Product Introduction

This rear cover is a key structural and sealing component of the transmission output section

• Structure & Material: Precision-cast from high-strength ductile iron, with an integrated annular design and multiple bolt holes for secure installation. The inner surface is precision-machined to match the output shaft bearing outer ring.

• Sealing Performance: Features an O-ring groove on the mating surface to prevent gear oil leakage, ensuring reliable sealing under high torque and vibration conditions.

• Structural Function: Provides rigid mounting support for the output shaft bearing, maintaining concentric alignment of the output shaft to reduce runout and noise.

Core Function

1. Bearing Mounting: Provides a rigid housing for the output shaft bearing, ensuring stable operation under high loads

2. Sealing: Prevents gear oil leakage from the rear of the output shaft, maintaining proper internal lubrication pressure

3. Alignment Support: Maintains concentric alignment of the output shaft, reducing vibration and extending bearing service life

4. Contamination Protection: Blocks external dust and water from entering the transmission, protecting internal components

Output Shaft Rear Cover WG2222100005 – SINOTRUK HW Series Gearbox

When your SINOTRUK HW series gearbox demands a reliable seal at the output shaft, the Output Shaft Rear Cover WG2222100005 delivers precision-engineered protection that keeps your drivetrain running smoothly. This genuine-spec gearbox component is designed to withstand the punishing conditions of heavy-duty trucking, ensuring oil stays where it belongs and contaminants stay out. Whether you are maintaining a fleet or sourcing parts for aftermarket distribution, this rear cover meets the exact dimensional and material standards required by SINOTRUK HW transmissions.

At Mettlead, we supply this output shaft rear cover directly from our factory network in China, giving you access to competitive pricing without compromising on quality. As a dedicated supplier of SINOTRUK, HOWO, SHACMAN, FAW, WEICHAI, DONGFENG, and FOTON truck parts, we understand what technical buyers expect: accurate specifications, consistent quality, and fast delivery.

Key Features and Benefits of Output Shaft Rear Cover WG2222100005

This output shaft rear cover does more than simply close off the back end of your gearbox housing. It plays a critical role in maintaining transmission integrity. Here is what makes this component stand out:

• Precise OEM Fitment – Manufactured to match the original SINOTRUK HW gearbox dimensions, so installation is straightforward with no modification required.
• Superior Sealing Performance – The machined mating surfaces and integrated seal grooves prevent lubricant leakage and block dust, moisture, and road debris from entering the transmission.
• High-Strength Material Construction – Cast from durable alloy that resists cracking, warping, and corrosion even under extreme thermal cycling and heavy vibration loads.
• Extended Service Life – Engineered to outlast substandard aftermarket alternatives, reducing unplanned downtime and repeat replacement costs.
• Bearing Support Accuracy – The rear cover provides a precise locating surface for the output shaft bearing, maintaining correct shaft alignment and reducing gear noise.
• Cost-Effective Factory-Direct Pricing – By sourcing directly through Mettlead, you eliminate unnecessary middlemen and get competitive unit costs, particularly on bulk orders.

In other words, this rear cover is not just a passive housing component. It actively contributes to gearbox longevity, noise reduction, and operational efficiency across every kilometer your truck travels.

Technical Specifications – WG2222100005 Output Shaft Rear Cover

For technical engineers evaluating this component, the following table outlines the critical parameters of the Output Shaft Rear Cover WG2222100005:

If you need additional dimensional data or material certification documents for the WG2222100005 output shaft rear cover, our technical team is ready to provide them upon request.

Application Scenarios – Where Does WG2222100005 Fit?

The Output Shaft Rear Cover WG2222100005 is specifically designed for the SINOTRUK HW series gearbox, which is widely used across heavy-duty commercial vehicles. Below are the primary application scenarios:

• Compatible Gearbox Models: HW15710, HW19710, HW15712, HW19712, and related HW series variants used in SINOTRUK vehicles.
• Compatible Vehicle Models: SINOTRUK HOWO A7, HOWO T7H, SITRAK C7H, SITRAK C5H, and other heavy trucks equipped with HW series transmissions.
• Use Case: Replacement during scheduled gearbox overhaul, repair after rear seal failure, or preventive maintenance when oil leakage is detected at the output shaft area.
• Industry Applications: Long-haul logistics fleets, mining transport operations, construction site heavy haulage, and municipal heavy vehicle maintenance workshops.

Essentially, wherever a SINOTRUK HW series gearbox is at work, this output shaft rear cover is a mission-critical part of the transmission assembly. Keeping a ready stock of WG2222100005 ensures minimal downtime when maintenance is required.

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

Mettlead understands that different markets have different branding requirements. That is why we offer flexible OEM and ODM services for the Output Shaft Rear Cover WG2222100005 and all our SINOTRUK HOWO truck parts:

• White-Label Packaging – We supply the part in neutral packaging so you can apply your own brand labels for resale in your local market.
• Custom Packaging Design – Need your company logo, part numbers, and barcodes printed on the box? We handle it.
• Strict Quality Control – Every output shaft rear cover passes dimensional inspection, surface finish checks, and material hardness verification before shipment.
• Flexible MOQ – Whether you need a single sample or a container load, we accommodate orders of all sizes.
• Technical Support – Our engineering team can assist with fitment verification, cross-referencing, and application guidance.

This means you can confidently build your own brand around genuine-quality SINOTRUK gearbox parts without investing in your own manufacturing infrastructure.

Customer Case Study – WG2222100005 Output Shaft Rear Cover in Action

A fleet maintenance company based in East Africa reached out to Mettlead after experiencing recurring oil leaks from the output shaft area on several SINOTRUK HOWO trucks equipped with HW19710 gearboxes. Their previous supplier had provided generic rear covers that did not seal correctly, leading to premature bearing failure and costly gearbox rebuilds.

After switching to the Output Shaft Rear Cover WG2222100005 sourced through Mettlead, the client reported a complete elimination of the sealing issue across their 40-truck fleet. The precise machining tolerances ensured proper mating with the gearbox housing, and the integrated seal groove maintained oil pressure within specification. Over twelve months, they documented zero repeat failures on the trucks fitted with our WG2222100005 rear covers.

Furthermore, the client took advantage of our custom packaging service, applying their own brand to the product for resale through their regional distribution network. Today, they order this output shaft rear cover alongside a full range of SINOTRUK HOWO gearbox parts from our catalog on a quarterly basis.

Frequently Asked Questions – Output Shaft Rear Cover WG2222100005

What is the function of the output shaft rear cover in a SINOTRUK HW gearbox?

The output shaft rear cover WG2222100005 serves as the closing plate at the rear of the HW series gearbox. It seals the output shaft bearing cavity, prevents lubricant from leaking out, blocks contaminants from entering the transmission, and provides a precise locating surface for the rear output shaft bearing. Without a properly functioning rear cover, your gearbox risks oil starvation, bearing damage, and eventual transmission failure.

Which gearbox models does the WG2222100005 output shaft rear cover fit?

This part is designed specifically for the SINOTRUK HW series gearbox family, including models such as HW15710, HW19710, HW15712, and HW19712. These transmissions are commonly found in HOWO A7, HOWO T7H, SITRAK C7H, and similar heavy-duty trucks. If you are unsure about compatibility with your specific gearbox variant, our technical team can help you verify the fitment.

What causes an output shaft rear cover to fail or require replacement?

Over time, the sealing surfaces of the rear cover can wear due to thermal expansion cycles, vibration fatigue, and exposure to road debris. Common signs that the WG2222100005 output shaft rear cover needs replacement include visible oil leakage around the rear output shaft area, unusual bearing noise from the transmission tail section, or physical damage such as cracks or corrosion discovered during routine gearbox inspection.

Is this output shaft rear cover an original OEM part or aftermarket?

Mettlead supplies OEM-equivalent output shaft rear covers manufactured to the same dimensional and material specifications as the original SINOTRUK factory part. Each WG2222100005 unit undergoes strict quality control including dimensional measurement, surface finish inspection, and material composition verification to ensure it performs identically to the genuine part.

Can I order the WG2222100005 in bulk with my own brand packaging?

Absolutely. We offer white-label and fully customized packaging options for the output shaft rear cover WG2222100005. This is especially popular with regional distributors and aftermarket parts retailers who want to sell under their own brand. Just let us know your packaging requirements when you submit your inquiry.

How should I install the output shaft rear cover WG2222100005 correctly?

Before installation, clean the mating surface on the gearbox housing thoroughly and inspect for any burrs or damage. Apply the recommended sealant or gasket as specified in the SINOTRUK HW gearbox service manual. Torque the mounting bolts evenly in a cross pattern to the manufacturer’s specified value. After installation, check for oil leaks during a brief test drive or bench run before returning the vehicle to service.

Browse More SINOTRUK Gearbox Parts

The Output Shaft Rear Cover WG2222100005 is just one component in our extensive catalog. If you are sourcing additional transmission parts, explore our full range of gearbox parts and components or browse all available SINOTRUK HOWO truck spare parts to find everything you need in one place.

Get a Quote for Output Shaft Rear Cover WG2222100005 Today

Ready to secure reliable pricing on the Output Shaft Rear Cover WG2222100005 for your SINOTRUK HW series gearbox? Whether you need a single unit for an urgent repair or a bulk shipment for your warehouse, Mettlead delivers factory-direct quality with fast turnaround times and flexible payment options.

Simply tell us your required quantity, preferred packaging, and destination, and we will respond with a competitive quotation within 24 hours. We also welcome you to visit our facility in China for an in-person inspection of our quality processes and inventory.

Contact us now to request your quote or ask any technical questions about the WG2222100005 output shaft rear cover. Our team is standing by to help you get the right part, at the right price, delivered on time.