacement, this recirculating-ball steering gear ensures perfect integration with the vehicle’s hydraulic system and chassis. As a critical safety component within the Sinotruk sitrak parts portfolio, the 1316303065 steering gear guarantees factory-grade performance, reduced steering effort, and extended service life under the most demanding operating conditions.
The 1316303065 steering gear is not a standard aftermarket component; it is a precision‑engineered assembly that meets Sinotruk’s strict OEM specifications for the Sitrak series. This recirculating-ball design features a hardened worm shaft, high‑capacity ball nuts, and a precisely machined sector shaft that together provide smooth, responsive steering with minimal free play. In heavy haulage and off-road applications, steering precision directly impacts driver safety and tire wear. The genuine 1316303065 steering gear ensures consistent hydraulic power assistance, eliminating the jerky movements often associated with inferior replacements.
Extensive endurance tests on Sitrak C7H and C9H chassis have proven that using the original 1316303065 reduces steering system failures by over 65% compared to generic units. Its optimized internal clearances and superior sealing technology prevent fluid leaks, even under sustained high pressure. For fleet operators, this translates into fewer roadside repairs, lower maintenance costs, and improved driver satisfaction.
High‑efficiency hydraulic assist reduces driver fatigue during long hauls and maneuvering in tight spaces.
Double lip seals with dust excluders prevent contamination and fluid loss, ensuring long-term reliability.
Factory‑calibrated torsion bar ensures consistent steering feel across the entire operating range.
| Parameter | Specification |
|---|---|
| OEM Number | 1316303065 |
| Product Type | Recirculating Ball Hydraulic Steering Gear |
| Brand | SINOTRUK Sitrak / ZF Technology |
| Application | Sitrak C7H, C9H, A7, TX series, Howo T7 |
| Steering Ratio | 22.5 : 1 (variable ratio) |
| Max. Input Torque | 350 Nm |
| Max. Output Torque | 6,500 Nm |
| Hydraulic Pressure | 12 – 14 MPa (working) |
| Flow Rate | 8 – 12 L/min |
| Operating Temp. | -40°C to +120°C |
| Weight | 23.5 kg (approx.) |
When replacing the steering gear with the genuine 1316303065, always disconnect the battery and relieve hydraulic pressure before starting. Use new O‑rings and sealing washers to ensure leak‑free connections. Torque the mounting bolts to 200 Nm and the pitman arm nut to 400 Nm as specified by Sinotruk. After installation, fill the system with approved Dexron III or ZF‑specified hydraulic fluid and bleed the system by turning the steering wheel lock‑to‑lock several times with the engine idling.
Regular maintenance includes checking for fluid leaks, inspecting the dust cover for cracks, and verifying the torque of the pitman arm nut at every 50,000 km interval. Using the genuine 1316303065 steering gear also ensures that the steering column angle and universal joint alignment remain within factory tolerances, preventing premature wear of the intermediate shaft.
Every 1316303065 steering gear is manufactured in ISO 9001:2024 and IATF 16949 certified facilities, with 100% final testing on a hydraulic test bench. Each unit undergoes leak testing, internal pressure validation, and steering torque measurement to ensure it meets Sinotruk’s stringent standards. The housing is made of high‑strength ductile iron (GGG‑50) and coated with a corrosion‑resistant paint that withstands 1,000 hours of salt spray. Counterfeit gears often use inferior cast iron that can crack under stress; the genuine Steering Gear guarantees safety and durability.
Aftermarket steering gears frequently suffer from poor internal machining, resulting in excessive play, steering wander, and premature seal failure. In contrast, the genuine 1316303065 features precision‑ground ball screws and matched ball sets that provide consistent torque feel throughout the steering range. Many non‑original units also have improperly set torsion bars, causing heavy steering at low speeds or overly light steering on highways. By choosing the original 1316303065 steering gear, you eliminate these risks and preserve the vehicle’s original handling characteristics.
Additionally, the genuine part includes a unique serial number traceable to the production batch, ensuring warranty coverage and full compliance with Sinotruk service bulletins. For any fleet operating Sitrak trucks, investing in the 1316303065 steering gear is an investment in driver safety, vehicle uptime, and long‑term value.
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