Product Introduction

• Structure: An integral precision-forged gear made from high-strength alloy steel, with a straight-cut external tooth profile and a keyway bore for secure mounting on the countershaft. The tooth surface is carburized and hardened, then precision ground for smooth meshing. The gear features a robust, wide-face design for increased torque capacity, and a black oxide coating for corrosion resistance.

• Performance: The high-hardness tooth surface (HRC58-62) withstands the extreme torque and impact forces of heavy-duty operation, while the straight-cut tooth profile ensures efficient power transfer. The integral forging and wide-face design provide exceptional torsion resistance, preventing deformation or fracture under full load. The precision-ground teeth minimize backlash and ensure reliable meshing with mating gears.

Core Function

1. Torque Transfer: Transmits rotational torque from the main drive gear to subsequent gears in the countershaft train, facilitating gear ratio conversion and power distribution.

2. Heavy-Duty Load Handling: The high-strength alloy steel and wide-face design safely handle the extreme torque of heavy hauling, ensuring stable performance under full load.

Precision Meshing: The precision-ground teeth ensure minimal backlash and optimal gear contact, maximizing transmission efficiency and reducing power loss.

Gearbox Transmission Gear 12JS200T-1701056 Sinotruk – Factory Direct Supply by Mettlead

When your heavy-duty truck demands flawless power delivery, every single gear inside the transmission matters. The Gearbox Transmission Gear 12JS200T-1701056 is precision-engineered for Sinotruk vehicles equipped with FAST  gearboxes, ensuring smooth shifting, exceptional durability, and reliable torque transfer under the most demanding operating conditions. At Mettlead, we supply this critical transmission component directly from our factory in China — which means you get genuine quality at a competitive price, with no middlemen slowing things down.

Whether you are maintaining a fleet of HOWO tippers, SITRAK tractors, or other Sinotruk-platform vehicles, this transmission gear keeps your drivetrain running the way it should. Read on to discover the technical specifications, application details, and reasons why procurement managers across the globe trust Mettlead for their Sinotruk gearbox transmission gear needs.

Key Features and Benefits of the 12JS200T-1701056 Transmission Gear

This isn’t just another replacement part sitting on a shelf. The 12JS200T-1701056 gearbox gear is built to meet — and often exceed — original equipment standards. Here’s what sets it apart:

• OE-Grade Material Composition: Manufactured from high-strength alloy steel with carburized and hardened tooth surfaces, this gear resists wear, pitting, and fatigue even under continuous heavy loads.
• Precision Machining: CNC-ground teeth deliver tight tolerances that minimize backlash, reduce noise, and promote smoother gear engagement throughout the full RPM range.
• Perfect Fitment: Designed as a direct replacement for part number 12JS200T-1701056, so installation is straightforward — no modifications required.
• Extended Service Life: Thanks to superior heat treatment and surface finishing, this transmission gear delivers a long operational lifespan, which ultimately lowers your total cost of ownership.
• Factory Direct Pricing: By sourcing directly from Mettlead’s warehouse in China, you eliminate distributor markups while still receiving strict quality-controlled components.
• Fast Lead Times: We maintain stock of high-demand FAST gearbox parts like the 12JS200T-1701056, so your orders ship quickly and reliably.

Application Scenarios – Where Does the 12JS200T-1701056 Gear Fit?

Understanding exactly where this gear belongs is crucial for making the right purchasing decision. The Gearbox Transmission Gear 12JS200T-1701056 is specifically designed for the FAST 12JS200T series transmission, which is one of the most widely adopted gearbox platforms across Chinese heavy truck brands.

Compatible Vehicle Models

• Sinotruk HOWO – A7, T7H, and N7 series heavy-duty trucks
• Sinotruk SITRAK – C7H and G7 tractor units and cargo trucks
• Shacman (SHAANXI) – F3000, X3000, and H3000 models equipped with FAST 12-speed transmissions
• FAW Jiefang – J6P and J7 series trucks using compatible FAST gearbox variants
• Dongfeng – Select heavy-duty models paired with 12JS200T transmissions

In practical terms, if your truck uses a FAST 12JS200T gearbox — whether it’s hauling construction aggregates across African highways, transporting containers in Southeast Asian ports, or running long-distance logistics routes in the Middle East — this gear is your exact match. It works within the transmission’s gear train to transmit torque smoothly between input and output shafts, contributing directly to efficient power delivery from the engine to the drive axle.

For a broader selection of FAST gearbox components, visit our dedicated FAST Gearbox Parts category page. And if you need additional transmission system components beyond FAST, explore our full Gearbox Parts collection.

Technical Specifications

Accurate specifications are essential when you’re sourcing transmission gears for cross-border procurement. The table below provides the key parameters for the 12JS200T-1701056 Sinotruk gearbox transmission gear:

Note: If you need a specific dimensional drawing or additional gear parameters (module, number of teeth, face width), our engineering team can provide detailed technical data upon request.

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

We understand that every distributor and fleet operator has different branding requirements. That’s precisely why Mettlead offers flexible OEM and ODM services for the 12JS200T-1701056 gearbox transmission gear and our full catalog of Chinese truck parts:

• White-Label Packaging: Receive parts in neutral boxes with no supplier branding — ideal for distributors who sell under their own trade name.
• Custom Packaging: We can print your company logo, part numbers, barcodes, and safety information directly on the packaging to match your brand identity.
• Strict Quality Control: Every batch of transmission gears undergoes dimensional inspection, hardness testing, and visual examination before shipment. We maintain full traceability from raw material to finished product.
• Flexible Order Quantities: Whether you need a small trial order to test the market or a container-load shipment for your central warehouse, our production capacity adapts to your needs.
• Secure Payment Options: We support T/T, L/C, Western Union, and other internationally recognized payment methods — all formal, flexible, and secure.

In addition, Mettlead welcomes customers to visit our facilities in China for on-site inspection and quality auditing. Seeing is believing, and we’re confident our operation will meet your standards.

Customer Case Study – Gearbox Transmission Gear 12JS200T-1701056 in Action

Earlier this year, a fleet management company based in East Africa approached Mettlead with an urgent requirement. They were operating over 120 Sinotruk HOWO trucks on mining haul routes, and transmission gear failures were causing costly downtime. Specifically, they needed a reliable source of Gearbox Transmission Gear 12JS200T-1701056 Sinotruk parts that could withstand the extreme torque loads and dusty conditions of open-pit operations.

After receiving sample pieces for testing, their maintenance team confirmed that Mettlead’s 12JS200T-1701056 transmission gears matched OE quality in both dimensional accuracy and surface hardness. Within three weeks of the initial inquiry, we shipped 200 pieces via sea freight — complete with custom-branded packaging bearing their company logo.

Six months later, the results spoke for themselves: transmission-related downtime dropped by over 35%, and the client has since expanded their orders to include additional FAST gearbox components such as synchronizer rings, countershaft gears, and bearing assemblies. Today, they consider Mettlead their primary supplier for all Sinotruk gearbox transmission gear replacements.

This is the kind of long-term partnership we build — one precision gear at a time.

Frequently Asked Questions – 12JS200T-1701056 Gearbox Transmission Gear

1. What exactly is the 12JS200T-1701056, and what role does it play inside the transmission?

The 12JS200T-1701056 is a specific transmission gear within the FAST 12JS200T gearbox gear train. It meshes with corresponding gears on the mainshaft or countershaft to establish particular gear ratios. In simple terms, it’s one of the components that determines how engine power is converted into wheel-turning force at different speeds.

2. How can I verify that the 12JS200T-1701056 gear is compatible with my specific truck model?

The most reliable method is to confirm the transmission model stamped on your gearbox housing. If it reads “12JS200T” or a closely related variant, this gear will fit. Alternatively, you can cross-reference your vehicle’s VIN or existing parts list. Our team at Mettlead is happy to help you verify compatibility — just share your gearbox nameplate photo, and we’ll confirm within hours.

3. Is this transmission gear heat-treated, and what hardness should I expect?

Yes, absolutely. The 12JS200T-1701056 gear undergoes a full carburizing and quenching process, followed by precision grinding. The tooth surface hardness reaches HRC 58–63, while the core maintains HRC 30–45 for impact resistance. This combination gives you a hard, wear-resistant exterior with a tough, ductile interior — exactly what a heavy-load transmission gear needs.

4. How does this aftermarket gear compare to the original Sinotruk OEM part in terms of quality?

Mettlead’s 12JS200T-1701056 transmission gear is manufactured to OE-equivalent specifications. We use the same grade of alloy steel, the same heat treatment processes, and the same dimensional tolerances as the original equipment component. Many of our gears are produced in the same industrial cluster that supplies FAST gearbox assembly lines, so you can expect comparable — and sometimes superior — performance at a significantly lower cost.

5. What is the typical lifespan of this gearbox gear under normal operating conditions?

Under normal heavy-duty truck operating conditions — proper lubrication, correct shifting habits, and standard load profiles — the 12JS200T-1701056 gear can last between 200,000 to 400,000 kilometers. Variables such as overloading, poor-quality transmission oil, or aggressive driving can shorten this lifespan. Regular transmission fluid changes and periodic inspections help maximize gear longevity.

6. Can I order just one piece for testing, or is there a minimum order quantity?

We are flexible with order quantities. While we primarily serve B2B customers, we understand that procurement managers often need a sample or small trial batch before committing to volume orders. Contact our team to discuss your specific quantity requirements, and we’ll work out the best arrangement.

7. How should this transmission gear be stored before installation?

Store the gear in its original packaging in a dry, well-ventilated area away from direct moisture or corrosive chemicals. The gear surfaces are treated with a protective anti-rust coating for transit, but prolonged exposure to humidity without proper protection can promote surface corrosion. If stored for an extended period, apply a thin layer of anti-rust oil to the tooth surfaces.

Ready to Source Your 12JS200T-1701056 Gearbox Transmission Gear?

Downtime costs money — and the longer you wait for the right parts, the more it adds up. Mettlead is ready to deliver the Gearbox Transmission Gear 12JS200T-1701056 Sinotruk you need, backed by factory-direct pricing, strict quality control, and a logistics team that knows how to get parts to your doorstep quickly.

Here’s what to do next:

1. Send us your inquiry — include your required quantity, preferred delivery terms, and any packaging specifications.
2. Receive a detailed quotation — typically within 24 hours, complete with unit pricing, lead time, and shipping options.
3. Confirm and ship — once payment is arranged, your gears are inspected, packed, and dispatched promptly.

Don’t let transmission gear failures slow your fleet down. Contact us today to request a quotation or ask our technical team any questions about the 12JS200T-1701056 or any other FAST gearbox component. We’re here to keep your trucks moving.