Product Introduction

Structure

This balance shaft housing is a precision-cast ductile iron component, featuring a robust, symmetrical design optimized for heavy-duty truck chassis integration. The main body is a rib-reinforced casting, with a large central cylindrical bore for balance shaft and bearing installation, and two side mounting flanges with precision-machined surfaces for chassis attachment.

Performance

Constructed from high-grade ductile iron, the housing offers exceptional structural rigidity, impact resistance, and fatigue strength, capable of withstanding the extreme loads and stresses encountered in heavy-duty operation. The precision-machined central bore ensures accurate alignment of the balance shaft and bearings, minimizing friction and wear, while the rib-reinforced design optimizes load distribution, preventing localized stress concentrations and component failure. The anti-corrosion coating provides superior resistance to rust, salt spray, and chemical corrosion, ensuring long-term durability in diverse operating conditions, with a temperature range of -40°C to 120°C.

Core Function

1. Serves as the primary housing and support structure for the balance shaft and its associated bearings, providing a secure and stable mounting point within the chassis, ensuring proper alignment and load distribution.

2. Transmits and distributes complex loads such as vertical pressure, lateral torque, and longitudinal impact from the balance shaft to the chassis, maintaining the integrity of the suspension system.

3. Protects the balance shaft and bearings from contamination and wear, providing a sealed, lubricated environment that extends the service life of these critical components.

Balance Shaft Housing WG9925520235 Sinotruk – OEM-Quality Replacement for Heavy-Duty Trucks

When your heavy-duty truck’s suspension system demands reliable protection and precise alignment, the Balance Shaft Housing WG9925520235 stands ready to deliver. Engineered specifically for Sinotruk HOWO series vehicles, this critical chassis component cradles and shields the balance shaft assembly, ensuring smooth load distribution across tandem axles. At Mettlead, we supply this genuine-spec part directly from our factory in China, which means you get uncompromising quality at a competitive price — without the middleman markup.

Whether you’re managing a fleet maintenance program or sourcing replacement parts for your workshop, this balance shaft housing offers the durability and dimensional accuracy your trucks need to stay on the road. Let’s explore what makes this component essential and why procurement managers across the globe trust Mettlead as their go-to supplier.

Key Features and Benefits of the WG9925520235 Balance Shaft Housing

The balance shaft housing is far more than a simple metal enclosure. It serves as the structural backbone of the rear suspension’s balancing mechanism, and here’s why this particular part excels:

• Precision-Cast Construction – Manufactured using high-grade cast iron alloy, this housing withstands extreme loads, road vibrations, and harsh operating environments without cracking or deforming.
• OEM-Matching Dimensions – Every bore, mounting hole, and surface finish matches the original Sinotruk specifications, so installation is seamless with no modifications required.
• Superior Corrosion Resistance – A protective surface treatment guards against rust and oxidation, extending service life even in humid or salt-heavy climates.
• Optimized Load Distribution – By securely housing the balance shaft, this component ensures even weight transfer between tandem rear axles, reducing tire wear and improving ride stability.
• Reduced Downtime – Direct-fit design means faster installation, getting your trucks back to work sooner and keeping your fleet profitable.

In other words, choosing the right balance shaft housing isn’t just about replacing a worn part — it’s about protecting your entire rear suspension system and maximizing vehicle uptime.

Technical Specifications

Accuracy matters when you’re sourcing chassis components. Below you’ll find the detailed specifications for the Balance Shaft Housing WG9925520235 Sinotruk:

Need to verify fitment for your specific truck model? Don’t hesitate to contact us with your VIN or chassis number, and our technical team will confirm compatibility within hours.

Application Scenarios: Where This Balance Shaft Housing Works

Understanding where and how this part functions helps you appreciate its importance in your truck’s overall performance:

Compatible Vehicle Models

The WG9925520235 balance shaft housing is designed for Sinotruk heavy-duty trucks equipped with tandem rear axle configurations. Specifically, it fits:

• Sinotruk HOWO A7 6×4 Tractor Trucks
• Sinotruk HOWO T7H Heavy-Duty Cargo Trucks
• Sinotruk HOWO TX Series Dump Trucks
• Other HOWO models utilizing the WG9925520235 balance shaft system

Functional Role in the Chassis System

Mounted between the two rear drive axles, the balance shaft housing accommodates and protects the balance shaft assembly. Think of it as a protective cradle — it holds the shaft firmly in position while absorbing road shocks and preventing debris intrusion. As a result, the tandem axles can pivot smoothly over uneven terrain, distributing payload weight evenly and preventing premature wear on suspension bushings and leaf springs.

Explore more chassis components in our catalog to find complementary parts for your suspension rebuild.

OEM/ODM Capabilities

At Mettlead, we understand that different markets have different requirements. That’s precisely why we offer flexible manufacturing and branding solutions:

• White-Label Packaging – Receive parts in neutral boxes, ready for your own branding and distribution channels.
• Custom Packaging – We can print your company logo, part numbers, and barcodes directly on the packaging to streamline your warehouse operations.
• Strict Quality Control – Every balance shaft housing undergoes dimensional inspection, surface quality checks, and material hardness testing before shipment.
• Factory-Direct Pricing – Because we source directly from certified manufacturing facilities in China, you benefit from competitive pricing without sacrificing quality.
• Bulk Order Support – Whether you need 10 pieces or 1,000, our production capacity scales to meet your demand with consistent lead times.

Moreover, we welcome international buyers to visit our facilities for on-site inspection. Seeing our quality processes firsthand gives you the confidence to build a long-term supply partnership.

Browse our full range of Sinotruk HOWO truck parts to discover thousands of genuine-spec components available for immediate dispatch.

Frequently Asked Questions

What does the balance shaft housing actually do on a Sinotruk HOWO truck?

The balance shaft housing serves as the structural enclosure for the balance shaft, which sits between the tandem rear axles. It holds the shaft securely in place, absorbs road-induced vibrations, and prevents dirt, water, and debris from damaging the internal components. Without a properly functioning housing, the balance shaft can shift out of alignment, leading to uneven axle loading and accelerated suspension wear.

How do I know if my balance shaft housing needs replacement?

Common signs include visible cracks or fractures on the housing body, excessive play in the balance shaft, unusual clunking noises from the rear suspension during loaded driving, and uneven tire wear on the rear axles. If you notice oil leakage around the housing area or see corrosion damage that compromises structural integrity, it’s time to replace the part.

Is the WG9925520235 an exact replacement for the original Sinotruk part?

Yes. This balance shaft housing is manufactured to OEM-equivalent specifications, meaning all mounting points, bore diameters, and surface finishes match the factory original. It installs directly without any modifications, ensuring a hassle-free replacement process.

Can this housing withstand heavy-load and off-road conditions?

Absolutely. The high-strength cast iron alloy construction is specifically engineered for heavy-duty applications. Whether your trucks operate on highways carrying maximum payload or navigate rough construction sites, this housing maintains its structural integrity under extreme stress.

What’s the typical lifespan of a balance shaft housing?

Under normal operating conditions, a quality balance shaft housing can last several hundred thousand kilometers. However, factors like overloading, poor road conditions, and lack of regular inspection can shorten its service life. We recommend periodic visual inspections during routine maintenance intervals.

Do you supply other balance shaft components besides the housing?

Yes, Mettlead offers a comprehensive range of balance shaft system parts including balance shaft pins, bushings, brackets, and related hardware. Visit our Sinotruk truck parts page to explore the complete selection.

Ready to Secure Your Supply? Get a Quote Today

Every day your truck sits idle waiting for parts is a day of lost revenue. Don’t let a worn balance shaft housing compromise your fleet’s performance or your bottom line.

Here’s what happens when you reach out to Mettlead:

1. Submit your inquiry with the part number WG9925520235 and required quantity.
2. Receive a competitive factory-direct quotation within 24 hours.
3. Confirm your order with flexible, secure payment options.
4. Get fast, reliable delivery to your door — anywhere in the world.

Contact us now to request pricing, confirm vehicle fitment, or discuss bulk order arrangements. Our experienced team is standing by to support your procurement needs with speed and professionalism.