Product Introduction

This half shaft gear is a precision-forged bevel gear, manufactured from high-strength alloy steel to withstand the high torque loads and dynamic stresses of heavy-duty operation. It features internal splines for connection to the half shaft and external bevel teeth for meshing with the differential pinions. The gear undergoes strict heat treatment and surface finishing processes, including carburizing and quenching, to ensure exceptional wear resistance, dimensional accuracy, and fatigue strength. Its precision-machined splines and teeth ensure perfect alignment and smooth meshing with the differential pinions and half shaft, minimizing noise, vibration, and power loss during operation.

Core Function

• Serves as the primary interface between the differential pinions and the half shaft, transferring torque from the differential to the wheel.

• Meshes with the differential pinions to enable differential rotation between the left and right wheels, preventing tire skidding and wear during cornering or on uneven road surfaces.

• Maintains precise alignment of the half shaft, ensuring accurate power transmission and stable handling.

• Withstands the high torque loads and repeated mechanical stresses of heavy-duty operation, providing consistent performance and extended service life.

• Directly interchangeable with the original factory part, ensuring a precise fit and consistent performance within the axle differential assembly.

Half Shaft Teeth 199014320009 Sinotruk – OEM Spline Shaft for Heavy-Duty Truck Rear Axle

When your heavy-duty Sinotruk truck demands reliable power transfer from the axle housing to the wheels, every single spline tooth matters. The Half Shaft Teeth 199014320009 is precision-engineered to deliver consistent torque transmission, ensuring your fleet stays on the road and your operations keep moving forward. Sourced directly from our factory, this genuine-spec half shaft spline component meets the rigorous demands of long-haul transport, mining logistics, and construction haulage.

At Mettlead, we specialize in supplying authentic Chinese heavy truck parts to global buyers. As a result, procurement managers like you get factory-direct pricing, fast lead times, and the confidence that comes with strict quality control — all without the middleman markup.

Key Features and Benefits of Half Shaft Teeth 199014320009

Precision-Machined Spline Profile

Each tooth on this half shaft is CNC-machined to exact OEM tolerances. Consequently, the spline engages smoothly with the wheel hub and rear axle differential, minimizing backlash and reducing premature wear under heavy loads.

High-Strength Alloy Steel Construction

Manufactured from heat-treated alloy steel, this half shaft teeth component resists torsional fatigue and surface pitting. In other words, it handles the repeated stress cycles of start-stop driving, steep gradients, and fully loaded trailers without compromising structural integrity.

Reliable Power Transmission

The half shaft spline serves as the critical link between the rear axle assembly and the drive wheel. Therefore, choosing a correctly spec’d replacement like the 199014320009 ensures uninterrupted torque delivery, smoother acceleration, and reduced drivetrain vibration.

Direct-Fit Replacement

Designed as a drop-in replacement for the original Sinotruk part, this half shaft teeth component requires no modifications during installation. This means less workshop downtime and faster turnaround for your fleet maintenance schedule.

Cost-Effective Fleet Maintenance

Because we ship directly from our China-based facility, you benefit from competitive factory pricing. Moreover, bulk order discounts are available for fleet operators managing multiple vehicles simultaneously.

Technical Specifications – Half Shaft Teeth 199014320009 Sinotruk

Application Scenario – Where Does This Half Shaft Teeth Fit?

The Half Shaft Teeth 199014320009 is specifically designed for Sinotruk heavy-duty vehicles, including the HOWO and SITRAK series trucks commonly used in long-distance freight, mining operations, and infrastructure construction projects.

Functionally, this half shaft spline sits within the rear axle assembly, where it performs three essential roles:

• Transmitting driving torque – It carries rotational force from the differential side gear to the wheel hub, enabling the truck to move under load.
• Connecting wheel and axle drivetrain – The spline teeth interlock with mating components to form a rigid mechanical connection between the wheel assembly and the bridge body transmission parts.
• Absorbing dynamic loads – During acceleration, braking, and cornering, the half shaft spline absorbs torsional shock, protecting other drivetrain components from sudden stress spikes.

If you notice unusual vibration from the rear wheels, clicking sounds during turns, or visible wear on the existing spline teeth, it is time to replace this component before further damage occurs to the differential or wheel bearings.

OEM and ODM Capability

Mettlead goes beyond simple parts supply. We understand that different markets have different branding and packaging requirements. For this reason, we offer flexible OEM and ODM services tailored to your business needs:

• White-Label Packaging – Receive parts in neutral boxes, ready for your own branding and distribution.
• Custom Packaging – We can print your company logo, part numbers, and barcodes directly on the packaging for a seamless brand experience.
• Strict Quality Control – Every half shaft teeth unit undergoes dimensional inspection, hardness testing, and surface finish verification before shipment.
• Flexible Order Quantities – Whether you need a small trial order or container-load volumes, we accommodate your procurement cycle.

Additionally, we welcome factory visits. If you want to inspect our production lines and quality processes firsthand, our team is ready to host you at our facility in China.

Frequently Asked Questions – Half Shaft Teeth 199014320009

What exactly does the half shaft teeth do in a Sinotruk truck?

The half shaft teeth, also called the half shaft spline, is the toothed section of the axle shaft that meshes with the wheel hub and differential side gear. It transmits engine torque through the rear axle to the drive wheels. Without properly functioning spline teeth, power cannot reach the wheels efficiently, leading to slippage or complete drivetrain failure.

How do I know when the half shaft teeth 199014320009 needs replacement?

Common signs include abnormal clunking or clicking noises from the rear axle area, excessive play in the wheel when jacked up, visible wear or rounding on the spline teeth, and grease leakage around the axle seal. If you observe any of these symptoms, prompt replacement prevents cascading damage to the differential gears and wheel bearings.

Is this half shaft teeth compatible with all Sinotruk models?

Part number 199014320009 is designed primarily for Sinotruk HOWO heavy-duty trucks. However, since Sinotruk uses shared platforms across certain model ranges, it may also fit select SITRAK configurations. We recommend confirming your vehicle’s VIN or existing part number with our team before ordering to ensure a perfect match.

What material is used, and how does it affect durability?

This half shaft spline is forged from alloy steel and then undergoes carburizing and quenching heat treatment. As a result, the surface achieves high hardness for wear resistance, while the core remains tough enough to absorb impact loads. This combination significantly extends service life compared to untreated carbon steel alternatives.

Can I order a small quantity for testing before committing to bulk?

Absolutely. We support trial orders so you can verify fitment, quality, and performance in your specific application. Once satisfied, you can scale up to larger volumes with preferential pricing. Simply contact us to discuss your requirements.

How should I store the half shaft teeth before installation?

Keep the component in its original packaging in a dry, ventilated environment away from corrosive chemicals. The spline teeth are coated with anti-rust oil at the factory; however, prolonged exposure to moisture can still cause surface oxidation. Before installation, clean the spline surface and apply a thin layer of assembly grease for optimal engagement.

Explore More Sinotruk Parts

Looking for additional components for your Sinotruk fleet? Browse our complete range of Sinotruk HOWO truck parts or explore our full Sinotruk parts catalog for everything from engine components to chassis accessories. You can also find more drivetrain components in our dedicated rear axle parts category.

Get a Quote for Half Shaft Teeth 199014320009 – Fast Response Guaranteed

Ready to secure competitive pricing on the Half Shaft Teeth 199014320009 Sinotruk? Our sales team typically responds within 24 hours with pricing, lead time, and shipping options tailored to your location.

Contact Mettlead now to request your quotation. Tell us your required quantity, destination port, and any custom packaging needs — we will handle the rest.