Product Introduction

• Structure: A precision-cut hexagonal gasket made from high-temperature oil-resistant composite paper, with 6 bolt holes aligned to match the end cover mounting flange. The material is reinforced with a fiber core for improved tear resistance and shape retention.

• Key Specifications:

• Material: Oil-resistant fiber-reinforced composite paper

• Thickness: 1.5 mm

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

• Compression rate: 15–20% (for effective sealing)

Core Function

1. Oil-Tight Sealing: Creates a reliable seal between the input shaft end cover and transmission main box, preventing lubricating oil leakage.

2. Contamination Protection: Blocks dust, moisture, and road debris from entering the transmission through the end cover interface.

3. Vibration Damping: The flexible material absorbs minor vibrations between the end cover and housing, reducing noise and preventing gasket fatigue.

Input Shaft End Cover Paper Gasket WG2229020008 – SINOTRUK HW Series Gearbox

Precision-Engineered Sealing for Your SINOTRUK HW Gearbox

When it comes to heavy-duty truck transmissions, even the smallest component plays a critical role in overall performance. The Input Shaft End Cover Paper Gasket WG2229020008 is specifically designed to provide a reliable, leak-free seal at the input shaft end cover of the SINOTRUK HW Series Gearbox. Without a properly functioning gasket in this position, transmission oil can seep out gradually, leading to premature wear, increased maintenance costs, and unexpected downtime for your fleet.

At Mettlead, we supply this genuine-spec gearbox gasket directly from our manufacturing base in China, ensuring that wholesale distributors and spare parts agents around the world receive consistent quality at competitive factory-direct prices. Whether you are stocking inventory for the African market or serving fleet operators in Southeast Asia, this gasket delivers the dependable sealing performance your customers demand.

Key Features and Benefits of the WG2229020008 Paper Gasket

Choosing the right gasket is not just about fit — it is about long-term reliability and cost efficiency. Here is why this particular input shaft end cover paper gasket stands out for distributors and their end users alike:

• OEM-Grade Compatibility: Manufactured to match the original SINOTRUK specifications, this gasket fits precisely onto the HW series gearbox input shaft end cover without any modification needed.
• High-Quality Paper Composite Material: The gasket is made from durable, oil-resistant paper composite material that withstands the thermal cycling and pressure variations common inside heavy-duty transmissions.
• Excellent Sealing Performance: Its uniform thickness and smooth surface finish ensure an even compression seal, effectively preventing transmission fluid leaks at the end cover junction.
• Resistance to Oil and Heat: Engineered to maintain its integrity even under prolonged exposure to gear oil and elevated operating temperatures inside the gearbox housing.
• Easy Installation: The gasket’s precise dimensions mean it drops right into place during assembly or maintenance, reducing labor time and minimizing installation errors.
• Cost-Effective Maintenance Solution: Replacing a worn gasket is far less expensive than dealing with the consequences of oil leakage, such as bearing damage or gear surface degradation.

For wholesale distributors, stocking the WG2229020008 input shaft end cover paper gasket means you are offering your workshop customers a reliable solution that keeps their SINOTRUK trucks running smoothly — and that translates into repeat orders for your business.

Technical Specifications

Accurate specifications matter when you are sourcing transmission components for diverse fleets. The following table provides the essential parameters for this gearbox gasket:

Application Scenarios: Where Does This Gasket Fit?

Understanding exactly where and how this gasket performs helps you recommend the right part to your customers with confidence. The Input Shaft End Cover Paper Gasket WG2229020008 is installed at the front end of the SINOTRUK HW series gearbox, seated between the input shaft end cover plate and the gearbox housing. Its primary job is to create a tight, oil-proof barrier that prevents transmission fluid from escaping through this junction point.

Compatible Truck Models and Gearbox Applications

• SINOTRUK HOWO A7 / T7H / T5G equipped with HW19710 or HW15710 gearbox
• SITRAK C7H / C5H models using HW series manual transmission
• SINOTRUK Steyr-series heavy trucks with HW gearbox configurations
• Various SINOTRUK dump trucks, tractor heads, and cargo trucks utilizing the HW transmission platform

Whenever a fleet mechanic notices minor oil traces around the input shaft end cover area during routine gearbox inspection, this paper gasket is typically the component that needs replacement. Stocking the WG2229020008 gasket ensures your customers can address this common maintenance need quickly and affordably.

Explore our full range of gearbox components and SINOTRUK HOWO gearbox parts to complement your inventory with related transmission spares.

OEM/ODM Capabilities and Wholesale Advantages

As a dedicated supplier of Chinese heavy truck parts, Mettlead understands that distributors need more than just a good product — you need a partner who supports your brand and your business model. Here is what we bring to the table:

• White-Label and Custom Packaging: Want to sell under your own brand? We offer neutral packaging or fully customized packaging with your logo, part numbers, and branding elements. This gives you full control over how your customers perceive your product line.
• Strict Quality Control: Every batch of WG2229020008 gaskets goes through dimensional inspection and material verification before shipment. We understand that a single defective gasket can damage your reputation, so we take quality seriously at every stage.
• Flexible MOQ for Distributors: Whether you need a trial order to test the market or a container load to replenish warehouse stock, our order quantities are structured to accommodate wholesale and agency-level buyers.
• Comprehensive Product Range: Beyond this gasket, we supply a full catalog of SINOTRUK HOWO truck parts and spare parts, including gears, synchronizers, shafts, bearings, and complete overhaul kits for the HW series gearbox.
• Factory-Direct Pricing: By eliminating intermediaries, we pass the savings directly to you, giving your business a healthier profit margin on every gasket sold.

Customer Case: Distributor Success with WG2229020008 Gearbox Gaskets

One of our long-term partners, a spare parts distributor based in Nigeria, initially reached out to Mettlead looking for a reliable source of SINOTRUK HW series gearbox parts. Their local workshop customers frequently needed input shaft end cover gaskets because the high ambient temperatures in West Africa accelerated gasket degradation in HW gearboxes.

After receiving their first sample order of the Input Shaft End Cover Paper Gasket WG2229020008, they tested the fitment and material quality against original parts. The feedback was straightforward: identical dimensional accuracy, proper oil resistance, and seamless installation. Within three months, they scaled their orders to 2,000 pieces per shipment and expanded their catalog to include additional SINOTRUK gearbox gaskets and seals from our range.

Today, this distributor lists the WG2229020008 gasket as one of their fastest-moving SKUs, precisely because their workshop customers trust the consistent quality and keep reordering. That is exactly the kind of supply chain reliability we aim to deliver for every wholesale partner we work with.

Frequently Asked Questions About the WG2229020008 Input Shaft End Cover Paper Gasket

What is the exact function of the input shaft end cover paper gasket in the HW gearbox?

The WG2229020008 paper gasket sits between the input shaft end cover and the gearbox housing. Its primary function is to create a tight seal that prevents gear oil from leaking out at this junction. Over time, heat cycles and oil exposure can degrade the gasket material, which is why it is considered a routine maintenance replacement item for SINOTRUK HW series transmissions.

How do I know when this gasket needs replacement?

The most common indicator is visible oil seepage or wet spots around the front area of the gearbox, specifically near the input shaft end cover. If a technician notices oil residue in this area during a scheduled service, replacing the paper gasket is typically the first and most cost-effective step to restore a proper seal.

Is this gasket compatible with all HW series gearbox models?

Yes, the WG2229020008 gasket is designed for the SINOTRUK HW series gearbox family, which includes variants such as HW15710, HW19710, and related configurations found in HOWO, SITRAK, and Steyr-series trucks. However, we always recommend verifying the OEM part number against the specific gearbox model on the vehicle before ordering in bulk.

What material is this paper gasket made from, and is it oil-resistant?

This gasket is manufactured from a specialized oil-resistant paper composite material. It is specifically formulated to withstand prolonged contact with transmission gear oil without swelling, disintegrating, or losing its sealing properties. The material also handles the thermal variations that occur during normal gearbox operation.

Can I use a silicone sealant instead of this paper gasket?

While some mechanics may apply liquid sealant as a temporary fix, the OEM design specifies a paper gasket for this location. The paper gasket provides a controlled compression thickness that maintains the correct clearance between the end cover and housing. Using sealant alone can result in over-torquing or uneven sealing, so we strongly recommend using the proper WG2229020008 gasket for a reliable repair.

What is the minimum order quantity for wholesale buyers?

Our MOQ is flexible and designed to accommodate distributors at various stages of business growth. Whether you are placing a trial order or restocking in bulk, we will work with you to find an arrangement that fits your needs. Contact us directly to discuss pricing tiers based on your volume requirements.

Ready to Stock the WG2229020008 Input Shaft End Cover Paper Gasket?

If you are a wholesale distributor or spare parts agent looking for a dependable supply of SINOTRUK HW series gearbox parts, Mettlead is here to support your growth. We offer factory-direct pricing, strict quality control, flexible packaging options, and fast global shipping — everything you need to keep your inventory moving and your customers satisfied.

Take the next step today. Contact us now to request a quote on the WG2229020008 paper gasket or to discuss your full gearbox parts sourcing needs. Our team is ready to provide part verification, pricing details, and shipping solutions tailored to your market.

Browse our complete SINOTRUK HOWO truck parts catalog to discover more components for your product line.