Product Introduction

This end cover is a key transmission sealing component, designed to protect the output shaft and its supporting bearings.

• Structure & Material: Precision-cast from high-strength ductile iron, with a sealed integral design and four mounting holes for secure bolted installation.

• Sealing Performance: Equipped with an integrated O-ring groove to prevent gear oil leakage, ensuring reliable sealing under high vibration and temperature conditions.

• Protective Function: Blocks dust, water, and external contaminants from entering the transmission, while maintaining the internal lubrication environment of the output shaft and bearings.

• Compatibility: Direct OE replacement, fully matching the mounting interface of the HW19710 transmission right output shaft.

Core Function

1. Sealing: Prevents gear oil leakage from the output shaft end, maintaining proper lubrication pressure.

2. Protection: Shields the output shaft and bearings from external contaminants, reducing wear and extending service life.

3. Structural Support: Provides auxiliary support for the output shaft bearing, improving system rigidity.

Output Shaft End Cover WG2222000001 – SINOTRUK HW Series Gearbox Parts

When your SINOTRUK HW series gearbox demands a reliable seal at the output shaft, the Output Shaft End Cover WG2222000001 steps in as a critical guardian. This precision-engineered component prevents lubricant leakage, shields internal gears from contaminants, and ensures your heavy-duty transmission operates at peak efficiency mile after mile. As a factory-direct supplier, Mettlead delivers this genuine-spec gearbox end cover at wholesale pricing that protects your margins just as well as the cover protects your gearbox.

Why This Output Shaft End Cover Matters for Your Fleet

The output shaft end cover isn’t just a simple cap — it’s a hardworking seal that sits at one of the most vulnerable points of the HW series gearbox. Without a properly fitted end cover, gear oil escapes, dirt intrudes, and costly transmission failures follow. Here’s what makes the WG2222000001 end cover a smart investment for wholesale buyers:

• Precision Sealing Performance: Machined to OEM tolerances, this end cover creates a tight, leak-free seal around the output shaft, keeping gear oil where it belongs and contaminants out.
• Durable Material Construction: Manufactured from high-strength alloy that resists heat cycling, vibration fatigue, and corrosion — even under the punishing conditions of heavy-load haulage.
• Direct OEM Replacement: Drops straight into all SINOTRUK HW series gearboxes without modification, saving workshop time and reducing installation errors.
• Extended Gearbox Lifespan: By maintaining proper lubrication containment, this single component helps protect the entire transmission assembly from premature wear.
• Wholesale-Friendly Pricing: Factory-direct sourcing from China eliminates middlemen, giving distributors and agents a competitive landed cost that boosts per-unit profit.

Application Scenarios – Where Does the WG2222000001 Fit?

The Output Shaft End Cover WG2222000001 is specifically engineered for the SINOTRUK HW series gearbox family. Consequently, it finds its home in a broad range of heavy-duty vehicles and applications:

• SINOTRUK HOWO A7 / T7H Tractor Trucks – long-haul logistics fleets relying on HW19710 and HW19712 transmissions.
• SINOTRUK SITRAK C7H Heavy Trucks – premium highway tractors equipped with HW series automated and manual gearboxes.
• HOWO Dump Trucks & Mixer Trucks – construction and mining vehicles subjected to extreme torque loads and frequent gear shifts.
• Special-Purpose Vehicles – concrete pump trucks, crane carriers, and tanker trucks built on SINOTRUK chassis platforms.

In short, wherever a SINOTRUK HW series gearbox is at work, the WG2222000001 output shaft end cover is an essential maintenance and repair component. Fleet managers across Africa, the Middle East, Southeast Asia, and South America keep this part in stock because downtime costs far more than prevention.

Technical Specifications – Output Shaft End Cover WG2222000001

OEM/ODM Capability & Custom Packaging

Mettlead understands that wholesale distributors and regional agents often need more than just a part — they need a brandable product that fits their market identity. That’s why we offer flexible OEM and ODM services for the WG2222000001 output shaft end cover and our entire SINOTRUK HOWO gearbox parts catalog:

• White-Label Packaging: Receive products in plain, unbranded boxes ready for your own labeling — ideal for agents building private-label inventory.
• Custom Branded Packaging: We print your logo, part numbers, and branding directly onto boxes and labels, so products arrive market-ready.
• Tailored Quality Tiers: Choose from OEM-grade, aftermarket-standard, or economy-grade specifications depending on your target market positioning.
• Flexible MOQ: We work with both large-volume importers and growing distributors testing new markets — minimums are negotiable.
• Factory Inspection Welcome: We invite partners to visit our facility in China for on-site quality audits and relationship building.

Every output shaft end cover passes through our strict quality control process — including dimensional inspection, surface finish verification, and material hardness testing — before it leaves our warehouse.

Customer Case Study – Bulk Order for East African Distributor

In early 2024, a leading truck parts distributor based in Dar es Salaam, Tanzania, reached out to Mettlead with an urgent need. Their fleet maintenance clients were experiencing repeated gearbox oil leaks traced back to low-quality output shaft end covers sourced from unreliable suppliers. They needed a dependable source for genuine-spec WG2222000001 end covers compatible with the SINOTRUK HW series gearboxes powering their region’s logistics backbone.

After reviewing our product samples and factory QC reports, the distributor placed an initial trial order of 200 units of the Output Shaft End Cover WG2222000001. Within three weeks, the shipment cleared Dar es Salaam port. Feedback from workshop technicians confirmed perfect fitment, zero oil leakage post-installation, and material quality on par with original SINOTRUK specifications.

As a result, this partner now orders quarterly — averaging 500+ gearbox components per shipment, including end covers, synchronizer rings, and output shaft assemblies. Their after-sales complaint rate on SINOTRUK HW gearbox parts dropped by over 60%, and their per-unit margins improved thanks to our factory-direct pricing structure.

This is exactly the kind of long-term partnership we build at Mettlead — and it all started with one well-made output shaft end cover.

Frequently Asked Questions – Output Shaft End Cover WG2222000001

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

The output shaft end cover WG2222000001 seals the rear opening of the gearbox output shaft bore. Its primary role is to retain gear oil inside the transmission housing while simultaneously preventing dust, moisture, and road debris from entering the gear train. Without a properly seated end cover, lubricant loss accelerates bearing and gear wear, potentially leading to complete gearbox failure.

How do I know if my WG2222000001 output shaft end cover needs replacement?

Several warning signs indicate a worn or damaged end cover. Look for visible oil seepage around the rear of the gearbox housing, unusual whining noises during gear engagement, or a noticeable drop in transmission oil level between service intervals. Additionally, during routine maintenance, inspect the cover’s sealing surface for cracks, pitting, or warping caused by heat exposure.

Is this end cover compatible with all HW series gearbox variants?

Yes. The WG2222000001 is designed as a universal fit across the SINOTRUK HW gearbox family, including models HW19710, HW19712, HW15710, and HW20716. However, we always recommend confirming your vehicle’s gearbox model and cross-referencing the part number before ordering in bulk. Our team is happy to assist with fitment verification.

What material is the WG2222000001 end cover made from, and how does it handle heat?

This output shaft end cover is cast from high-strength alloy steel with an anti-corrosion surface treatment. It’s engineered to withstand the continuous thermal cycling inside a heavy-duty gearbox — where operating temperatures routinely reach 80–120°C. The material maintains dimensional stability across this range, ensuring the seal remains intact over tens of thousands of kilometers.

Can I order custom-branded packaging for the WG2222000001 end cover?

Absolutely. Mettlead offers full white-label and custom-branded packaging for all gearbox parts including the output shaft end cover. You provide your artwork and branding requirements; we handle the printing and packaging so products arrive shelf-ready for your market.

What is the typical lead time for wholesale orders of this part?

For standard stock items like the WG2222000001, lead time is typically 3–7 business days for order processing, followed by shipping transit time to your destination port. Large-volume or custom-packaged orders may require 10–15 business days. We provide real-time tracking and documentation for every shipment.

Ready to Secure Your Supply of WG2222000001 Output Shaft End Covers?

Whether you’re restocking a fast-moving SKU or sourcing SINOTRUK HW gearbox parts for a new market, Mettlead makes the process simple and profitable. You’ll get factory-direct pricing, strict quality assurance, and a responsive team that speaks the language of truck parts — not corporate jargon.

Here’s how to get started:

1. Send us your inquiry — share your required part numbers, quantities, and destination country.
2. Receive a competitive quote — we respond within 24 hours with pricing, MOQ options, and lead times.
3. Approve samples (optional) — test fitment and quality before committing to volume.
4. Place your order — enjoy flexible payment terms and full shipment tracking.

Browse our complete range of SINOTRUK HOWO truck parts or go straight to our Contact Us page to request a quote today. Let’s build a supply chain you can count on — one quality part at a time.