Product Introduction

This screw plug is a critical sealing component that prevents oil leakage and contamination in the transmission housing, ensuring the integrity of the lubrication system.

• Structure & Material: Constructed from high-strength alloy steel, with a threaded body and a hexagonal head for easy installation and removal. The surface is treated with a black oxide coating for corrosion resistance.

• Sealing Performance: The precision-machined threads create a tight seal when installed, preventing gear oil leakage and protecting against the entry of dirt and moisture.

• Durability: The hardened steel construction and corrosion-resistant coating ensure long service life even under high vibration and temperature fluctuations.

• Compatibility: Direct OE replacement, fully matching the thread specifications and sealing requirements of the HW19710 transmission housing.

Core Function

1. Sealing & Contamination Prevention: Closes openings in the transmission housing to maintain oil pressure, prevent leaks, and block the entry of contaminants.

2. Easy Installation/Removal: The hexagonal head allows for quick and secure installation using standard tools, facilitating maintenance and oil changes.

3. Corrosion Resistance: The black oxide coating protects against rust and corrosion, ensuring reliable performance in harsh operating environments.

Screw Plug WG2229010002 – SINOTRUK HW Series Gearbox | Factory Direct Supply

When your SINOTRUK HW series gearbox demands a reliable sealing solution, the Screw Plug WG2229010002 stands as the component you can count on. Engineered to exact OEM specifications, this gearbox screw plug prevents lubricant leakage, maintains optimal internal pressure, and ensures your heavy-duty transmission system operates without interruption. At Mettlead, we supply this genuine-quality part directly from our warehouse in China — giving procurement managers like you the advantage of factory-direct pricing, fast delivery, and strict quality assurance on every order.

Why the Screw Plug WG2229010002 Matters for Your SINOTRUK HW Gearbox

Every component inside a heavy-truck transmission plays a critical role, and the screw plug is no exception. Although small in size, the WG2229010002 screw plug serves as a vital seal point within the SINOTRUK HW series gearbox housing. Without a properly fitted screw plug, gear oil seeps out, contaminants enter, and costly gearbox failures follow. Here is what this part delivers:

• Leak-Proof Sealing: Precision-machined threads create a tight, secure fit that prevents transmission fluid from escaping — even under extreme vibration and thermal cycling.
• Corrosion Resistance: Manufactured from high-grade steel with surface treatment to withstand harsh operating environments, road salt, and moisture exposure.
• OEM-Grade Fitment: Dimensions and thread pitch match the original SINOTRUK factory specifications exactly, so installation is seamless with no modifications required.
• Extended Gearbox Life: By maintaining proper oil levels and keeping debris out, this screw plug helps protect bearings, synchronizers, and gears from premature wear.
• Reduced Downtime: A quick replacement part that arrives fast — meaning your fleet spends more time on the road and less time in the workshop.

Technical Specifications – Screw Plug WG2229010002

Accurate specifications matter when you are sourcing gearbox components for a fleet. The table below outlines the key parameters of the WG2229010002 screw plug so you can verify compatibility before placing your order:

Application Scenarios – Where Does the WG2229010002 Screw Plug Fit?

Understanding exactly where this part belongs helps you order with confidence. The Screw Plug WG2229010002 is specifically designed for the SINOTRUK HW series manual transmission, which is widely used across China’s heavy-duty truck lineup. Here are the primary application scenarios:

• SINOTRUK HOWO A7 / T7H heavy-duty trucks equipped with HW19710 or HW15710 gearboxes.
• SITRAK C7H series using the HW series transmission for long-haul transport operations.
• Mining and construction dump trucks operating SINOTRUK drivetrains under extreme load conditions.
• Fleet maintenance programs — ideal as a preventive replacement part during scheduled gearbox servicing.
• Aftermarket repair workshops that service imported Chinese heavy trucks in Africa, Southeast Asia, the Middle East, and South America.

In short, if your vehicle runs a SINOTRUK HW series gearbox and you need to replace a worn, damaged, or missing screw plug, the WG2229010002 is your exact-match solution. Browse our full range of SINOTRUK HOWO gearbox parts to find additional components for your transmission system.

OEM/ODM Capability – Custom Packaging and White-Label Solutions

As a procurement manager, you may need more than just the part itself — you need branding flexibility. Mettlead offers comprehensive OEM and ODM services tailored to B2B buyers:

• White-Label Packaging: Receive the Screw Plug WG2229010002 in neutral packaging, ready for your own branding and distribution.
• Custom Packaging: Add your company logo, part numbers, barcodes, and multilingual labels to each box — reinforcing your brand identity in your local market.
• Strict Quality Control: Every batch undergoes dimensional inspection, thread tolerance verification, and surface quality checks before shipment.
• Flexible Order Quantities: Whether you need 50 pieces or 5,000, we accommodate your purchasing schedule without inflating lead times.
• Factory Visits Welcome: We invite buyers to visit our facilities in China for on-site quality audits, giving you complete transparency into our production and QC processes.

Explore our full catalog of SINOTRUK HOWO truck parts and spare parts to discover thousands of genuine-equivalent components available for immediate order.

Customer Case Study – WG2229010002 Screw Plug Bulk Order for East African Fleet

Earlier this year, a fleet management company operating over 120 SINOTRUK HOWO dump trucks in Tanzania reached out to Mettlead with an urgent need. During routine gearbox maintenance, their technicians discovered that screw plugs across multiple trucks had corroded and were leaking transmission oil. They needed Screw Plug WG2229010002 replacements — fast, affordable, and in bulk.

After verifying the part number and gearbox model (HW19710), our team prepared 500 units of the WG2229010002 screw plug with neutral packaging as requested. The order shipped within 5 working days, and the client received the parts in Dar es Salaam just 18 days later via sea-air combined logistics. Their feedback was clear: “Perfect fit, zero leaks after installation, and the price saved us nearly 40% compared to our previous supplier.”

This is precisely the experience we deliver to procurement professionals worldwide — the right SINOTRUK HW series gearbox parts, at factory-direct prices, with the reliability your operations demand.

Frequently Asked Questions – Screw Plug WG2229010002

What is the exact function of the Screw Plug WG2229010002 in the SINOTRUK HW gearbox?

The WG2229010002 screw plug seals oil passages and inspection ports on the SINOTRUK HW series gearbox housing. It prevents gear oil from leaking out and stops dust, water, and debris from entering the transmission. Essentially, it acts as a protective seal that maintains the internal environment your gearbox needs to function properly.

Which gearbox models is the WG2229010002 screw plug compatible with?

This screw plug is designed for the SINOTRUK HW series gearbox family, including the HW15710, HW19710, and related variants. These transmissions are commonly found in SINOTRUK HOWO, SITRAK, and Steyr heavy-duty trucks. Always confirm the part number against your gearbox nameplate to ensure a correct match.

How do I know when the WG2229010002 screw plug needs replacement?

Look for these warning signs: visible oil stains or wet spots around the gearbox housing, dropping transmission fluid levels between services, or thread damage visible during routine inspection. If the screw plug shows corrosion, stripped threads, or a damaged sealing face, replacement is necessary to avoid further oil loss and potential gearbox damage.

Is this screw plug an OEM original or aftermarket equivalent?

Mettlead supplies OEM-equivalent parts manufactured to the same dimensional and material specifications as the original SINOTRUK factory component. Each WG2229010002 screw plug passes strict quality inspection to ensure thread accuracy, material hardness, and surface treatment meet OEM standards — so you get original-quality performance at a more competitive price.

Can I order the Screw Plug WG2229010002 in small quantities for testing?

Absolutely. We understand that procurement managers often need to evaluate parts before committing to large orders. Mettlead offers flexible minimum order quantities on the WG2229010002 screw plug. Reach out to our team to discuss sample orders or trial quantities tailored to your testing requirements.

What torque specification should be used when installing this screw plug?

Always follow the SINOTRUK HW gearbox service manual for the recommended torque value. Over-tightening can damage the threads in the aluminum or cast-iron housing, while under-tightening leads to leaks. A calibrated torque wrench and clean threads (free of old sealant or debris) will ensure a proper, leak-free installation every time.

Ready to Source Screw Plug WG2229010002? Let’s Talk.

You have read the specifications, verified the application fit, and seen how other buyers benefit from working with Mettlead. Now it is your turn. Whether you need 10 pieces or 10,000, our team is ready to provide a competitive quote with transparent lead times and secure payment options.

Take the next step:

• Request a quote for the Screw Plug WG2229010002 today.
• Ask about bundle pricing when ordering additional gearbox parts and accessories.
• Schedule a factory visit to see our quality control process firsthand.

Contact us now — send your inquiry and a dedicated parts specialist will respond within 24 hours with pricing, availability, and shipping options to your region.