Product Introduction

• Structure: An integral precision-forged component made from high-strength nickel-chromium alloy steel, featuring a helical external tooth profile and an internal spline hub. The tooth surface undergoes carburizing, quenching, and precision grinding for a hardness of HRC 58–62, ensuring extreme wear resistance. The reinforced hub design enhances torque capacity, and 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 integral forging and reinforced hub prevent deformation under heavy loads, and the precision-ground teeth minimize backlash to maximize power transfer efficiency.

Core Function

1. Auxiliary Box Power Input: Transmits torque from the main transmission output shaft to the auxiliary gearbox, enabling high/low range switching.

2. High-Range Torque Transfer: Drives the high-range gear train to deliver overdrive ratios for efficient highway cruising.

3. Heavy-Duty Durability: Withstands frequent range shifts and extreme torque in heavy hauling, long-haul, and off-road conditions.

Transmission Auxiliary Gearbox Drive Gear JS119-1707030B – Fast Gearbox Replacement Part

When your heavy-duty truck’s auxiliary gearbox starts showing signs of wear, every hour of downtime cuts into your bottom line. The Transmission Auxiliary Gearbox Drive Gear JS119-1707030B is a precision-engineered Fast Gearbox component designed to restore smooth power transfer and keep your fleet running at full capacity. Sourced directly from Mettlead’s factory in China, this drive gear delivers OEM-grade performance at a fraction of the cost — without compromising on durability or fitment accuracy.

Why Choose the JS119-1707030B Auxiliary Gearbox Drive Gear?

This isn’t just another replacement part sitting on a shelf. The JS119-1707030B drive gear is manufactured under strict quality control protocols, ensuring each tooth profile, surface hardness, and dimensional tolerance meets the exact specifications required by Fast Gearbox transmission systems. Here’s what that means for your operations:

• Precise OEM Fitment: Engineered to match original factory dimensions, so installation is seamless with no modifications required.
• Superior Load Capacity: Heat-treated alloy steel construction withstands the extreme torque demands of heavy-duty auxiliary gearbox applications.
• Extended Service Life: Advanced carburizing and quenching processes produce a hardened gear surface that resists pitting, scoring, and premature wear.
• Reduced Noise and Vibration: Precision-ground tooth profiles ensure smooth meshing, minimizing operational noise inside the transmission housing.
• Factory-Direct Pricing: By eliminating middlemen, Mettlead delivers genuine quality at competitive wholesale rates ideal for fleet managers and procurement teams.

In other words, you get a drive gear that performs like the original but arrives faster and costs less — a combination that procurement managers genuinely appreciate when managing tight maintenance budgets.

Technical Specifications – JS119-1707030B Fast Gearbox Drive Gear

Accuracy matters when you’re sourcing transmission components. Below you’ll find the detailed parameters for this auxiliary gearbox drive gear:

Need to verify cross-references or confirm compatibility with a specific Fast Gearbox model? Our technical team can provide detailed matching support before you place an order.

Application Scenarios – Where Does the JS119-1707030B Fit?

The JS119-1707030B Transmission Auxiliary Gearbox Drive Gear is specifically designed for Fast Gearbox (法士特) transmission systems widely used across Chinese heavy-duty truck platforms. It serves as the primary drive gear within the auxiliary gearbox section, transferring power from the main gearbox assembly to the output shaft.

Compatible Vehicle Brands and Models

• SINOTRUK HOWO heavy-duty trucks equipped with Fast 9/10/12-speed transmissions
• SHACMAN F2000, F3000, X3000 series with Fast Gearbox configurations
• FAW Jiefang J6, J7 models using Fast transmission variants
• FOTON Auman heavy truck series with compatible Fast Gearbox
• DONGFENG Tianlong and Tianjin series with Fast auxiliary gearbox systems
• SITRAK C7H series configured with Fast Gearbox drivetrains

Whether you’re maintaining a long-haul logistics fleet or servicing construction and mining trucks, this drive gear fits right into your existing Fast Gearbox auxiliary assembly. It’s a direct swap — remove the worn gear, install the JS119-1707030B, and your transmission is back in service.

Looking for more Fast Gearbox components? Browse our complete Fast Gearbox Parts catalog for shafts, synchronizers, bearings, and more.

OEM/ODM Capability – Custom Packaging and White-Label Solutions

Mettlead understands that distributors and aftermarket brands have unique packaging and branding requirements. That’s why we offer flexible OEM and ODM services for the JS119-1707030B and our entire gearbox parts range:

• White-Label Packaging: Your brand, your logo, your identity — printed on every box that leaves our facility.
• Custom Packaging Design: From individual blister packs to bulk industrial cartons, we adapt packaging to your market needs.
• Private Label Programs: Build your own branded parts line without the factory overhead. We handle production; you handle distribution.
• Flexible MOQ: Whether you need 50 pieces for a trial order or 5,000 for quarterly stock, our production capacity scales to match your demand.
• Quality Documentation: COA, inspection reports, and material certifications provided upon request for every batch.

Every gear leaves our production line only after passing dimensional inspection, hardness testing, and surface finish verification. Strict quality control isn’t a marketing phrase here — it’s a manufacturing requirement.

Customer Case Study – Fleet Maintenance Company in East Africa

A fleet maintenance company managing over 200 SINOTRUK HOWO trucks across East Africa reached out to Mettlead after experiencing recurring failures with their transmission auxiliary gearbox drive gears. Their previous supplier’s parts were lasting barely 40,000 km before showing signs of tooth surface pitting.

After switching to our JS119-1707030B Fast Gearbox drive gear, the results spoke for themselves. The replacement gears consistently achieved over 120,000 km of service before requiring inspection, which effectively tripled the maintenance interval for their auxiliary gearbox assemblies. Moreover, delivery lead time dropped from six weeks to just twelve days thanks to Mettlead’s ready-stock inventory and streamlined logistics.

The client’s procurement manager noted that the combination of factory-direct pricing, reliable product performance, and responsive technical support made Mettlead their preferred long-term supplier for all Fast Gearbox transmission parts. Today, they source not only drive gears but also synchronizer assemblies, output shafts, and bearing kits from our facility — consolidating their supply chain under one dependable partner.

Frequently Asked Questions – JS119-1707030B Drive Gear

What is the function of the auxiliary gearbox drive gear JS119-1707030B?

The JS119-1707030B serves as the primary drive gear in the auxiliary (rear) section of Fast Gearbox transmissions. It transfers rotational power from the main gearbox section to the auxiliary output assembly, enabling the range-shifting function that gives Fast transmissions their multi-speed capability. When this gear wears out, you’ll typically notice difficulty engaging high/low range or unusual grinding noises from the rear of the transmission housing.

How do I know if my auxiliary gearbox drive gear needs replacement?

Common symptoms include increased transmission noise (particularly a whining sound in certain gear ranges), difficulty shifting between high and low range, metal particles in the transmission oil during regular fluid changes, and visible tooth wear or pitting upon inspection. If your Fast Gearbox has accumulated significant mileage — typically beyond 300,000 km under heavy loads — a proactive inspection of the JS119-1707030B is strongly recommended.

Is the JS119-1707030B compatible with all Fast Gearbox models?

The JS119-1707030B is designed for specific Fast Gearbox variants that use this particular auxiliary drive gear configuration. While it fits many 9-speed, 10-speed, and 12-speed Fast transmissions installed in HOWO, SHACMAN, FAW, and DONGFENG trucks, we always recommend confirming your exact transmission model number before ordering. Our technical team can verify compatibility within 24 hours — simply provide your gearbox nameplate data.

What material is the JS119-1707030B drive gear made from?

This gear is forged from high-strength alloy steel, then undergoes a carburizing and quenching heat treatment process. The result is a hard, wear-resistant surface layer (HRC 58–62) combined with a tough, shock-absorbing core (HRC 30–42). This dual-hardness structure is essential for gears that must withstand both high-torque loading and repeated impact cycles during range shifting.

Can I order the JS119-1707030B with my own brand packaging?

Absolutely. Mettlead offers full white-label and custom packaging services for all transmission components, including the JS119-1707030B auxiliary gearbox drive gear. You provide your branding artwork, and we handle the rest — from printing to final packaging. This service is particularly popular among regional distributors building their own aftermarket parts brands.

What is the typical lead time for bulk orders?

For standard stock items like the JS119-1707030B, lead time is typically 7–15 days depending on order quantity. Large volume orders (1,000+ pieces) may require 20–30 days for production scheduling. We maintain ready stock for fast-moving Fast Gearbox components, so smaller orders often ship within one week of payment confirmation.

Ready to Source Your JS119-1707030B Drive Gear? Let’s Talk.

Every day your trucks sit idle waiting for parts is a day of lost revenue. Mettlead keeps the Transmission Auxiliary Gearbox Drive Gear JS119-1707030B in stock and ready to ship, backed by factory-direct pricing that protects your maintenance budget.

Whether you need a single piece for an urgent repair or a bulk quantity for quarterly stock replenishment, our team responds to inquiries within 24 hours with pricing, availability, and delivery options tailored to your location.

• Get a competitive quote with volume-based pricing
• Receive technical compatibility confirmation for your specific Fast Gearbox model
• Discuss white-label packaging options for your brand
• Arrange factory visits to inspect our quality control process firsthand

Contact us today to request a quote or ask our technical specialists any questions about the JS119-1707030B or any other Fast Gearbox transmission component. Your fleet deserves parts that perform — and a supplier that delivers.