Product Introduction

This precision-engineered transmission gear is a key component of the gear train, responsible for transmitting torque and establishing one of the transmission’s forward gear ratios.

• Structure & Material: Made from high-strength alloy steel, it features external helical teeth for smooth meshing and internal splines for secure mounting on the transmission shaft. The surface is carburized and quenched for exceptional hardness and wear resistance.

• Performance: The helical tooth design ensures smooth, quiet power transfer with reduced noise and vibration. The hardened surface resists wear from high torque loads and continuous operation.

• Durability: The hardened steel construction withstands high torque, shock loads, and friction, ensuring long service life even under harsh operating conditions.

• Compatibility: Direct OE replacement, fully matching the tooth profile and dimensional specifications of the HW19710 transmission’s gear train.

Core Function

1. Torque Transmission: Transmits rotational torque between gears in the transmission’s gear train, establishing a specific gear ratio.

2. Smooth Operation: The helical tooth design ensures quiet, vibration-free meshing with mating gears.

3. Gear Ratio Control: Contributes to the overall gear ratio range of the transmission, enabling optimal vehicle performance and fuel efficiency.

Transmission Gear WG2210040104 – SINOTRUK HW Series Gearbox Replacement Gear

When your SINOTRUK HW series gearbox demands a reliable replacement gear, the Transmission Gear WG2210040104 delivers the precision-engineered performance your fleet depends on. Manufactured to meet OEM specifications, this gearbox gear ensures smooth power transfer, reduced noise, and extended service life — keeping your heavy-duty trucks on the road and your business moving forward.

At Mettlead, we supply this genuine-quality SINOTRUK HW gearbox gear directly from our factory in China, offering wholesale distributors and agents unbeatable factory-direct pricing, complete product traceability, and fast global delivery.

Why Choose the Transmission Gear WG2210040104 for Your SINOTRUK HW Gearbox

This transmission gear is not just another replacement part — it is a critical drivetrain component that directly impacts vehicle performance, fuel efficiency, and driver safety. Here is what makes it stand out:

• OEM-Grade Precision: Machined to exact tolerances matching the original SINOTRUK HW series gearbox specifications, ensuring a perfect fit every time.
• Superior Material Composition: Forged from high-strength alloy steel with advanced heat treatment, this gear resists wear, pitting, and fatigue under extreme loads.
• Optimized Tooth Profile: The carefully engineered gear tooth geometry reduces meshing noise, minimizes vibration, and provides smoother gear engagement throughout the transmission’s operating range.
• Extended Service Life: Thanks to precision grinding and surface hardening, this WG2210040104 transmission gear outlasts inferior aftermarket alternatives, reducing your customers’ downtime and replacement costs.
• Wholesale-Friendly Pricing: As a factory-direct supplier, Mettlead eliminates middlemen, giving distributors and agents healthy profit margins while maintaining strict quality standards.

Technical Specifications – Transmission Gear WG2210040104

Below you will find the detailed parameters of this SINOTRUK HW series gearbox gear. Every specification has been verified against OEM documentation to ensure accuracy for your ordering and application needs.

Application Scenarios – Where This Gear Fits

The Transmission Gear WG2210040104 is specifically designed to fit the SINOTRUK HW series gearbox, which is widely used across multiple heavy truck platforms. Whether you are servicing a local fleet or supplying parts to workshops across continents, this gear meets the demand.

Compatible Vehicle Models:

• SINOTRUK HOWO A7 heavy-duty trucks equipped with HW19710 transmission
• SINOTRUK HOWO 6×4 / 8×4 tractor heads and dump trucks
• SINOTRUK SITRAK C7H series with HW series gearbox
• Various SINOTRUK models utilizing the HW15710 and HW13710 gearbox platforms

In addition, this part serves as a direct replacement in maintenance and overhaul scenarios including gearbox rebuild programs, preventive maintenance schedules, and emergency breakdown repairs. Fleet operators and repair shops consistently rely on the WG2210040104 gear to restore full gearbox functionality quickly and cost-effectively.

Looking for more SINOTRUK gearbox components? Browse our complete Gearbox Parts Collection or visit our dedicated SINOTRUK HOWO Gearbox Parts page for a full catalog.

OEM/ODM Capability & Custom Packaging

Mettlead understands that wholesale distributors and regional agents have unique branding requirements. That is precisely why we offer flexible OEM and ODM services tailored to your business needs:

• White-Label Packaging: Receive the Transmission Gear WG2210040104 in neutral packaging, ready for your own branding and labeling.
• Custom Packaging Design: We can produce packaging with your company logo, part numbers, barcodes, and compliance markings — making your inventory shelf-ready upon arrival.
• Private Label Programs: For distributors building their own aftermarket brand, we provide consistent supply with your brand identity on every box.
• Strict Quality Control: Every batch of transmission gears undergoes dimensional inspection, hardness testing, and surface finish verification before shipment. We welcome factory visits and third-party inspections.

Explore the full range of SINOTRUK truck parts we supply through our SINOTRUK HOWO Truck Parts brand page.

Customer Case Study – Transmission Gear WG2210040104 in Action

A leading truck parts distributor in East Africa approached Mettlead seeking a reliable supply of Transmission Gear WG2210040104 for the SINOTRUK HW series gearbox. Their previous supplier had delivered inconsistent quality, resulting in premature gear failure and costly warranty claims from workshop customers.

After switching to Mettlead, the distributor received an initial trial order of 200 pieces of the WG2210040104 transmission gear. Each unit passed their incoming quality inspection without exception. Over the following six months, they reported zero warranty returns related to this part — a stark contrast to the 8% failure rate they experienced previously.

As a result, they expanded their order volume to cover additional SINOTRUK HW gearbox parts and have since become one of our long-term strategic partners in the region. This case demonstrates exactly how the right supplier relationship transforms your product reputation and bottom line.

Frequently Asked Questions – Transmission Gear WG2210040104

What gearbox models does the WG2210040104 transmission gear fit?

The Transmission Gear WG2210040104 is designed specifically for the SINOTRUK HW series gearbox family, including the HW19710, HW15710, and HW13710 models. It serves as a direct OEM-equivalent replacement gear within these transmissions.

What material is the WG2210040104 gear made from?

This transmission gear is forged from high-strength alloy steel. It undergoes carburizing, quenching, and tempering heat treatment processes, achieving a surface hardness of HRC 58–62. This ensures exceptional wear resistance and fatigue strength under heavy-duty operating conditions.

How does this gear compare to OEM original parts?

The Transmission Gear WG2210040104 from Mettlead is manufactured to OEM specifications, matching the same material grade, dimensional tolerances, and heat treatment standards as factory-original parts. Many of our gears are produced on the same production lines that supply the original equipment manufacturers.

What is the typical service life of this transmission gear?

Under normal operating conditions and proper lubrication maintenance, the WG2210040104 gear is engineered to match or exceed the service life of the original equipment gear — typically lasting through 300,000 to 500,000 kilometers of heavy-duty operation before requiring inspection or replacement.

Can I order the WG2210040104 gear with custom packaging?

Absolutely. Mettlead offers white-label, neutral, and fully customized packaging solutions. Whether you need your own brand name, part numbering system, or specific compliance labels, we accommodate your requirements at no unreasonable extra cost.

How do you ensure quality consistency across large orders?

Every production batch of the Transmission Gear WG2210040104 goes through a multi-stage quality control process: raw material certification, in-process dimensional checks, post-heat-treatment hardness testing, and final inspection before packaging. We provide inspection reports and welcome third-party audits or factory visits.

Get Your Wholesale Quote Today

Ready to secure factory-direct pricing on the Transmission Gear WG2210040104 for your SINOTRUK HW series gearbox inventory? Whether you need 50 pieces or 5,000, Mettlead delivers consistent quality, competitive margins, and reliable logistics to your doorstep.

Take the next step — contact us now to request a detailed quotation, discuss MOQ options, or arrange a factory visit. Our sales team typically responds within 24 hours with complete pricing and lead time information.