Product Introduction

• Structure: A precision-machined solid steel shaft with a hardened surface for wear resistance. It features a square end for secure torque transmission and a smooth cylindrical body to support rotating gears.

• Performance: The high-strength steel construction withstands the high torque and radial loads of heavy-duty operation, ensuring stable gear alignment and reliable power transmission. The hardened surface resists abrasion from gear rotation, maintaining dimensional accuracy over long service life.

Core Function

1. Gear Support & Alignment: Provides a stable, precise mounting point for transmission gears, ensuring they remain aligned for smooth meshing.

2. Torque Transmission: The square end securely transmits rotational torque from the gear train to other transmission components.

3. Wear Resistance: The hardened surface treatment resists wear from gear movement, maintaining shaft integrity even under prolonged heavy load.

Gear Shaft L=138 WG7117329067 – Genuine Sinotruk Sitrak Transmission Part

When your Sinotruk Sitrak heavy-duty truck demands flawless power transmission, every single component in the gearbox matters. The Gear Shaft L=138 WG7117329067 is a precision-engineered transmission gear shaft designed to handle extreme torque loads while maintaining smooth, reliable shifting performance. Sourced directly from our factory supply chain, this part delivers OEM-grade fitment and durability — so your fleet stays on the road, not in the workshop.

At Mettlead, we specialize in supplying authentic Chinese heavy-duty truck parts to buyers worldwide. Whether you are a fleet maintenance manager, a spare parts distributor, or a workshop owner, this gear shaft offers the exact specifications your Sitrak drivetrain needs. Moreover, our factory-direct pricing means you get genuine quality without the inflated middleman markup.

Key Features and Benefits of Gear Shaft WG7117329067

This gear shaft does more than simply transfer rotational force — it serves as a critical link in your truck’s transmission system. Here is why procurement managers consistently choose this part from Mettlead:

• Precision-Ground Splines: Each spline is machined to tight tolerances, ensuring seamless engagement with mating gears and minimizing wear over thousands of operating hours.
• High-Strength Alloy Steel: Manufactured from heat-treated alloy steel, this shaft resists fatigue, torsional stress, and surface pitting — even under heavy-load hauling conditions.
• Exact OEM Dimensions (L=138mm): The 138mm length specification guarantees a drop-in replacement with no modifications required, reducing your workshop downtime significantly.
• Optimized Surface Hardness: Carburizing and quenching processes create a hard outer layer while maintaining a tough, shock-absorbing core — the ideal balance for transmission components.
• Factory-Direct Quality Assurance: Every batch undergoes strict dimensional inspection and hardness testing before shipment, so you receive parts that meet or exceed original specifications.

In addition to these technical advantages, choosing Mettlead as your supplier means you benefit from flexible payment options, responsive customer service, and consolidated shipping for multi-part orders. As a result, your total procurement cost drops while reliability goes up.

Technical Specifications – Gear Shaft L=138 WG7117329067

Accurate specifications are essential when ordering transmission components. The following table outlines the key parameters for this gear shaft, ensuring you can verify fitment before placing your order:

If you need further dimensional details — such as spline count, shaft diameter, or gear tooth profile — our technical team can provide detailed drawings upon request. Simply reach out through our inquiry form.

Application Scenario – Where This Gear Shaft Fits

The Gear Shaft WG7117329067 is specifically designed for the transmission and drivetrain assembly of Sinotruk Sitrak heavy-duty trucks. It functions as a critical rotating component within the gearbox, transferring engine torque through precisely cut splines and gear teeth to downstream transmission elements.

This part is commonly needed in the following situations:

• Scheduled Gearbox Overhauls: During routine transmission rebuilds on Sitrak tractors and rigids, worn gear shafts must be replaced to restore shifting precision.
• Failure Replacement: If drivers report grinding noises, difficult gear engagement, or unexpected vibration from the gearbox, a damaged gear shaft is often the root cause.
• Fleet Preventive Maintenance: High-mileage fleet operators proactively stock this shaft to minimize unplanned downtime during long-haul operations.
• Aftermarket Distribution: Spare parts wholesalers serving African, Middle Eastern, Southeast Asian, and South American markets keep this SKU in inventory due to strong Sitrak truck presence in those regions.

For a complete overview of all available Sitrak drivetrain, engine, chassis, and cabin components, visit our Sitrak Heavy-Duty Parts Factory Direct catalog page. You can also explore our Sinotruk Sitrak Truck Parts Full Category Guide to find every part organized by system and function.

OEM/ODM Capability and Custom Packaging

Mettlead understands that different markets have different branding and packaging requirements. That is why we offer flexible OEM and ODM services tailored to your business model:

• White-Label Packaging: We can ship gear shafts in neutral, unbranded boxes — ideal if you sell under your own private brand or company label.
• Custom Packaging Design: Need your company logo, part number sticker, or barcode on every box? Our packaging team handles it, so your products arrive shelf-ready for your warehouse or retail counter.
• Bulk and Assorted Orders: Combine this gear shaft with other Sitrak transmission parts — input shafts, synchronizer rings, bearings, and seals — into a single consolidated shipment. This reduces per-unit freight costs considerably.
• Quality Documentation: We provide packing lists, commercial invoices, and inspection certificates with every shipment to support your customs clearance process.

Furthermore, Mettlead welcomes factory visits. If you want to inspect our quality control procedures and warehousing firsthand before committing to a long-term supply agreement, our team will arrange the visit for you.

Frequently Asked Questions – Gear Shaft WG7117329067

What exact truck models does the Gear Shaft WG7117329067 fit?

This gear shaft is designed for Sinotruk Sitrak series heavy-duty trucks equipped with the matching transmission assembly. Because Sitrak models share common gearbox platforms across multiple configurations (tractors, mixer trucks, dump trucks), the part fits broadly across the Sitrak range. However, we always recommend confirming your VIN or existing part number with our team to ensure a perfect match.

How can I verify that WG7117329067 is the correct part number for my gearbox?

The most reliable method is to check the number stamped or printed on your original gear shaft. Alternatively, you can provide us with your truck’s chassis number or gearbox model number, and our parts specialists will cross-reference it in our database to confirm compatibility.

What causes a gear shaft to fail in a Sitrak transmission?

Common failure causes include prolonged operation with low or contaminated transmission oil, excessive torque shock from aggressive driving habits, misaligned mating gears due to bearing wear, and metal fatigue after very high mileage. Regular oil changes and timely bearing inspections help extend gear shaft service life significantly.

Is this gear shaft made from the same material as the original OEM part?

Yes. Our gear shafts are manufactured from high-strength alloy steel and undergo the same carburizing and quenching heat treatment processes used in OEM production. This ensures equivalent hardness, wear resistance, and fatigue strength compared to the factory-original component.

Can I order just one piece, or is there a minimum order quantity?

We serve both small workshop buyers and large-volume distributors. While bulk orders enjoy better unit pricing, we are happy to supply smaller quantities as well. Please contact us with your required quantity for an accurate quotation.

How is the gear shaft packaged to prevent shipping damage?

Each shaft is individually wrapped in anti-rust oil paper, then placed in a protective box with foam cushioning. For sea freight or long-distance transport, outer cartons are reinforced and palletized to prevent movement and impact damage during transit.

Ready to Secure Your Gear Shaft WG7117329067? Let’s Talk.

Every day your truck sits idle waiting for parts costs money. With Mettlead’s factory-direct supply chain, you get genuine-quality Sinotruk Sitrak gear shafts delivered faster and priced lower than traditional channels. Our team is standing by to provide pricing, confirm stock availability, and arrange shipment to your location — wherever in the world that may be.

Take the next step:

• Request a quotation with your target quantity and delivery address.
• Ask our team to cross-check part compatibility for your specific vehicle.
• Inquire about bundled orders with other Sitrak transmission components to save on freight.

Contact Mettlead Now — send us your inquiry today, and our parts consultants will respond within 24 hours with a detailed offer. Your fleet’s uptime depends on the right parts, from the right supplier, at the right time.