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 WG2210040105 – SINOTRUK HW Series Gearbox Replacement Gear

When your SINOTRUK HW series gearbox demands a reliable replacement gear, the Transmission Gear WG2210040105 delivers the precise fit and lasting durability your fleet needs. Engineered to meet original equipment specifications, this gearbox gear keeps heavy-duty trucks shifting smoothly under the toughest operating conditions. Whether you’re a wholesaler stocking fast-moving parts or a regional distributor serving transport fleets, this gear offers the quality-to-price ratio that protects your margins and your reputation.

At Mettlead, we supply genuine-equivalent SINOTRUK HOWO truck parts directly from our China-based facility — giving you factory-direct pricing, strict quality control, and a comprehensive catalog that covers the entire drivetrain system.

Key Features and Benefits of Transmission Gear WG2210040105

Understanding what makes this transmission gear stand out helps you confidently recommend it to your downstream customers. Here’s why the WG2210040105 consistently earns repeat orders:

• OEM-Grade Precision: Manufactured to match the original SINOTRUK dimensional and metallurgical standards, so the gear meshes perfectly within the HW series gearbox assembly.
• High-Strength Alloy Steel: Forged from carburized alloy steel, then heat-treated to achieve superior surface hardness while maintaining a tough core — resisting pitting, wear, and fatigue over hundreds of thousands of kilometers.
• Optimized Tooth Profile: The tooth geometry is ground to tight tolerances, which reduces noise, minimizes vibration, and ensures efficient power transfer through the transmission.
• Extended Service Life: Thanks to precise heat treatment and finishing processes, this gear delivers a longer replacement cycle — meaning fewer warranty claims and happier end-users.
• Direct Replacement Design: No modifications required. The WG2210040105 drops straight into the gearbox housing, saving workshop time and labor costs.
• Wholesale-Friendly Pricing: Factory-direct supply eliminates middlemen, so you receive competitive unit costs even at moderate MOQs.

Application Scenarios – Where This Gear Works

The Transmission Gear WG2210040105 is specifically designed for the SINOTRUK HW series gearbox, one of the most widely deployed heavy-duty transmissions across Africa, the Middle East, Southeast Asia, and Central Asia. More specifically, this gear fits the following applications:

• Compatible Gearbox Models: HW19710, HW19712, HW15710, HW19708 and related HW series variants.
• Applicable Truck Models: SINOTRUK HOWO A7, HOWO T7H, HOWO T5G, SITRAK C7H, and other heavy-duty models equipped with HW transmissions.
• Typical Use Cases: Long-haul logistics fleets, mining transport vehicles, construction site dump trucks, and port container tractors — anywhere the gearbox endures sustained heavy loads and frequent shifting cycles.

If you’re servicing fleets that rely on SINOTRUK powertrains, keeping this part in stock means faster turnaround for your repair shop customers and less vehicle downtime. Explore our full range of gearbox parts and SINOTRUK HOWO gearbox parts to build a comprehensive inventory.

Technical Specifications

Below you’ll find the key parameters for the Transmission Gear WG2210040105. These specifications help you verify fitment and compare against your existing stock records:

OEM/ODM Capability and White-Label Service

As a B2B parts supplier, we understand that your brand identity matters. That’s exactly why Mettlead offers flexible OEM and ODM solutions tailored to distributors and wholesalers:

• White-Label Packaging: We can ship the Transmission Gear WG2210040105 in your branded boxes, complete with your logo, part labels, and documentation — so your customers see your brand at every touchpoint.
• Custom Packaging Configurations: Whether you need individual cartons, bulk pallet packing, or specialized export crating, we adapt our packaging to your logistics requirements.
• Strict Quality Control: Every gear undergoes dimensional inspection, hardness testing, and visual examination before leaving our facility. We maintain batch traceability so you can audit quality at any time.
• Flexible Order Volumes: We support trial orders for market testing as well as large-batch production runs for established distributors. Our production capacity scales with your business growth.
• Technical Support: Our engineering team can provide fitment verification, cross-reference guidance, and application data sheets to support your sales team in the field.

In short, when you partner with Mettlead, you gain a supply chain extension — not just a vendor.

Customer Case Study – Transmission Gear WG2210040105 in Action

A heavy truck parts distributor based in Lagos, Nigeria, approached us after experiencing repeated quality inconsistencies with their previous supplier of SINOTRUK HW series gearbox components. Their end customers — fleet operators running HOWO A7 dump trucks in mining corridors — were reporting premature gear wear within 40,000 km of installation.

After switching to our Transmission Gear WG2210040105, the distributor saw a dramatic improvement. Field feedback confirmed the gears were lasting well beyond 120,000 km under comparable operating conditions. Consequently, warranty return rates dropped by over 70%, and the distributor’s monthly reorder volume tripled within six months.

Moreover, by taking advantage of our white-label packaging, they built stronger brand recognition across West Africa’s aftermarket network. Today, they stock more than 35 different SINOTRUK HW gearbox part numbers through Mettlead, and they’ve expanded into SHACMAN and WEICHAI components as well.

This case illustrates a simple truth: when the Transmission Gear WG2210040105 meets proper quality standards, everybody in the supply chain benefits — from the distributor’s margins to the fleet operator’s uptime.

Frequently Asked Questions (FAQ)

Is the Transmission Gear WG2210040105 an original SINOTRUK part or aftermarket?

This is a high-quality aftermarket replacement gear manufactured to OEM specifications. It matches the original part in dimensions, material composition, and heat treatment standards. As a result, it fits and performs identically to the factory-installed gear inside the HW series gearbox.

What gearbox models does the WG2210040105 fit?

The WG2210040105 is designed for SINOTRUK HW series transmissions, including the HW19710, HW19712, HW15710, and related variants. These gearboxes are commonly found in HOWO A7, T7H, T5G, and SITRAK heavy-duty trucks. If you need to cross-reference fitment for a specific vehicle, our team can assist.

What material is this transmission gear made from?

It’s forged from carburized alloy steel — typically 20CrMnTi or an equivalent grade. After carburizing, quenching, and tempering, the surface hardness reaches HRC 58–62, while the core remains tough at HRC 30–42. This combination provides excellent wear resistance on the tooth surface without making the gear brittle.

How long does this gear typically last under normal operating conditions?

Under standard highway and mixed-route conditions, fleet operators commonly report service life exceeding 100,000 km. However, actual lifespan depends on factors like load weight, shifting habits, lubrication quality, and whether the gearbox is properly maintained. In severe-duty applications such as mining, periodic inspections are recommended.

Can I order a small trial quantity before committing to bulk?

Absolutely. We support sample and trial orders so you can verify fitment and quality with your own customers before scaling up. Once you’re satisfied, we offer competitive pricing tiers based on volume commitments.

Do you provide cross-reference data for related SINOTRUK gearbox parts?

Yes. Our catalog covers a wide range of HW series gearbox components — including shafts, synchronizers, bearings, and housings. We can provide cross-reference lists to help you identify complementary parts that your customers frequently need alongside the WG2210040105.

Ready to Stock the Transmission Gear WG2210040105?

If you’re looking to secure competitive wholesale pricing on the Transmission Gear WG2210040105 for SINOTRUK HW Series Gearbox, we’re ready to provide a fast quotation tailored to your volume and shipping requirements. Our team typically responds within 12 hours with pricing, lead time, and logistics options.

Here’s what you can expect when you work with Mettlead:

• Factory-direct pricing with no hidden fees
• Flexible, secure payment methods
• Fast and reliable international shipping
• White-label and custom packaging at no excessive premium
• Open invitation to visit our facility for inspection

Take the next step: Contact us today to request your quote, ask technical questions, or discuss a partnership that grows with your business. We look forward to hearing from you.