Product Introduction

• Structure: An integral precision-forged component made from high-strength nickel-chromium alloy steel, with an external helical tooth profile and an internal spline bore. The tooth surface undergoes carburizing, quenching, and precision grinding to achieve a hardness of HRC 58–62, ensuring extreme wear resistance. The surface is coated with a black oxide finish for corrosion protection.

• Performance: The high-hardness tooth surface withstands extreme torque and impact forces, while the helical tooth design ensures smooth, quiet power transmission with reduced vibration. The internal spline provides a rigid connection to the main shaft, preventing slippage and ensuring consistent torque transmission even under heavy loads.

Core Function

1. 1st/2nd Gear Synchronization: Works with the synchronizer ring to equalize the rotational speed of 1st/2nd gears and the main shaft, eliminating gear clash during shifting.

2. Smooth Gear Engagement: The helical tooth profile ensures gradual meshing with the sliding sleeve, reducing noise and vibration for a smoother driving experience.

3. Torque Transmission: Once synchronized, the gear locks onto the sliding sleeve, transferring torque from the main shaft to the output.

Synchronizer Gear 12JS200T-1701110 Fast Gear – Premium Gearbox Component for Heavy-Duty Trucks

When your transmission demands flawless shifting under extreme loads, the Synchronizer Gear 12JS200T-1701110 Fast Gear delivers exactly that. Engineered to meet OEM specifications for Fast Gearbox 12JS200T series transmissions, this synchronizer sleeve ensures smooth gear engagement, reduced wear, and extended service life. At Mettlead, we supply this critical gearbox component directly from our factory in China — giving you access to genuine-quality parts at competitive wholesale prices, without the middleman markup.

Whether you are maintaining a fleet of SINOTRUK HOWO trucks or sourcing replacement parts for SHACMAN heavy haulers, this synchronizer gear sleeve keeps your drivetrain running at peak efficiency. Let’s walk through exactly why this component earns the trust of procurement managers across Africa, the Middle East, Southeast Asia, and beyond.

Key Features and Benefits of Synchronizer Gear 12JS200T-1701110

Precision-Engineered for Seamless Shifting

The 12JS200T-1701110 synchronizer gear sleeve is designed to synchronize rotational speeds between gears during engagement. In simpler terms, it acts as the bridge that allows your driver to shift smoothly — even under heavy payloads and demanding terrain. Without a properly functioning synchronizer sleeve, gear grinding, missed shifts, and premature transmission failure become inevitable.

Built to OEM Standards

Every unit undergoes strict quality control during production. The tooth profile, hardness, and dimensional accuracy are all calibrated to match Fast Gear OEM requirements. As a result, you get a drop-in replacement that fits perfectly without modification, saving valuable workshop time and labor costs.

Superior Material Composition

Crafted from high-grade alloy steel with precision heat treatment, this synchronizer gear delivers exceptional wear resistance, fatigue strength, and impact toughness. Consequently, it handles the repetitive stress of thousands of daily gear changes without premature degradation.

Cost-Effective Factory Direct Pricing

Because Mettlead sources directly from certified manufacturers in China, you bypass distributors and enjoy factory-gate pricing. For fleet operators and spare parts distributors managing tight budgets, this translates into meaningful savings — especially on bulk orders.

Fast and Reliable Global Delivery

We understand that downtime costs money. That is why we maintain ready stock of high-demand parts like the 12JS200T-1701110 synchronizer gear, enabling quick dispatch and shorter lead times to your warehouse or workshop.

Technical Specifications – Synchronizer Gear 12JS200T-1701110

Application Scenarios – Where Does This Synchronizer Gear Fit?

The Synchronizer Gear 12JS200T-1701110 is specifically designed for the Fast Gear 12JS200T transmission, which is widely installed in the following heavy-duty truck platforms:

• SINOTRUK HOWO heavy-duty tractor heads and dump trucks
• SHACMAN (Shaanxi Auto) F3000, X3000 series trucks
• SITRAK C7H long-haul tractors
• FAW Jiefang J6P and J7 series
• DONGFENG Tianlong and Kinland heavy trucks
• FOTON Auman GTL and EST series

In essence, if your vehicle runs a Fast 12-speed transmission from the 12JS200T family, this synchronizer sleeve is your exact match. It is a critical wear component in the transmission’s synchronizer assembly, responsible for equalizing shaft speed during gear shifts. Fleet workshops handling routine gearbox overhauls will find this part indispensable for restoring smooth, reliable shifting performance.

Looking for more Fast Gearbox components? Browse our full range at our Fast Gearbox Parts category page.

OEM/ODM Capability and Custom Packaging

At Mettlead, we do more than just supply parts — we serve as your flexible sourcing partner. Here is what that means for your business:

• White-Label Packaging: Want to sell under your own brand? We offer custom packaging and labeling services so you can build your own aftermarket brand identity with confidence.
• Custom Packaging Solutions: From individual part boxes to bulk pallet packaging optimized for container shipping, we adapt to your logistics requirements.
• Strict Quality Control: Each batch of synchronizer gears passes through multiple inspection stages — dimensional measurement, hardness testing, and surface finish verification — before shipment approval.
• Factory Visits Welcome: We encourage procurement teams to visit our supply base in China for first-hand quality verification and relationship building.

For a complete overview of our gearbox parts catalog, including synchronizers, shafts, bearings, and gear sets, visit our Gearbox Parts brand page.

Customer Case Study – Synchronizer Gear 12JS200T-1701110 in Action

A fleet management company in East Africa operating over 200 SINOTRUK HOWO dump trucks approached Mettlead with a recurring problem: their drivers reported rough shifting and gear grinding after approximately 150,000 km of service. Upon inspection, worn synchronizer gear sleeves in the Fast 12JS200T gearbox were identified as the root cause.

After switching to our Synchronizer Gear 12JS200T-1701110 Fast Gear replacements, the client reported noticeably smoother gear engagement, reduced driver fatigue complaints, and a significant drop in repeat gearbox repairs. Moreover, the factory-direct pricing from Mettlead allowed them to stock synchronizer sleeves in advance — reducing vehicle downtime from an average of 5 days to under 48 hours for transmission overhauls.

Within six months, this client expanded their orders to include additional Fast Gearbox synchronizer components and other drivetrain parts, establishing Mettlead as their primary China-based spare parts supplier.

Frequently Asked Questions – Synchronizer Gear 12JS200T-1701110

What is the function of the Synchronizer Gear 12JS200T-1701110 in the transmission?

The synchronizer gear sleeve 12JS200T-1701110 enables smooth speed matching between the rotating gear and the output shaft during gear engagement. Without it, shifting would be rough, noisy, and damaging to internal transmission components. Think of it as the mediator that makes each gear change feel seamless.

How do I know if my Synchronizer Gear 12JS200T-1701110 needs replacement?

Common symptoms of a worn synchronizer sleeve include difficulty engaging specific gears, grinding noises during shifts, gear pop-out under load, and excessive play in the synchronizer assembly. If your driver notices any of these signs — particularly in the Fast 12JS200T gearbox — it is time to inspect and replace the synchronizer gear.

Is this synchronizer gear sleeve an exact OEM replacement?

Yes. The 12JS200T-1701110 synchronizer gear we supply is manufactured to match original Fast Gear specifications in terms of dimensions, material grade, heat treatment, and tooth geometry. It installs as a direct drop-in replacement without any modification required.

What is the expected service life of this synchronizer gear?

Under normal operating conditions and with proper driving habits, you can expect a service life comparable to OEM parts — typically 200,000 to 300,000 km depending on load conditions, road quality, and driver behavior. Regular gearbox oil changes and proper shift techniques also extend synchronizer longevity.

Can I order this part with custom branding or neutral packaging?

Absolutely. Mettlead offers white-label, custom-branded, and neutral packaging options for the Synchronizer Gear 12JS200T-1701110. This is especially popular among aftermarket distributors who want to build brand recognition in their local markets.

What is the minimum order quantity for the 12JS200T-1701110 synchronizer gear?

We offer flexible MOQ terms to suit both small workshop orders and large-scale fleet procurement. Please reach out to our team for specific pricing tiers based on your volume requirements.

Ready to Source Your Synchronizer Gear 12JS200T-1701110?

Stop letting transmission issues slow down your operations. Whether you need a single replacement unit or a bulk shipment of Synchronizer Gear 12JS200T-1701110 Fast Gear components for your distribution network, Mettlead is ready to deliver — with factory-direct pricing, strict quality assurance, and fast global logistics.

Get your personalized quote today. Send us your part number, required quantity, and destination, and our team will respond within 24 hours with pricing, lead time, and shipping options.

Contact Us Now to request a quote or ask any technical questions about the 12JS200T-1701110 synchronizer gear or any other Fast Gearbox parts.

Mettlead — Your Trusted China Source for SINOTRUK, SHACMAN, FAW, DONGFENG, FOTON & Fast Gear Truck Parts.