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 for a hardness of HRC 58–62, ensuring extreme wear resistance. The surface is coated with a corrosion-resistant black oxide finish.

• 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.

Core Function

1. Speed Synchronization: Works with the synchronizer ring to equalize the rotational speed of the target gear and 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 JS135TA-1701030B Fast Gear – Premium Gearbox Replacement Part

When your heavy-duty truck’s transmission starts grinding or struggling between shifts, the synchronizer gear is often the culprit. The Synchronizer Gear JS135TA-1701030B Fast Gear is engineered to restore smooth, reliable gear engagement in Fast Gearbox systems — keeping your fleet moving and minimizing costly downtime. Manufactured to meet OEM specifications, this synchronizer gear sleeve delivers the precision fit and long-lasting durability that procurement managers demand.

At Mettlead, we supply this high-quality Fast Gearbox synchronizer gear directly from our factory in China, which means you get competitive pricing without sacrificing quality. Whether you’re maintaining a single vehicle or managing a fleet of SINOTRUK, SHACMAN, or FAW trucks, this component is built to perform under the toughest operating conditions.

Key Features and Benefits of JS135TA-1701030B Synchronizer Gear

Choosing the right synchronizer gear sleeve isn’t just about fit — it’s about performance, longevity, and total cost of ownership. Here’s why the JS135TA-1701030B Fast Gear synchronizer gear stands out:

• Precise OEM-Spec Manufacturing: Each synchronizer gear is produced to match original Fast Gearbox dimensions and tolerances, ensuring seamless installation and optimal meshing with existing transmission components.
• Superior Material Composition: Crafted from high-strength alloy steel with advanced heat treatment, this gear sleeve resists wear, fatigue, and deformation even under heavy torque loads.
• Smooth Shift Engagement: The precision-ground tooth profile promotes effortless synchronization, reducing driver fatigue and extending the service life of adjacent gearbox parts.
• Extended Service Life: Thanks to strict quality control at every production stage, this synchronizer gear consistently outlasts aftermarket alternatives, reducing replacement frequency and maintenance costs.
• Factory-Direct Pricing: By sourcing directly from Mettlead, you eliminate middlemen and enjoy wholesale-level pricing on genuine-quality Fast Gearbox components.
• Fast Global Shipping: Our logistics network ensures rapid, reliable delivery to workshops and distributors worldwide.

Technical Specifications – Synchronizer Gear JS135TA-1701030B

Below you’ll find the detailed parameters for this Fast Gearbox synchronizer gear. Accurate specs matter — especially when you’re matching parts to specific transmission assemblies.

Application Scenarios – Where Does JS135TA-1701030B Fit?

The Synchronizer Gear JS135TA-1701030B is specifically designed for Fast Gearbox (法士特) transmission systems. It serves as a critical synchronizer sleeve that enables smooth speed matching between gears during shifting. Here are the primary applications:

• Compatible Gearbox: Fast (法士特) JS135TA series transmissions and related variants
• Applicable Truck Brands: SINOTRUK HOWO, SHACMAN, FAW heavy-duty trucks, and other Chinese commercial vehicles equipped with Fast transmissions
• Use Case: Replacement of worn or damaged synchronizer gear sleeves during gearbox overhaul or routine transmission maintenance
• Operating Environment: Long-haul logistics, construction site transport, mining operations, and any demanding scenario where reliable gear shifting is essential

If your truck is experiencing hard shifting, gear clashing, or unusual noise during gear changes, a worn synchronizer gear sleeve like the JS135TA-1701030B is frequently the root cause. Timely replacement prevents cascading damage to the hub, blocking ring, and other expensive internal components.

Explore our full range of Fast Gearbox Parts or browse all available gearbox components for Chinese truck brands.

OEM/ODM Capability – Custom Packaging and Private Labeling

Mettlead understands that distributors and aftermarket brands need more than just parts — they need a supply partner that supports their brand identity. That’s exactly what we offer:

• White-Label Packaging: Receive the JS135TA-1701030B synchronizer gear in neutral boxes, ready for your own branding and distribution.
• Custom Packaging: We can print your company logo, part numbers, and branding directly on the packaging — helping you build brand recognition in your local market.
• Strict Quality Control: Every synchronizer gear undergoes dimensional verification, material testing, and surface inspection before shipment. You can trust that each piece meets the specifications your customers expect.
• Factory Visits Welcome: We encourage prospective partners to visit our facility in China to inspect production lines, quality systems, and inventory firsthand.
• Flexible Payment Terms: We support multiple secure payment methods to match your procurement requirements.

Customer Case Study – JS135TA-1701030B Synchronizer Gear in Action

A fleet maintenance company based in East Africa reached out to Mettlead after struggling to source reliable Synchronizer Gear JS135TA-1701030B Fast Gear replacements for their client’s SHACMAN trucks. Their previous supplier delivered inconsistent quality — some synchronizer gears wore out within weeks, causing repeated gearbox failures and expensive towing costs.

After switching to Mettlead as their synchronizer gear supplier, here’s what changed:

• The JS135TA-1701030B synchronizer gear sleeve fit perfectly without modification on the first installation attempt.
• Gearbox overhaul callbacks dropped by over 60% within six months, as the parts maintained proper tooth engagement far longer than the previous supplier’s product.
• The procurement manager appreciated our transparent pricing, fast DHL/sea freight delivery, and the option to use custom-branded packaging for their local distribution network.
• They now order regularly across multiple Fast Gearbox part numbers, consolidating their transmission parts sourcing with Mettlead.

This is the kind of partnership we build — not just selling a synchronizer gear, but providing consistent quality that protects your reputation and your customers’ trucks.

Frequently Asked Questions – Synchronizer Gear JS135TA-1701030B

What exactly does the JS135TA-1701030B synchronizer gear do inside the gearbox?

The synchronizer gear sleeve (also called a coupling sleeve) slides over the synchronizer hub to lock a specific gear to the output shaft. It equalizes the rotational speed between the shaft and the selected gear before engagement, which is what allows you to shift smoothly without grinding. When this sleeve wears out, you’ll notice hard shifting, gear clash, or inability to engage certain gears.

How can I confirm that JS135TA-1701030B is the correct part for my truck’s transmission?

The most reliable method is to check the part number stamped on the original synchronizer gear sleeve or reference your gearbox assembly manual. JS135TA-1701030B is designed for Fast JS135TA series transmissions. If you’re uncertain, send us your gearbox model number and VIN, and our technical team will cross-reference it for you.

What are the signs that a synchronizer gear sleeve needs replacement?

Common symptoms include difficulty engaging specific gears, grinding or crunching noise during shifts, gear pop-out under load, and excessive free play in the shift lever. If the sleeve teeth show visible rounding, chipping, or uneven wear during inspection, replacement is necessary to prevent further gearbox damage.

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

Yes. The JS135TA-1701030B is manufactured from carburized alloy steel with a surface hardness of HRC 58–62, matching the OEM material specification. This ensures comparable wear resistance and fatigue strength under real-world operating loads.

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

Absolutely. Mettlead offers flexible minimum order quantities so you can evaluate the fit, finish, and performance of the Synchronizer Gear JS135TA-1701030B Fast Gear before scaling up. We believe the product quality speaks for itself.

How is the synchronizer gear packaged for shipping?

Each gear sleeve is individually wrapped with anti-rust coating and protective packaging to prevent damage during transit. We offer neutral packaging by default, with white-label and custom-branded packaging options available for bulk orders.

Ready to Source Your JS135TA-1701030B Synchronizer Gear?

Stop overpaying for unreliable synchronizer gears through trading intermediaries. With Mettlead, you get factory-direct quality, transparent pricing, and a partner who understands the demands of heavy truck transmission maintenance.

Get a competitive quote today. Tell us your required quantity, preferred shipping method, and any custom packaging needs — we’ll respond with pricing and lead time within 24 hours.

Contact us now to request a quotation for the Synchronizer Gear JS135TA-1701030B Fast Gear, or ask our team any technical questions about gearbox parts compatibility.