Product Introduction

This precision-machined set consists of a synchronizer ring (blocking ring) and a matching collar, working together to synchronize gear speeds and enable seamless shifting.

• Structure & Material:

• Synchronizer Ring: Made from high-friction alloy steel with a precision-ground conical friction surface, designed for high heat and wear resistance.

• Collar: High-strength alloy steel with internal splines to mate with the synchronizer hub and external teeth for gear engagement.

• Surface treatments include carburizing and quenching for hardness, plus anti-corrosion coating.

  • Performance: The synchronizer ring creates controlled friction to match gear and shaft speeds; the collar then slides smoothly to lock the gear without clashing.

  • Durability: Withstands repeated high-temperature friction, vibration, and torque loads, maintaining performance over long service intervals.

  • Compatibility: Direct OE replacement, fully matching the HW19710 transmission’s synchronizer interface and dimensional specs.

Core Function

1. Speed Synchronization: The synchronizer ring’s conical friction surface slows or accelerates the target gear to match the shaft speed during shifting.

2. Clash Prevention: Eliminates gear grinding by ensuring perfect speed alignment before the collar engages.

Synchronizer Ring Collar Set WG2203100107 – SINOTRUK HW Series Gearbox Parts

When your SINOTRUK HW series gearbox demands a flawless gear transition, every component matters. The Synchronizer Ring Collar Set WG2203100107 serves as the backbone of your transmission’s shifting mechanism, ensuring smooth engagement between gears while minimizing wear and noise. Sourced directly from our manufacturing base in China, this synchronizer collar set delivers OEM-grade precision at a factory-direct price that keeps your fleet running without breaking your budget. Whether you are maintaining a single truck or managing a large fleet overhaul, this part is engineered to meet the rigorous demands of heavy-duty commercial vehicles.

Why Choose the Synchronizer Ring Collar Set WG2203100107?

Shifting quality is something drivers feel instantly, and fleet managers notice over time. A worn-out synchronizer collar leads to grinding gears, difficult shifts, and eventually costly gearbox failures. Here is what makes this WG2203100107 synchronizer ring collar set a smart investment for your operation:

• Precision-Engineered Tooth Profile: The collar set features precisely machined spline teeth that ensure accurate alignment with the synchronizer hub, resulting in buttery-smooth gear engagement every time.
• Premium Material Construction: Manufactured from high-grade alloy steel with advanced heat treatment, this collar set delivers outstanding wear resistance and long service life under heavy torque loads.
• OEM-Compatible Fitment: Designed as a direct replacement for part number WG2203100107, this set drops right into your SINOTRUK HW series gearbox without any modifications.
• Reduced Downtime: Because we maintain ready stock of popular SINOTRUK gearbox parts, you can count on fast dispatch and shorter repair windows for your fleet.
• Strict Quality Control: Every synchronizer ring collar set undergoes dimensional inspection and hardness testing before shipment, so you receive only parts that meet or exceed factory specifications.

Application and Vehicle Compatibility

The Synchronizer Ring Collar Set WG2203100107 is specifically designed for the SINOTRUK HW series gearbox, which is one of the most widely used heavy-duty transmissions across Chinese commercial vehicles. This part fits seamlessly into the synchronizer hub assembly, where it facilitates speed matching between the main shaft gear and the output shaft during gear changes.

Compatible Vehicles and Gearboxes

• SINOTRUK HOWO A7 heavy-duty trucks equipped with HW19710 / HW19712 transmission
• SINOTRUK HOWO T7H series with HW25712 gearbox
• SINOTRUK SITRAK C7H series utilizing HW Series manual gearbox
• Other SINOTRUK models fitted with HW series 9-speed, 10-speed, and 12-speed transmissions

If you are rebuilding a gearbox or replacing worn synchronizer components, this collar set works hand-in-hand with the synchronizer ring, hub, and sliding sleeve to restore factory-level shift quality. For a complete range of transmission components, explore our Gearbox Parts Collection and our dedicated SINOTRUK HOWO Gearbox Parts page.

Technical Specifications – WG2203100107 Synchronizer Ring Collar Set

OEM/ODM Capability and Custom Packaging

At Mettlead, we understand that different markets have different branding needs. That is why we offer flexible OEM and ODM services for the Synchronizer Ring Collar Set WG2203100107 and all our SINOTRUK HOWO Truck Parts.

• White-Label Packaging: We can ship your synchronizer collar sets in plain, unbranded boxes ready for your own label, making it easy to build your local brand identity.
• Custom Packaging: Provide your logo, brand colors, and design specifications, and we will produce fully customized packaging that reflects your company’s image.
• Private Labeling: Laser-engraved or printed part markings can be applied to meet your specific requirements.
• Bulk OEM Orders: Whether you need 50 sets or 5,000 sets, our production capacity scales to meet your demand without sacrificing quality or delivery timelines.

Our factory-direct model eliminates middlemen, which means you receive genuine quality at competitive pricing while maintaining the flexibility to present parts under your own brand.

Customer Case Study: Fleet Overhaul in East Africa

In early 2024, a fleet management company operating over 120 SINOTRUK HOWO trucks in Kenya reached out to Mettlead with an urgent need. Their vehicles were experiencing widespread shifting difficulties, and after inspection, worn synchronizer ring collar sets were identified as the root cause across multiple units.

The client’s procurement manager needed a reliable supply of Synchronizer Ring Collar Set WG2203100107 for their SINOTRUK HW series gearbox fleet. After comparing several suppliers, they chose Mettlead for three reasons: competitive factory-direct pricing, confirmed stock availability, and our willingness to support white-label packaging for their local workshop brand.

We shipped 200 sets of the WG2203100107 synchronizer collar assembly within 7 working days. Upon installation, the client reported that shifting performance was restored to factory condition, and their drivers noticed an immediate improvement in gear engagement smoothness. Furthermore, the client has since placed repeat orders for additional SINOTRUK HW gearbox parts, including sliding sleeves, synchronizer rings, and output shaft gears. This ongoing partnership demonstrates our commitment to quality, reliability, and service for every customer we work with.

Frequently Asked Questions – Synchronizer Ring Collar Set WG2203100107

What is the function of the synchronizer ring collar set in the HW series gearbox?

The Synchronizer Ring Collar Set WG2203100107 acts as the coupling mechanism between the synchronizer hub and the gear being selected. When you shift gears, the collar slides over the synchronized gear’s engagement teeth, locking it to the output shaft. Essentially, it bridges the speed gap between rotating components so your gears mesh without grinding. Over time, the spline teeth on the collar can wear, leading to hard shifts or gear pop-out, which is why timely replacement is critical.

How do I know when the WG2203100107 synchronizer collar set needs replacement?

Several telltale signs indicate a worn synchronizer collar set. First, you may notice difficulty engaging certain gears, particularly 2nd and 3rd gear where synchronizer load is heaviest. Second, grinding or crunching sounds during shifts suggest the collar teeth are no longer engaging cleanly. Third, if gears slip out of position under load, the collar splines may be rounded or damaged. A qualified technician can confirm wear by inspecting tooth engagement depth and measuring backlash during a gearbox teardown.

Is this WG2203100107 collar set a genuine OEM part or aftermarket?

This synchronizer ring collar set is manufactured to OEM-equivalent specifications, meaning it matches the dimensional tolerances, material grade, and heat treatment standards of the original SINOTRUK factory part. Every batch undergoes strict quality control including CMM dimensional verification and Rockwell hardness testing to ensure reliable performance. Additionally, we offer custom branding options if you prefer to market the part under your own label.

Can I order just the synchronizer collar without the ring, or must I buy the complete set?

Part number WG2203100107 refers to the complete synchronizer collar set (齿毂总成), which includes the hub and ring assembly as a matched unit. We recommend replacing the complete set rather than individual components, because mismatched wear levels between old and new parts can compromise shifting precision and accelerate wear on the new component.

What is the typical lead time and MOQ for the Synchronizer Ring Collar Set WG2203100107?

For standard stock orders, our typical lead time is 3 to 7 working days from order confirmation. If you require custom packaging or large bulk quantities, please allow 10 to 15 working days for production and packaging preparation. Minimum order quantities are flexible and depend on your specific needs. To get an accurate quote with delivery timeline, simply contact us with your required quantity and destination.

Does Mettlead supply other synchronizer components for the SINOTRUK HW gearbox?

Absolutely. Beyond the WG2203100107 synchronizer ring collar set, we carry a comprehensive inventory of HW series gearbox components including synchronizer rings, sliding sleeves, shift forks, main shaft gears, countershaft assemblies, and bearing kits. You can browse our full selection on the SINOTRUK HOWO Gearbox Parts page or reach out to our team for a complete parts list tailored to your rebuild project.

Ready to Order? Get Your Quote Today

Finding the right Synchronizer Ring Collar Set WG2203100107 for your SINOTRUK HW series gearbox should not be complicated. At Mettlead, we make the entire process straightforward: factory-direct pricing, verified quality, flexible packaging options, and fast global shipping to keep your fleet on the road.

Whether you need a single set for a repair job or bulk quantities for workshop inventory, our team is ready to provide a competitive quotation with clear delivery timelines. We also welcome facility visits if you would like to inspect our quality control process firsthand.

Take the next step: Contact Us Now to request pricing, check stock availability, or discuss custom packaging for the WG2203100107 synchronizer collar set. Our export team typically responds within 12 hours on business days.