Product Introduction

Structure

This balance shaft bolt is a high-strength one-piece forged fastener designed for heavy-duty truck balance shaft systems. It features a long, slender shank with a precision-threaded section on one end and a cylindrical locating base on the other. A hexagonal head nut is pre-installed on the threaded end for secure clamping. The entire component is finished with a black oxide or phosphate coating, providing excellent corrosion resistance and wear protection.

Performance

Forged from premium alloy steel (such as 42CrMo) and subjected to quenching and tempering heat treatment, this bolt achieves a tensile strength grade of 10.9 or higher, with exceptional fatigue resistance and impact toughness to withstand extreme alternating loads. The black anti-corrosion finish provides superior resistance to rust, salt spray, and chemical exposure, ensuring long-term durability in harsh operating environments. It maintains stable clamping force in temperatures ranging from -40°C to 150°C, and the precision threads prevent loosening under prolonged vehicle vibration, ensuring reliable performance in heavy-duty conditions.

Core Function

1. Serves as the core fastening component for the balance shaft assembly, rigidly connecting the balance shaft, leaf spring, and axle bracket to ensure the integrity of the suspension system.

2. Transmits and bears complex loads such as vertical pressure, lateral torque, and longitudinal impact during vehicle operation, maintaining the precise positional relationship of the balance shaft.

3. Prevents relative displacement between the balance shaft and related components under dynamic conditions such as vehicle acceleration, braking, and turning, avoiding abnormal wear of suspension parts.

Balance Shaft Bolt 99014520800 Sinotruk – Premium OEM Fastener for Heavy-Duty Truck Chassis

When your heavy-duty truck’s suspension system depends on every single fastener holding firm under extreme loads, you simply cannot afford to compromise on quality. The Balance Shaft Bolt 99014520800 is a genuine Sinotruk OEM-specification fastener engineered to secure the balance shaft assembly on HOWO and SITRAK series trucks. Sourced directly from our factory in China, this bolt delivers the precise tensile strength, thread accuracy, and corrosion resistance that keeps your fleet running safely — mile after mile.

At Mettlead, we specialize in supplying authentic Chinese brand truck parts at factory-direct prices. Whether you are a fleet maintenance manager or a regional parts distributor, this balance shaft bolt meets the rigorous standards your operation demands. Moreover, our streamlined supply chain ensures you receive exactly what you need, when you need it.

Key Features and Benefits of Balance Shaft Bolt 99014520800

Engineered for Extreme Load Conditions

The balance shaft sits at the heart of the tandem axle suspension, absorbing tremendous dynamic forces every time the truck encounters uneven terrain. Consequently, the Balance Shaft Bolt 99014520800 Sinotruk is manufactured from high-grade alloy steel that withstands repeated stress cycles without fatigue or deformation. This means fewer unscheduled maintenance stops and lower total cost of ownership for your fleet.

Precise OEM Dimensional Accuracy

Every thread pitch, shank diameter, and head dimension on this bolt matches the original Sinotruk factory blueprint. As a result, installation is straightforward — no modifications, no shimming, and no guesswork. Your technicians can complete the job quickly and confidently, reducing vehicle downtime significantly.

Superior Corrosion Resistance

Road salt, moisture, and chemical exposure constantly attack chassis fasteners. To combat this, the bolt features a protective surface treatment that resists rust and oxidation over extended service intervals. In other words, it stays strong even in the harshest operating environments.

Cost-Effective Factory-Direct Pricing

Because Mettlead sources directly from certified manufacturing facilities, you benefit from competitive wholesale pricing without sacrificing quality. Additionally, our strict quality control process inspects every batch before shipment, so you receive parts that perform exactly as specified.

Technical Specifications

Application Scenario: Where Does This Balance Shaft Bolt Work?

The Balance Shaft Bolt 99014520800 is specifically designed to fasten the balance shaft components within the rear suspension system of Sinotruk heavy-duty trucks. Here is how it fits into real-world operations:

• Compatible Truck Models: Sinotruk HOWO A7, HOWO T7H, SITRAK C7H, and other models equipped with tandem rear axle balance shaft suspension systems.
• Function: Secures the balance shaft bracket and pivot assembly to the chassis frame, ensuring the tandem axle oscillates smoothly under load.
• Typical Use Cases: Routine maintenance replacement, post-accident chassis repair, fleet overhaul programs, and new assembly line builds.
• Operating Conditions: Long-haul highway transport, mining haul roads, construction site logistics, and off-road heavy cargo delivery.

Because the balance shaft distributes load evenly between the rear axles, a failed or weakened bolt can lead to suspension misalignment, uneven tire wear, and potentially dangerous handling. Therefore, timely replacement with a genuine-spec fastener like the 99014520800 is essential for safe operation.

Explore more chassis and suspension parts or browse our full Sinotruk HOWO truck parts catalog to find everything your fleet needs in one place.

OEM/ODM Capability

Mettlead goes beyond simply supplying parts — we partner with distributors and fleet operators who need flexible sourcing solutions tailored to their market. Here is what we offer:

• White-Label Packaging: We can package the Balance Shaft Bolt 99014520800 under your own brand identity, complete with custom labels, barcodes, and documentation.
• Custom Packaging Solutions: Whether you need bulk industrial packaging for workshop use or individual retail-ready blister packs, we accommodate your requirements.
• Strict Quality Control: Every production batch undergoes dimensional inspection, hardness testing, and surface treatment verification before leaving our facility.
• Flexible Order Quantities: From trial orders to full container loads, we scale to match your purchasing cycle.
• Factory Visits Welcome: We invite procurement teams to visit our facilities in China to inspect production processes firsthand and build long-term confidence in our supply chain.

For a comprehensive overview of all available Sinotruk components, visit our Sinotruk truck parts resource page.

Frequently Asked Questions About Balance Shaft Bolt 99014520800

What exactly does the balance shaft bolt do on a Sinotruk truck?

The balance shaft bolt secures the pivot point of the balance shaft — the component that allows both rear axles to articulate independently over uneven surfaces. Without properly torqued, high-strength bolts in this position, the suspension cannot distribute loads evenly, which leads to accelerated wear on axle components and tires.

How do I know if my balance shaft bolts need replacement?

Common signs include visible rust or corrosion on the bolt head, elongation or thread damage discovered during routine inspections, unusual clunking noises from the rear suspension, and uneven tire wear patterns. Additionally, any time the balance shaft assembly is disassembled for service, replacing the bolts with new units is considered best practice.

Is this bolt compatible with non-Sinotruk trucks?

The 99014520800 is manufactured to Sinotruk OEM specifications. While some Chinese-brand trucks share similar suspension architectures, we strongly recommend verifying the part number against your specific vehicle’s parts catalog before ordering. If you are unsure, our technical team can help you cross-reference compatibility.

What torque value should I use when installing this bolt?

Always follow the torque specification listed in your Sinotruk service manual for the specific truck model. Over-torquing can stretch the bolt beyond its yield point, while under-torquing risks loosening under dynamic loads. Using a calibrated torque wrench is essential for proper installation.

Can I order a small quantity for testing before committing to bulk?

Absolutely. We understand that procurement managers need to validate quality before scaling up orders. Mettlead supports trial orders so you can inspect the product firsthand, test fitment on your vehicles, and confirm it meets your standards before placing larger volume commitments.

How is the bolt packaged for international shipping?

Standard orders ship in protective OEM-style packaging that prevents damage during transit. For distributors who require custom or white-label packaging, we offer tailored solutions — just let us know your specifications when you request a quote.

Ready to Secure Your Supply of Balance Shaft Bolt 99014520800?

Your trucks deserve fasteners that perform without compromise. Whether you need a trial batch or a long-term supply agreement, Mettlead delivers genuine-quality Sinotruk balance shaft bolts at factory-direct prices with reliable global shipping.

Take the next step today:

• Get a competitive quote tailored to your order volume
• Ask our team about custom packaging and white-label options
• Request technical documentation or cross-reference assistance

Contact us now to discuss your requirements with our dedicated parts specialists. Fast response guaranteed — because we know downtime costs money.