Product Introduction

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

• Performance: The cast iron flange provides robust structural reinforcement, while the extended steel sleeve shields the input shaft splines from dust and debris, preventing premature wear. The integrated design eliminates the need for a separate oil guide ring, simplifying installation.

Core Function

1. Dual Sealing & Protection: Seals the front of the 10-speed 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 & Support: The precision-machined sleeve supports the input shaft front bearing and spline section, maintaining concentricity and reducing vibration during high-speed rotation.

3. Structural Reinforcement: The rigid cast iron flange reinforces the transmission front housing, resisting deformation under medium-heavy load and vibration.

Input Shaft End Cover WG2222020101 – SINOTRUK HW Series Gearbox Parts

When it comes to keeping your SINOTRUK HW series gearbox running smoothly, every single component matters — especially the input shaft end cover. The Input Shaft End Cover WG2222020101 is a precision-engineered sealing component that protects the input shaft bearing assembly from contamination, lubricant leakage, and premature wear. Sourced directly from our factory in China, this genuine-spec part delivers the exact fitment and durability that fleet operators and distributors demand worldwide.

At Mettlead, we specialize in supplying authentic-grade SINOTRUK, HOWO, and HW gearbox components to wholesale distributors and aftermarket agents across Africa, the Middle East, Southeast Asia, and Latin America. Whether you need a single sample or a bulk order of thousands, our factory-direct model ensures you get the best pricing without sacrificing quality.

Why the Input Shaft End Cover WG2222020101 Matters for Your Gearbox

The input shaft end cover sits at the front end of the HW series transmission, forming a critical seal around the input shaft. Without a properly functioning end cover, your gearbox becomes vulnerable to oil leaks, dust ingress, and bearing failure — problems that lead to costly downtime and repairs.

Here is what makes our WG2222020101 input shaft end cover a smart investment for your inventory:

• Precise OEM-Spec Fitment: Manufactured to match the original SINOTRUK HW gearbox dimensions, so installation is seamless with no modifications required.
• Superior Sealing Performance: The machined mating surface and integrated oil seal groove ensure zero lubricant leakage, protecting internal gearbox components from wear.
• High-Grade Material Construction: Cast from durable aluminum alloy with heat treatment, providing excellent corrosion resistance and long service life even in harsh operating conditions.
• Extended Bearing Protection: By maintaining consistent lubrication around the input shaft bearing, this end cover helps prevent premature bearing failure — one of the most common gearbox issues in heavy-duty trucks.
• Wholesale-Ready Packaging: Available with white-label or custom packaging options, making it easy for distributors to resell under their own brand.

Application and Compatible Models

The Input Shaft End Cover WG2222020101 is specifically designed for the SINOTRUK HW series gearbox, which is one of the most widely used heavy-duty transmissions across Chinese truck platforms. This component fits the following applications:

• Gearbox Series: HW15710, HW19710, HW20716, and other HW series variants
• Compatible Truck Models: SINOTRUK HOWO A7, HOWO T7H, SITRAK C7H, and other heavy-duty models equipped with HW transmissions
• Function: Seals the input shaft front bearing chamber, retains gear oil, and prevents external contaminants from entering the gearbox
• Installation Position: Front end of the transmission housing, directly covering the input shaft bearing

If you are looking for additional gearbox transmission parts or need to browse our full range of SINOTRUK HOWO gearbox parts, we maintain a comprehensive inventory ready for immediate dispatch.

Technical Specifications – WG2222020101 Input Shaft End Cover

OEM/ODM Capability and White-Label Service

As a factory-direct supplier, Mettlead goes beyond simply selling parts. We understand that distributors and agents need flexibility to grow their own brands in local markets. That is why we offer comprehensive OEM and ODM services for the Input Shaft End Cover WG2222020101 and our entire gearbox parts catalog.

• White-Label Packaging: We supply neutral or custom-branded packaging featuring your company logo, part numbers, and barcode labels — ready for your shelves or warehouse.
• Custom Specifications: Need a slightly modified design or material grade for a specific market? Our engineering team can accommodate custom requests with reasonable MOQs.
• Strict Quality Control: Every input shaft end cover passes dimensional inspection, surface finish checks, and pressure sealing tests before shipment. We stand behind the consistency of our output.
• Flexible Order Quantities: Whether you are testing a new market with trial orders or placing large-volume repeat orders, we adapt to your business rhythm.

Explore our full catalog of SINOTRUK HOWO truck parts and spare parts to see the breadth of our product range.

Customer Case Study: Input Shaft End Cover WG2222020101 Bulk Supply to East Africa

In early 2024, a heavy truck parts distributor based in Nairobi, Kenya approached Mettlead with an urgent need. Their fleet maintenance clients were experiencing recurring gearbox oil leaks on SINOTRUK HOWO A7 trucks, and the root cause was traced back to worn-out input shaft end covers. They needed a reliable supply of Input Shaft End Cover WG2222020101 that met OEM specifications — and they needed it fast.

After verifying compatibility with their specific HW19710 gearbox models, we shipped an initial trial order of 200 pieces with neutral packaging. The customer reported zero fitment issues during installation, and the sealing performance matched the original factory parts perfectly. Within three months, they placed a follow-up order for 1,000 units with their own branded packaging.

Today, this distributor stocks WG2222020101 input shaft end covers as a core SKU in their SINOTRUK HW gearbox parts inventory, and they continue to reorder quarterly. Their feedback confirmed what we already knew: factory-direct sourcing through Mettlead delivers both price advantage and product reliability that keeps end users satisfied.

Frequently Asked Questions – Input Shaft End Cover WG2222020101

What is the function of the Input Shaft End Cover WG2222020101 in the HW gearbox?

The Input Shaft End Cover WG2222020101 serves as a precision sealing cap at the front of the SINOTRUK HW series gearbox. Its primary role is to retain gear oil inside the input shaft bearing chamber while preventing dust, water, and debris from entering. Without a functioning end cover, the input shaft bearing would lose lubrication and fail prematurely.

How do I know if my Input Shaft End Cover WG2222020101 needs replacement?

Common signs of a failing input shaft end cover include visible oil seepage at the front of the gearbox housing, unusual noise from the input shaft area, and oil contamination with metalite debris. Additionally, if you notice the gearbox oil level dropping without an obvious leak elsewhere, the end cover gasket or sealing surface may be compromised.

Is this WG2222020101 end cover compatible with all HW gearbox models?

Yes, the WG2222020101 is designed as a universal-fit input shaft end cover for the SINOTRUK HW series gearbox family, including HW15710, HW19710, and HW20716 transmissions. However, we always recommend cross-referencing the part number with your specific gearbox assembly diagram to confirm compatibility before ordering in bulk.

What material is the Input Shaft End Cover WG2222020101 made from?

Our WG2222020101 input shaft end cover is cast from heat-treated aluminum alloy. This material offers an ideal balance of lightweight construction, corrosion resistance, and structural strength. The sealing surface is precision-machined to ensure a flat, leak-proof contact with the gearbox housing.

Can I order the Input Shaft End Cover WG2222020101 with my own brand packaging?

Absolutely. Mettlead offers white-label and custom packaging services for all our gearbox parts, including the WG2222020101 input shaft end cover. You can provide your brand design, and we will package each piece with your logo, part numbers, and barcodes — fully ready for your distribution channel.

What is the minimum order quantity for wholesale pricing?

We maintain flexible MOQ policies to accommodate both new market entrants and established distributors. For the Input Shaft End Cover WG2222020101, trial orders start as low as 10–50 pieces, while bulk pricing tiers become available at higher volumes. Contact our sales team for a detailed quotation based on your target quantity.

Ready to Stock the Input Shaft End Cover WG2222020101? Let’s Talk.

If you are a wholesale distributor, aftermarket agent, or fleet parts buyer looking for a dependable source of SINOTRUK HW gearbox parts, you have found the right partner. Mettlead delivers factory-direct pricing, strict quality assurance, and responsive logistics support — everything you need to keep your supply chain running without interruption.

Here is how to get started:

1. Request a Quote: Tell us the part number (WG2222020101), your target quantity, and destination country.
2. Receive Your Proposal: We will respond within 24 hours with pricing, lead time, and shipping options.
3. Confirm and Ship: Once payment is confirmed through our secure channels, your order enters production and ships on schedule.

Contact Mettlead now to request your wholesale quotation for Input Shaft End Cover WG2222020101. Our team is ready to support your business with competitive pricing, reliable quality, and fast delivery — wherever you operate in the world.