Product Introduction

This precision-machined spacer ring is a critical component for maintaining the correct alignment and preload of internal transmission parts.

• Structure & Material: Made from high-strength alloy steel, it features a thin, uniform circular profile with a textured surface for stability. The surface is treated with a black oxide coating for corrosion resistance.

• Performance: The precisely controlled thickness ensures accurate axial spacing, preventing excessive endplay or preload in bearings and gears. The rigid steel construction maintains its shape under high loads.

• Durability: The hardened steel and corrosion-resistant coating withstand high vibration, friction, and temperature fluctuations, ensuring long service life.

• Compatibility: Direct OE replacement, fully matching the dimensional specifications of the HW19710 transmission.

Core Function

1. Precision Spacing: Maintains the exact axial distance between rotating components, ensuring proper gear meshing and bearing preload.

2. Alignment: Prevents misalignment of gears and bearings, which can cause premature wear, noise, or transmission failure.

3. Load Distribution: Distributes axial loads evenly across bearing surfaces, extending component life.

Spacer WG2229040103 – SINOTRUK HW Series Gearbox Spacer for Heavy-Duty Trucks

Your SINOTRUK HW Gearbox Deserves a Precision-Engineered Spacer

When it comes to keeping your SINOTRUK HW series gearbox running smoothly, every single component matters — especially the spacer. The Spacer WG2229040103 is a critical transmission component that maintains proper clearance and alignment between gears inside the HW series gearbox. Without a reliable spacer, gear meshing becomes inconsistent, leading to premature wear, excessive noise, and eventually costly downtime.

At Mettlead, we supply this OEM-referenced spacer directly from our factory in China, which means you get genuine-spec quality at a factory-direct price — no middlemen, no inflated markups. Whether you are managing a fleet of HOWO trucks in Africa, maintaining SITRAK vehicles in Southeast Asia, or running a parts distribution business in the Middle East, this spacer is engineered to fit perfectly and perform reliably in your SINOTRUK HW gearbox applications.

Key Features and Benefits of Spacer WG2229040103

So, what makes this particular gearbox spacer stand out from generic alternatives? Let us walk you through the advantages:

• Exact OEM Fitment: The Spacer WG2229040103 is manufactured to match original SINOTRUK specifications, ensuring seamless installation in HW series gearboxes without any modification.
• Premium Material Composition: Crafted from high-grade alloy steel, this spacer delivers exceptional hardness, wear resistance, and fatigue strength — even under extreme torque loads.
• Precision Machining: Advanced CNC machining guarantees tight dimensional tolerances, which translates into optimal gear alignment and reduced vibration inside the transmission.
• Extended Service Life: Thanks to surface heat treatment and fine finishing, this spacer resists pitting and deformation over hundreds of thousands of kilometers.
• Reduced Downtime: A properly functioning spacer keeps your gearbox internals in correct position, minimizing the risk of unexpected transmission failures on the road.
• Cost-Effective Maintenance: By sourcing directly from Mettlead at factory pricing, you significantly lower your per-unit cost compared to buying from local importers or third-party distributors.

In other words, this is not just a simple metal ring — it is a precision-engineered gearbox component that directly influences how smoothly and how long your SINOTRUK HW transmission operates.

Technical Specifications – Spacer WG2229040103

Below you will find the detailed technical parameters for this SINOTRUK HW gearbox spacer. These specifications help procurement managers verify fitment and compatibility before placing an order:

If you need any additional dimensional drawings or cross-reference information for the Spacer WG2229040103, feel free to reach out to our team for technical support.

Application Scenario – Where Does This Spacer Fit?

Understanding exactly where this part goes and what vehicles it serves is essential for confident purchasing decisions. Here is the application breakdown:

Compatible Gearbox Models

• SINOTRUK HW19710 Transmission
• SINOTRUK HW19712 Transmission
• SINOTRUK HW15710 Transmission
• Other HW series gearbox variants using part number WG2229040103

Compatible Vehicle Models

• SINOTRUK HOWO 6×4 / 8×4 Heavy-Duty Trucks
• SINOTRUK SITRAK C7H / T7H Series
• SINOTRUK HOWO A7 Tractor Heads
• Other vehicles equipped with HW series manual transmissions

The Spacer WG2229040103 sits inside the gearbox assembly, maintaining the precise distance between gear sets and bearings. This ensures that all rotating components stay perfectly aligned during operation, which is particularly important in heavy-haul applications where the transmission handles high torque loads continuously.

For more SINOTRUK gearbox components, visit our dedicated Gearbox Parts category or browse our full SINOTRUK HOWO Gearbox Parts collection.

OEM/ODM Capability – Tailored to Your Market Needs

At Mettlead, we understand that different markets have different requirements. That is why we offer flexible customization options for the Spacer WG2229040103 and other gearbox components:

• White-Label Packaging: Want to sell under your own brand? We provide neutral or custom-branded packaging that features your logo, part numbers, and branding — making it easy to build your own parts brand in your local market.
• Custom Packaging Solutions: Whether you need individual poly bags, blister packs, or bulk cartons, we adapt our packaging to suit your distribution model.
• Strict Quality Control: Every spacer undergoes dimensional inspection, hardness testing, and surface finish verification before it leaves our facility. We maintain batch traceability so you can always trace back to the production source.
• Flexible MOQ: Unlike rigid factory minimums, we work with you on order quantities that make commercial sense for your business — whether you are stocking a small workshop or a large warehouse.
• Technical Support: Our engineering team can provide drawings, cross-references, and fitment verification to ensure you are ordering the right part every time.

Explore our complete range of SINOTRUK HOWO Truck Parts to discover how we can serve as your one-stop sourcing partner in China.

Customer Case Study – Spacer WG2229040103 in Action

Earlier this year, a fleet maintenance company based in Nigeria reached out to Mettlead with an urgent requirement. They managed over 120 SINOTRUK HOWO tipper trucks operating in mining logistics, and multiple vehicles were experiencing gearbox noise and shifting difficulty. After diagnosis, their workshop confirmed that the gearbox spacers had worn beyond tolerance, causing axial play in the gear train.

They needed 200 pieces of Spacer WG2229040103 — fast. Here is what happened next:

1. Our team confirmed part specifications and cross-referenced against their gearbox model (HW19710) within 24 hours.
2. We shipped the full order via air freight, and the parts arrived at their Lagos warehouse in just 7 working days.
3. After installation, the client reported that gearbox noise disappeared, shifting became smooth again, and they estimated the repair saved approximately 60% compared to sourcing from European-branded alternatives.

The client has since placed three repeat orders for various SINOTRUK HW series gearbox components, including synchronizer rings, output shaft bearings, and additional spacers. This is the kind of partnership we build — reliable quality, honest pricing, and consistent supply.

Frequently Asked Questions – Spacer WG2229040103

What is the function of Spacer WG2229040103 in the SINOTRUK HW gearbox?

The Spacer WG2229040103 serves as a precision shim that maintains the correct axial distance between gears and bearings inside the HW series gearbox. It prevents lateral movement of rotating components, which in turn ensures smooth gear engagement, reduces transmission noise, and prevents premature wear on adjacent parts.

How do I know if the Spacer WG2229040103 needs replacement?

Common symptoms of a worn or damaged gearbox spacer include abnormal transmission noise (especially a whining or clicking sound), difficulty shifting between gears, increased vibration during acceleration, and in severe cases, metal debris found in the gearbox oil during routine fluid changes. If your mechanic measures axial play beyond factory tolerance, it is time to replace the spacer.

Is this spacer compatible with all HW series gearbox models?

The Spacer WG2229040103 is designed primarily for specific positions within the SINOTRUK HW gearbox family, including HW19710 and HW19712 variants. However, because SINOTRUK uses multiple spacers with different dimensions across the gearbox assembly, we always recommend verifying the part number against your specific gearbox model and assembly diagram before ordering.

What material is the Spacer WG2229040103 made from?

This spacer is manufactured from high-grade alloy steel with surface heat treatment, achieving a surface hardness of HRC 58–62. This combination provides excellent wear resistance, fatigue strength, and dimensional stability — even under the continuous high-torque conditions that heavy-duty truck gearboxes experience daily.

Can I order a small quantity for testing purposes?

Absolutely. Mettlead offers flexible minimum order quantities for the Spacer WG2229040103 and other gearbox parts. If you want to test quality before committing to larger volumes, we are happy to arrange a trial order. Simply contact us with your requirements.

How does the quality of this spacer compare to the original SINOTRUK part?

Our Spacer WG2229040103 is manufactured to match OEM dimensional specifications and material standards. Every batch passes through strict quality control — including CMM dimensional verification, hardness testing, and visual inspection — to ensure it performs identically to the factory-installed component.

Ready to Source Your Spacer WG2229040103? Let Us Talk.

If you are a procurement manager, fleet operator, or parts distributor looking for a reliable supply of SINOTRUK HW series gearbox parts, you have found the right partner. Mettlead offers factory-direct pricing, verified quality, fast international delivery, and the kind of responsive communication that makes cross-border sourcing stress-free.

Here is what to do next:

1. Send us your inquiry — include the part number (WG2229040103), required quantity, and your destination country.
2. Receive a detailed quotation — we typically respond within 12 hours with pricing, lead time, and shipping options.
3. Confirm and receive — once payment is arranged through our secure and flexible methods, your parts are on their way.

We also welcome customers to visit our facility in China for quality inspection and face-to-face discussions.

Contact Mettlead Now to get your competitive quote for Spacer WG2229040103 and other SINOTRUK gearbox components. Let us keep your trucks moving.