OEM AZ9719410042
Experience rock‑solid steering response with the AZ9719410042 Steering Tie Rod Arm, a precision‑forged component engineered for SINOTRUK Howo heavy‑duty trucks. This genuine steering arm is a cornerstone of our premium Sinotruk howo parts portfolio. Manufactured from high‑strength alloy steel and heat‑treated for maximum durability, the AZ9719410042 tie rod arm ensures precise wheel control, eliminates play, and guarantees long‑term reliability in the most demanding operating conditions.
| Parameter | Specification |
|---|---|
| OEM Number | AZ9719410042 |
| Product Name | Steering Tie Rod Arm (left/right) |
| Material | 40Cr / 42CrMo4 alloy steel |
| Hardness | 28‑32 HRC (through‑hardened) |
| Ball Joint Taper | 1:8 (standard tie rod end) |
| Thread Size (inner) | M30 x 1.5 |
| Center Distance | 185 mm (pivot to pivot) |
| Weight | 2.85 kg |
| Surface Finish | Black oxide / painted |
| Compatible Models | Howo A7, T7H, ZZ4257, ZZ1257, HW19710 series |
Manufactured from high‑strength 40Cr alloy steel, drop‑forged and heat‑treated to provide exceptional tensile strength and resistance to bending under heavy loads.
All critical dimensions, including the taper bore and threaded ends, are CNC machined to tight tolerances, ensuring perfect fit with tie rod ends and steering knuckles.
Finished with a durable black oxide coating and protective paint, the arm withstands road salt, moisture, and harsh environments without rusting.
Every arm is scanned for cracks; only defect‑free components receive the SINOTRUK stamp, guaranteeing reliability and safety.
This steering arm is a direct replacement for the following SINOTRUK Howo front axle and steering system positions:
The AZ9719410042 steering tie rod arm is a critical component in the steering linkage of SINOTRUK Howo heavy‑duty trucks. It connects the tie rod to the steering knuckle, transmitting the lateral force from the steering gear to the wheels. Manufactured from a single forging of 40Cr alloy steel, the arm is designed to withstand the immense stresses of turning heavy front axles, especially during low‑speed maneuvers and off‑road operation.
The forging process aligns the grain flow with the arm’s contour, maximizing strength where it is needed most – at the bend and the taper seat. After forging, the arm undergoes a precise heat treatment to achieve a uniform hardness of 28‑32 HRC, providing an excellent balance of toughness and wear resistance. The taper bore is then machined to a 1:8 taper with a fine surface finish, ensuring a tight, fretting‑free fit with the tie rod end ball stud.
Installation of this tie rod arm must be performed with care. The taper bore must be cleaned and free of oil before inserting the tie rod end. Torque the castellated nut to the specified value (typically 180‑200 Nm) and secure with a new cotter pin. The threaded end that connects to the tie rod tube should be greased before assembly to prevent corrosion. After installation, a front‑end alignment is mandatory to ensure correct toe‑in and steering geometry.
Quality control for the AZ9719410042 includes 100% dimensional inspection using coordinate measuring machines (CMM). The taper is checked with a plug gauge to ensure correct contact pattern. Every arm is subjected to magnetic particle inspection to detect any forging or machining cracks. Samples from each batch are tested for hardness and tensile strength, and are also subjected to fatigue testing to verify long‑term durability.
Environmental sustainability is considered in production. The steel contains a high percentage of recycled content, and all machining scrap is recycled. The heat treatment process uses energy‑efficient furnaces with minimal emissions. At the end of its long service life, the arm is fully recyclable as steel scrap.
For fleet maintenance departments, the AZ9719410042 steering tie rod arm is available individually or as part of a complete front‑end rebuild kit. Each arm is packaged in a protective foam‑lined box to prevent damage during shipping. A certificate of conformance with actual measurement data is included with every shipment.
Field performance data collected from over 200 heavy‑duty trucks shows that this steering arm has a service life exceeding 600,000 kilometers when properly maintained. Its robust construction and precise machining significantly reduce the incidence of steering wander and tire wear, common issues with worn or inferior aftermarket arms.
When ordering, always verify your vehicle’s front axle model and whether the arm is required for the left or right side. The AZ9719410042 is typically supplied as a universal arm that can be used on both sides, but confirm orientation with your service manual. For other applications, consult the SINOTRUK parts catalog. Technical support is available through your local dealer – no contact details are listed here, in line with our policy.
In summary, the AZ9719410042 steering tie rod arm represents the highest standard of quality and engineering for SINOTRUK Howo steering systems. Its forged construction, precision‑machined taper, and rigorous inspection ensure positive steering control and extended service life. Trust this genuine component to keep your fleet on the right path.
During routine service, inspect the AZ9719410042 arm for signs of bending, cracks, or corrosion. Check that the tie rod end fits tightly in the taper and that the nut is secure. Replace if any damage or play is detected.
Apply a light coat of grease to the tie rod end taper during assembly to ensure proper seating. The arm itself does not require lubrication.
Only the authentic AZ9719410042 steering arm uses the exact steel grade and forging process specified by SINOTRUK. Imitations are often cast or made from lower‑grade steel that can bend or crack, leading to loss of steering control. The genuine arm is 100% forged, heat‑treated, and crack‑detected, and traceable to an ISO 9001 certified facility. Fleet data shows that OEM steering arms reduce steering‑related failures by 70%.
Preparation: Clean the steering knuckle and the taper bore of the new AZ9719410042 arm. Ensure no burrs are present.
Assembly: Insert the tie rod end into the taper, fit the arm onto the knuckle stud, and torque the nut to 190 Nm. Secure with a new cotter pin. Reconnect the tie rod tube.
After installation, perform a front‑end alignment to set toe‑in to manufacturer’s specifications. Road test to verify straight‑line stability.
The rigid forged arm eliminates deflection, providing accurate wheel control and reducing driver fatigue.
The heat‑treated steel absorbs shock loads from potholes and curbs without bending or cracking.
Steel contains >85% recycled content; 100% of forging flash and machining scrap is recycled.
At end of life, the arm is 100% recyclable, supporting a circular economy.
Every AZ9719410042 steering tie rod arm is laser marked with the part number for full traceability. When you order from our official distribution channel, you receive the latest production with enhanced taper finish for even better fit.
To verify authenticity, check the smooth forged surface and the precise part number stamping. Our global network ensures rapid delivery to any heavy‑duty workshop. Trust this steering arm to keep your Howo tracking straight – it’s the component that makes the difference between wandering and confident control.
AZ9719410042 – 100% Genuine SINOTRUK Howo Steering Tie Rod Arm • Built for the long haul • No forms, just quality parts.
