Product Introduction

• Structure: An integrated assembly featuring a forged 20CrMnTi alloy steel input shaft, press-fit with multiple precision-machined gears (1st, 2nd, 3rd, and 4th gears). All gear teeth are carburized, quenched, and precision-ground, achieving a surface hardness of HRC 58–62and a core hardness of HRC 33–45. The shaft includes a splined end for clutch connection and precision journal surfaces for bearing support.

• Key Specifications:

• Material: 20CrMnTi carburized steel (shaft and gears)

• Surface treatment: Carburizing + quenching + gear grinding

• Spline: External involute spline (clutch connection)

• Gear cluster: Integrated 1st/2nd/3rd/4th gears

• Operating temperature: -40°C to +150°C

  • Performance: The press-fit gear cluster ensures rigid power transfer, while the hardened gear surfaces resist pitting and wear under high torque.

Core Function

1. Power Input: Transmits engine torque from the clutch into the transmission main box.

2. Multi-Gear Torque Transfer: The integrated gear cluster delivers torque to multiple countershaft gears, enabling engagement of 1st–4th forward gears.

3. Rigid Assembly: The press-fit design eliminates gear backlash and ensures zero-loss power transmission.

Input Shaft Assy AZ2203040205 – SINOTRUK HW Series Gearbox Replacement Part

When your SINOTRUK HW series gearbox demands a reliable input shaft assembly, the Input Shaft Assy AZ2203040205 delivers precision-engineered performance that keeps your heavy-duty fleet moving. Sourced directly from our factory in China, this genuine-spec transmission component is built to handle extreme torque loads while maintaining smooth power transfer from the clutch to the gearbox internals. Whether you’re managing a fleet of HOWO tippers or maintaining long-haul SITRAK tractors, this input shaft assy ensures your drivetrain stays in peak working condition.

At Mettlead, we specialize in supplying original-quality SINOTRUK truck parts at factory-direct prices — so you get the exact component you need without inflated middleman costs. Ready to secure your stock? Contact us today for a competitive quote and fast delivery.

Key Features and Benefits of Input Shaft Assy AZ2203040205

This SINOTRUK HW series gearbox input shaft assembly isn’t just a replacement part — it’s an investment in uptime. Here’s what sets it apart:

• OEM-Grade Precision: Manufactured to match the exact dimensional tolerances required by HW series gearboxes, ensuring seamless installation without modification.
• High-Strength Alloy Steel: Forged from premium alloy steel and heat-treated for exceptional fatigue resistance, even under continuous heavy-load operation.
• Optimized Spline Design: The input shaft splines are precision-cut to ensure tight, wobble-free engagement with the clutch disc and gear clusters, minimizing wear over time.
• Strict Quality Control: Every AZ2203040205 input shaft assy undergoes rigorous hardness testing, dimensional inspection, and surface finish verification before shipment.
• Direct Cost Savings: By purchasing directly from Mettlead’s supply chain, procurement managers typically save 20–35% compared to local distributors.
• White-Label and Custom Packaging Available: We offer neutral packaging or custom branding to suit your resale requirements.

In short, this input shaft assembly gives you the durability and fitment accuracy your workshop needs — while keeping your procurement budget under control.

Technical Specifications – Input Shaft Assy AZ2203040205

Below you’ll find the detailed parameters for this SINOTRUK HW series gearbox input shaft assembly. These specifications help you verify compatibility and plan your order with confidence:

If you need additional dimensions or tolerance data for this input shaft assy AZ2203040205, our technical team is ready to provide detailed drawings upon request.

Application Scenario – Where Does This Input Shaft Assy Fit?

The Input Shaft Assy AZ2203040205 is designed specifically for the SINOTRUK HW series gearbox — one of the most widely deployed heavy-duty transmissions across Africa, Southeast Asia, the Middle East, and Central Asia. Here’s where this part finds its home:

• SINOTRUK HOWO Dump Trucks – Commonly used in mining and construction haulage where peak torque is demanded shift after shift.
• SINOTRUK HOWO Tractor Heads – Long-distance logistics operations requiring thousands of gear changes per trip without failure.
• SITRAK C7H / C5H Series – Premium heavy-duty applications where gearbox reliability directly impacts delivery schedules.
• SINOTRUK Concrete Mixers & Special Vehicles – PTO-driven equipment that subjects the input shaft to frequent start-stop cycling and high inertial loads.

In every one of these scenarios, the input shaft assembly serves as the critical bridge between your engine’s power output and the gear train. A worn or damaged input shaft leads to gear clash, power loss, and eventually complete gearbox failure — making timely replacement essential for fleet uptime.

Explore our full range of gearbox parts and SINOTRUK HOWO gearbox components to find everything you need for a complete transmission overhaul.

OEM/ODM Capability – Custom Solutions for Your Market

Mettlead doesn’t just sell parts — we partner with distributors, fleet operators, and aftermarket brands to deliver tailored solutions:

• White-Label Packaging: Receive the Input Shaft Assy AZ2203040205 in unbranded boxes, ready for your own label and market positioning.
• Custom Branding: We can print your company logo, part number cross-references, and safety labels directly on the packaging.
• Bulk Order Flexibility: Whether you need 10 pieces for urgent stock replenishment or 500 pieces for annual procurement, our production lines scale to meet your timeline.
• Technical Documentation Support: We provide fitment guides, installation notes, and cross-reference charts to help your sales team close more deals.

Our factory-direct model means there’s no guesswork in the supply chain. You’re dealing with the source — and that means faster lead times, consistent quality, and transparent pricing on every Input Shaft Assy AZ2203040205 order.

Customer Case Study – AZ2203040205 Input Shaft Assy in Action

Earlier this year, a fleet maintenance company in East Africa reached out to Mettlead with an urgent problem. They managed over 120 SINOTRUK HOWO dump trucks operating in a large-scale mining project, and recurring input shaft failures in their HW series gearboxes were causing costly downtime — sometimes three to four trucks offline simultaneously.

After reviewing their situation, we supplied a batch of Input Shaft Assy AZ2203040205 units along with matching pilot bearings and seal kits. Our technical team also provided torque specifications and installation guidelines tailored to their workshop conditions.

The results spoke for themselves: within three months, gearbox-related downtime dropped by over 60%. The procurement manager noted that the factory-direct pricing from Mettlead saved them approximately 30% compared to their previous regional supplier — while the parts arrived in just 12 days via sea-air combination shipping.

Today, that same client orders their full range of SINOTRUK HOWO truck parts exclusively through Mettlead, including gearbox shafts, synchronizers, and clutch components.

Frequently Asked Questions – Input Shaft Assy AZ2203040205

What gearbox models does the Input Shaft Assy AZ2203040205 fit?

This input shaft assembly is designed for SINOTRUK HW series gearboxes, including the HW15710, HW19710, and HW19712 models. It’s commonly found in HOWO, SITRAK, and Steyr-based heavy trucks. However, we always recommend confirming your gearbox model number before ordering to ensure a perfect match.

How can I verify that AZ2203040205 is the correct part number for my gearbox?

The most reliable method is to check the nameplate on your existing gearbox housing — it will display the transmission model number. You can also cross-reference the old input shaft’s part number stamping. If you’re still unsure, send us your VIN or gearbox photos and our team will confirm compatibility within 24 hours.

What causes premature input shaft failure in HW series gearboxes?

Several factors contribute to early wear: misaligned clutch assemblies that create uneven radial loads, insufficient gearbox oil levels causing spline surface scuffing, worn pilot bearings that allow shaft run-out, and aggressive driving habits such as riding the clutch under load. Replacing the input shaft assy alongside the pilot bearing and clutch disc helps prevent recurring failures.

Is this Input Shaft Assy AZ2203040205 an original part or aftermarket?

Mettlead supplies OEM-equivalent parts manufactured to the same material specifications, heat treatment processes, and dimensional tolerances as the factory original. This means you get identical performance and fitment at a significantly lower procurement cost compared to OE-branded inventory.

What is the typical lead time for bulk orders of AZ2203040205?

For standard stock quantities (1–20 pieces), we typically ship within 3–5 business days. Larger bulk orders of 50+ units may require 10–15 days for production and quality inspection. We also offer expedited air freight for urgent needs — just let our sales team know your timeline when requesting a quote.

Should I replace any related components when installing a new input shaft assy?

Yes — for best results, we recommend inspecting and potentially replacing the input shaft pilot bearing, the front gearbox oil seal, and the clutch driven disc at the same time. Worn bearings and seals can accelerate damage to a new input shaft, so proactive replacement protects your investment and extends service intervals.

Get Your Input Shaft Assy AZ2203040205 Quote Today

Downtime costs money — and waiting for the right gearbox parts shouldn’t slow your operation down. Mettlead delivers the Input Shaft Assy AZ2203040205 for SINOTRUK HW series gearboxes with factory-direct pricing, strict quality assurance, and reliable global shipping to your door.

Here’s what happens when you reach out:

1. Tell us your required quantity and delivery destination.
2. Receive a detailed quotation within 12 hours — including shipping options.
3. Confirm your order with flexible, secure payment methods.
4. Track your shipment from our warehouse to your facility.

Whether you need a single input shaft assy for an emergency repair or a full container of SINOTRUK gearbox parts for annual stock, we’re ready to support your business.

Contact Mettlead now to request pricing on Input Shaft Assy AZ2203040205 and discover why procurement managers across 30+ countries trust us as their go-to SINOTRUK parts supplier.