Product Introduction

• Structure: An integrated one-piece design, consisting of a ductile cast iron mounting flange and an extended steel guide sleeve. The hexagonal flange has 6 bolt holes for secure attachment, and the central guide sleeve extends forward to surround the input shaft’s splined section, providing both radial support and a dust seal.

• Key Specifications:

• Material: Ductile cast iron (flange) + 45# steel (guide sleeve)

• Mounting: 6-point M10 bolted connection

• Surface treatment: Anti-rust black oxide (flange) + precision grinding (sleeve)

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

Core Function

1. Dual Sealing & Protection: Seals the front of the transmission main box to prevent oil leakage, and the extended sleeve shields the input shaft splines from road debris and moisture.

2. Input Shaft Guidance: The precision-machined guide sleeve provides radial support for the input shaft’s front section, maintaining concentricity and reducing vibration during high-speed rotation.

3. Simplified Assembly: The integrated design combines the end cover and guide sleeve into one part, eliminating the need for a separate oil guide ring and reducing installation steps.

Input Shaft End Cover AZ2203020108 – SINOTRUK HW Series Gearbox Parts

When your SINOTRUK HW series gearbox demands a precise, factory-grade seal at the input shaft, the Input Shaft End Cover AZ2203020108 delivers exactly that. Engineered to match OEM specifications, this gearbox end cover keeps lubricant where it belongs, protects internal bearings from contaminants, and ensures your heavy-duty drivetrain operates at peak efficiency. Whether you are maintaining a fleet of HOWO trucks or stocking your workshop for urgent repairs, this genuine-spec component eliminates guesswork and reduces costly downtime.

At Mettlead, we supply this input shaft end cover directly from our factory network in China—giving procurement managers like you access to competitive pricing, fast lead times, and the quality assurance that comes from strict inspection at every stage. Browse our full range of SINOTRUK HOWO truck parts or explore our dedicated gearbox parts category for related components.

Key Features and Benefits of the Input Shaft End Cover AZ2203020108

This isn’t just a cover—it’s a critical barrier that protects the entire input shaft assembly inside your HW series gearbox. Here’s why fleet operators and distributors trust this part:

• Precision OEM Fit: Manufactured to match original SINOTRUK dimensions, so installation is seamless with no modifications required.
• Superior Sealing Performance: The machined mating surface prevents gear oil leakage at the input shaft opening, maintaining optimal lubrication levels inside the transmission housing.
• High-Grade Material Construction: Produced from durable cast alloy that withstands thermal cycling, vibration, and the constant pressure changes within a heavy-duty gearbox environment.
• Contaminant Protection: Acts as a robust shield against dust, water ingress, and road debris—extending bearing life and reducing internal wear.
• Extended Service Life: Strict quality control during production ensures consistent wall thickness and surface finish, meaning fewer replacements over the truck’s lifespan.
• Cost-Effective Maintenance: Factory-direct pricing from Mettlead keeps your per-unit cost low, especially valuable for bulk procurement and fleet-level maintenance programs.

In short, the AZ2203020108 input shaft end cover keeps your SINOTRUK HW gearbox sealed, quiet, and running reliably—mile after mile.

Application and Vehicle Compatibility

The Input Shaft End Cover AZ2203020108 is specifically designed for the SINOTRUK HW series manual transmission. This gearbox family is widely used across multiple heavy truck platforms, making this end cover a high-demand component in global aftermarket supply chains.

Compatible Vehicles and Gearbox Models

• SINOTRUK HOWO A7 heavy-duty trucks equipped with HW19710 / HW19712 transmissions
• SINOTRUK HOWO 6×4 and 8×4 tractor heads with HW series gearboxes
• SINOTRUK SITRAK C7H series using HW gearbox variants
• Various SINOTRUK dump trucks, mixer trucks, and cargo trucks fitted with HW manual transmissions

Because the HW gearbox platform is shared across many SINOTRUK models, this single part number—AZ2203020108—serves a broad range of vehicles in construction, mining, long-haul logistics, and urban delivery operations. For more SINOTRUK gearbox components, visit our SINOTRUK HOWO gearbox parts page.

Technical Specifications

Accurate specs matter when you are cross-referencing parts or confirming compatibility. Below is the detailed specification table for the Input Shaft End Cover AZ2203020108:

OEM/ODM Capability and Custom Packaging

Mettlead understands that every distributor and fleet operator has different branding and packaging requirements. That’s why we offer flexible OEM and ODM services for the Input Shaft End Cover AZ2203020108 and all our SINOTRUK gearbox parts:

• White-Label Packaging: Receive parts in neutral boxes with no supplier branding—ideal for resellers who want to apply their own identity.
• Custom Packaging: Add your company logo, part number labels, barcodes, and multilingual documentation to every box.
• Bulk and Pallet Packaging: Engineered packaging solutions for large-volume orders that protect components during ocean freight and reduce handling damage.
• Private Labeling: We can laser-engrave or print your brand directly on the part surface upon request.

Additionally, our quality control team inspects every input shaft end cover for dimensional accuracy, surface defects, and material integrity before shipment. You can even visit our facility in China to audit our processes firsthand—we welcome factory inspections from serious buyers.

Customer Case Study: Bulk Gearbox Parts Order for East African Distributor

One of our long-standing clients—a heavy truck parts distributor based in Tanzania—approached us with an urgent requirement for Input Shaft End Cover AZ2203020108 along with several other SINOTRUK HW series gearbox components. Their local market depended heavily on HOWO trucks for mining and construction logistics, and frequent gearbox maintenance meant consistent demand for this particular end cover.

After confirming specifications, we shipped 500 pieces of the AZ2203020108 input shaft end cover within 12 days, packed in custom-branded boxes per the client’s request. The parts passed their incoming quality inspection with zero rejects. Since that initial order, this distributor has placed repeat orders every quarter—proof that consistent quality and reliable delivery build lasting partnerships.

If you are sourcing SINOTRUK HW gearbox input shaft end covers for your own market, we are ready to support you with the same level of commitment.

Frequently Asked Questions (FAQ)

What is the function of the Input Shaft End Cover AZ2203020108 in the HW gearbox?

The input shaft end cover sits at the front of the gearbox housing and seals the input shaft bearing cavity. Its primary role is to retain gear oil within the transmission, prevent external contaminants from reaching the bearings, and support the structural integrity of the input shaft assembly. Without a properly sealed end cover, you risk oil leaks, accelerated bearing wear, and eventual gearbox failure.

How do I confirm that AZ2203020108 is the correct part number for my truck?

The most reliable method is to check the gearbox nameplate on your SINOTRUK HW transmission—it will list the gearbox model number (such as HW19710). Cross-reference that with the OEM parts catalog for your specific truck model. Alternatively, you can send us your VIN or gearbox serial number, and our technical team will verify compatibility for you.

What causes an input shaft end cover to fail or need replacement?

Common causes include: worn or damaged O-ring seals allowing oil seepage, impact damage from road debris, corrosion from prolonged exposure to moisture, overtightening of mounting bolts causing cracks, and normal fatigue after extended high-mileage service. If you notice oil wetness around the front of your gearbox, inspecting this end cover should be your first step.

Is this part an OEM original or aftermarket?

Mettlead supplies OEM-spec aftermarket parts manufactured to the same dimensional and material standards as the original SINOTRUK component. Every piece undergoes strict quality control including CMM dimensional checks. The result is a part that fits and performs identically to the original—at a significantly lower cost.

Can I order the Input Shaft End Cover AZ2203020108 in small quantities?

Yes. While we offer the best per-unit pricing on bulk orders, we accommodate smaller quantities for workshop operators and small-scale distributors. There is no rigid minimum order—just contact us with your required quantity and we will provide a tailored quotation.

How should I store this end cover before installation?

Keep the part in its original packaging, stored in a cool, dry environment away from direct sunlight and moisture. The anti-corrosion coating protects the machined surfaces during storage, but prolonged exposure to humidity can still degrade the sealing surface over time. For best results, install within 12 months of receipt.

Ready to Secure Your Supply of Input Shaft End Cover AZ2203020108?

Getting a competitive quote is simple. Tell us your required quantity, preferred packaging, and delivery destination—our team will respond within 24 hours with pricing, lead time, and shipping options. Whether you need 10 pieces or 10,000, Mettlead has the inventory depth and production capacity to fulfill your order on schedule.

Contact us now to request a quotation for the Input Shaft End Cover AZ2203020108 for SINOTRUK HW series gearbox. Let’s build a reliable supply chain together.