Product Introduction

Structure

This straight torque rod adopts an integrated forged and welded structure, with a high-strength alloy steel round bar as the core connecting rod and precision-forged steel end yokes at both ends.  The entire assembly is coated with a matte gray anti-corrosion finish, and the welds are subjected to non-destructive testing to ensure structural integrity. The rod body features a smooth surface design to reduce wind resistance and avoid debris accumulation during operation.

Performance

Crafted from premium 42CrMo alloy steel and treated with quenching and tempering heat treatment, the torque rod achieves high tensile strength, yield strength and impact toughness, capable of withstanding extreme longitudinal and lateral torque loads generated by heavy-duty truck axles during driving. The gray anti-corrosion coating has excellent resistance to gravel impact, salt spray corrosion and high-temperature aging, maintaining stable mechanical properties in the temperature range of -40°C to 150°C. The precision-machined pivot holes ensure zero-clearance matching with bushings and kingpins, avoiding abnormal wear and noise during long-term use.

Core Function

1. Serves as a core connecting component of the heavy-duty truck axle suspension system, connecting the axle and the frame to transmit longitudinal and lateral torque between them.

2. Maintains the precise relative position of the axle and the frame, ensuring the stability of the wheel alignment and avoiding tire abnormal wear caused by axle offset.

3. Restricts the movement track of the axle during acceleration, braking and cornering, enhances the vehicle’s driving stability and handling performance, and shortens the braking distance.

Straight Torque Rod AZ9925522175 – Genuine-Spec Replacement for Sinotruk Sitrak Heavy-Duty Trucks

When your Sitrak truck hauls heavy loads across rough terrain, every suspension link has to earn its place. The Straight Torque Rod AZ9925522175 does exactly that — it anchors the rear axle to the chassis frame, transmits driving and braking torque, and keeps the axle aligned under extreme stress. Manufactured to OEM dimensional standards and built from forged alloy steel, this torque rod delivers the durability fleet operators and workshop managers demand, at a factory-direct price that protects your bottom line.

At Mettlead, we specialize in supplying authentic-spec parts for SINOTRUK, Sitrak, HOWO, SHACMAN, FAW, WEICHAI, DONGFENG, and FOTON trucks to buyers worldwide. With strict quality control, flexible packaging options, and reliable logistics, we make cross-border procurement simple and stress-free.

Key Functions and Benefits of the AZ9925522175 Straight Torque Rod

What Does a Straight Torque Rod Actually Do?

Think of the straight torque rod as the rigid backbone between your truck’s chassis and its drive axle. It performs three critical jobs simultaneously:

• Torque Transmission – Transfers driving force and braking torque from the axle housing to the frame, preventing axle wind-up during acceleration and deceleration.
• Axle Positioning – Holds the axle in precise longitudinal alignment, so tires wear evenly and the truck tracks straight at highway speed.
• Vibration Damping – Works with rubber bushings at each end to absorb road shocks, protecting both the chassis and the driveline from fatigue cracking.

Why Choose This Part from Mettlead?

• OEM-Matching Dimensions – Center-to-center length, bushing bore diameter, and mounting hole pattern match the original Sinotruk specification, ensuring bolt-on fitment with no modifications.
• Forged Alloy Steel Construction – The rod body is hot-forged rather than cast, which gives it superior grain structure, higher tensile strength, and better fatigue resistance under cyclic loading.
• Pre-Pressed Rubber Bushings – Factory-installed bushings are vulcanized to the inner sleeve, reducing installation time and eliminating the risk of improper press-fit on site.
• Corrosion-Resistant Finish – Electrophoretic coating protects against salt, mud, and moisture — essential for trucks operating in tropical or coastal environments.
• Factory-Direct Pricing – By sourcing straight from our warehouse in China, you skip middlemen markups and keep your per-unit cost competitive.

Technical Specifications – AZ9925522175 Straight Torque Rod

Application Scenarios – Where This Torque Rod Belongs

Compatible Vehicle Models

The AZ9925522175 straight torque rod is designed to fit the following Sinotruk platforms:

• Sitrak C7H / G7 – Long-haul tractor units and heavy-duty cargo trucks.
• HOWO A7 / T7H – Regional distribution and construction-site haulage vehicles.
• HOWO T5G – Medium-to-heavy logistics trucks requiring reliable rear suspension linkage.

Whether your fleet runs intercity freight corridors or tackles unpaved mining roads, this torque rod maintains axle stability and extends tire life across all operating conditions.

Typical Replacement Scenarios

1. Bushing Wear – Cracked or collapsed rubber bushings cause clunking noises and axle misalignment. Replacing the complete rod assembly restores factory ride quality.
2. Rod Body Fatigue – Visible cracks or bending near the forging flash line indicate the rod has exceeded its service life, especially on overloaded trucks.
3. Post-Accident Repair – After a rear-end collision or severe pothole impact, inspecting and replacing torque rods prevents hidden alignment issues from damaging driveshaft U-joints.

For a complete overview of Sitrak chassis and suspension components, visit our Chassis Parts Category page. You can also explore the full Sitrak Heavy-Duty Parts catalog or browse our Sinotruk Sitrak Truck Parts Full Category Guide for every system in one place.

OEM / ODM Capability – Tailored to Your Market

Mettlead understands that different markets have different branding and packaging requirements. That is why we offer flexible customization options alongside our standard supply:

• White-Label Packaging – Neutral boxes with no supplier branding, ready for your own labels.
• Custom Packaging – Your logo, part number, and barcode printed directly on the carton or shrink-wrap sleeve.
• Private-Label Programs – Consistent branding across an entire product range for distributors building their own aftermarket identity.
• Bulk & Mixed Container Orders – Combine torque rods with other chassis parts (V-rods, stabilizer bars, spring pins) in a single shipment to reduce freight cost per piece.

Every batch passes our in-house quality gate — dimensional inspection, hardness testing, and bushing pull-out force verification — before it leaves the warehouse. We stand behind what we ship.

Frequently Asked Questions – AZ9925522175 Straight Torque Rod

Q1: How can I confirm this torque rod fits my specific Sitrak model?

Cross-reference the OEM number AZ9925522175 with your truck’s original parts catalog or VIN-based lookup system. If you are unsure, send us your vehicle model and chassis number, and our technical team will verify compatibility within 24 hours.

Q2: What is the expected service life of this straight torque rod?

Under normal loading conditions and on paved roads, the rod body itself can last the lifetime of the truck. However, the rubber bushings typically need inspection every 150,000–200,000 km. Harsh environments — mining, construction, heavily overloaded routes — will shorten bushing life, so more frequent checks are advisable.

Q3: Can I replace just the bushings instead of the entire rod?

Technically yes, but pressing new bushings into a used rod requires specialized tooling and precise alignment. In most workshop settings, replacing the complete assembly is faster, more reliable, and avoids the risk of damaging the rod eye during bushing removal.

Q4: What causes a straight torque rod to fail prematurely?

The most common culprits are chronic overloading (which overstresses the forging), loose mounting bolts (which allow micro-movement and fretting corrosion), and contaminated bushings (road salt or chemicals that degrade the rubber compound). Regular torque checks on mounting hardware go a long way toward prevention.

Q5: Is this part identical to the original Sinotruk factory part?

It is manufactured to the same dimensional and material specifications as the OEM part. The forging process, steel grade, and bushing compound replicate the original design intent. The only difference is the packaging — unless you opt for Mettlead-branded or white-label boxing.

Ready to Secure Your Supply? Let’s Talk.

Whether you need 10 pieces for a workshop restock or 500 units for a regional distribution contract, Mettlead delivers competitive pricing, fast lead times, and dependable quality on every order of the Straight Torque Rod AZ9925522175.

Here is what happens when you reach out:

1. You send us your part number, quantity, and destination.
2. We reply within 12 hours with a detailed quotation including freight options.
3. Once confirmed, production or warehouse picking begins immediately.
4. You receive tracking information and estimated arrival date.

Get your quote today — Contact Us and one of our parts specialists will take care of the rest. We also welcome factory visits if you would like to inspect our quality process in person.