Product Introduction

This Long Pin WG4007443013 is an OEM precision pin for heavy-duty truck brake calipers and suspension systems. It is designed to provide stable positioning, connection, and guidance for brake components under heavy load and harsh working conditions.

Performance

• High-strength alloy steel: Ensures excellent tensile strength, shear resistance, and long service life.

• Precision machining: Strict dimensional accuracy guarantees perfect fit and stable assembly.

• Surface treatment: Anticorrosion, antirust, and wearresistant for longterm use.

• Stable positioning: Effectively reduces component movement, vibration, and abnormal noise.

• Direct OEM replacement: Fully matches original installation size and structure.

Core Function

1. Provides positioning, connection, and guidance for brake calipers and related components.

2. Prevents lateral movement and ensures stable operation of the brake system.

3. Reduces wear between mating parts and extends service life of brake components.

4. Maintains correct alignment of brake parts for safe and consistent braking performance.

Long Pin WG4007443013 Sinotruk Sitrak – OEM Brake Caliper & Suspension Pin

When your heavy-duty trucks operate under extreme loads day after day, every single component must deliver unwavering reliability. The Long Pin WG4007443013 is a precision-engineered OEM pin specifically designed for Sinotruk Sitrak brake calipers and suspension systems. Built to withstand harsh working conditions, this long pin ensures stable positioning, secure connection, and precise guidance for critical brake components — so your fleet stays safe and productive on the road.

At Mettlead, we supply this genuine-spec pin directly from our factory in China, which means you get OEM-level quality at a competitive factory-direct price. Whether you’re managing a fleet maintenance program or sourcing replacement parts for your workshop, this long pin delivers the durability and dimensional accuracy that heavy-duty applications demand.

Key Features & Benefits of Long Pin WG4007443013

This isn’t just another pin — it’s a critical load-bearing component that your brake system relies on. Here’s why procurement managers across the globe trust this part:

• OEM-Grade Precision: Manufactured to exact Sinotruk Sitrak specifications, ensuring a perfect fit without modification or shimming.
• Superior Material Strength: Crafted from high-grade alloy steel with surface hardening treatment, this long pin resists wear, fatigue, and deformation under continuous heavy loads.
• Corrosion Resistance: Anti-corrosion surface finish extends service life even in humid, dusty, or salt-spray environments.
• Stable Brake Performance: Provides reliable positioning and guidance for brake caliper components, maintaining consistent braking force distribution.
• Extended Service Intervals: Engineered for longevity, reducing your replacement frequency and lowering total cost of ownership.
• Drop-In Replacement: Designed as a direct replacement for worn or damaged pins, minimizing vehicle downtime during maintenance.

Technical Specifications – Long Pin WG4007443013 Sinotruk Sitrak

Accurate specifications matter when you’re sourcing brake and suspension components. Below you’ll find the detailed parameters for this long pin:

Application Scenarios – Where Does This Long Pin Fit?

Understanding exactly where and how this component works helps you make a confident purchasing decision. The Long Pin WG4007443013 serves as a chassis connection fitting that plays a vital role in the following scenarios:

• Compatible Truck Models: Sinotruk SITRAK heavy-duty trucks (C7H, G7, T7H series and related platforms).
• Primary Function: Acts as a long pin shaft within the brake caliper assembly, providing axial positioning and rotational guidance for brake pads and caliper brackets.
• Chassis Connection: Also used as a suspension linkage pin in specific chassis configurations, securing pivot points under dynamic load.
• Assembly Use: Required during new vehicle assembly or axle rebuilds where precise pin fitment is critical.
• Wear Replacement: Ideal for scheduled maintenance replacement when existing pins show signs of wear, scoring, or dimensional loss due to prolonged service.

In short, whenever your Sitrak truck’s braking or suspension system needs a reliable long pin — whether for a fresh build or a worn-part swap — WG4007443013 is the correct OEM specification to source.

OEM/ODM Capability & Supply Advantages

As a dedicated supplier of Chinese heavy-duty truck parts, Mettlead offers more than just components — we offer a partnership built on reliability and flexibility:

• Factory-Direct Pricing: By eliminating middlemen, we pass genuine cost savings directly to your procurement budget.
• Strict Quality Control: Every Long Pin WG4007443013 undergoes dimensional inspection, hardness testing, and surface quality checks before shipment.
• White-Label & Custom Packaging: Need your own branding on the box? We support neutral packaging, private-label printing, and custom packaging solutions to match your distribution needs.
• Comprehensive Parts Range: Beyond this single pin, we supply a full catalog of Sitrak heavy-duty truck parts and braking system components — making consolidated ordering simple.
• Fast & Reliable Delivery: Established logistics channels ensure your orders reach you on schedule, no matter where you’re located.
• Flexible Payment Methods: We support multiple secure and formal payment options to suit your company’s financial processes.
• Factory Visits Welcome: We invite procurement teams to visit our facility and inspect quality processes firsthand.

For a complete overview of all available Sinotruk Sitrak components, explore our Sinotruk Sitrak Truck Parts Full Category Guide.

Frequently Asked Questions – Long Pin WG4007443013

What exactly is the function of Long Pin WG4007443013 in the brake system?

This long pin acts as a guide shaft within the brake caliper assembly. It allows the caliper bracket and brake pads to slide smoothly during braking while maintaining precise alignment. Without a properly dimensioned pin, brake pads can wear unevenly, and braking force distribution becomes inconsistent — which is a serious safety concern on heavy-duty trucks.

How do I know when this long pin needs replacement?

You should inspect the pin during routine brake maintenance. Common signs of wear include visible scoring or grooves on the pin surface, measurable diameter reduction beyond tolerance (±0.02mm from nominal), difficulty sliding the caliper bracket, or uneven brake pad wear. If any of these symptoms appear, replacement is recommended immediately.

Is this Long Pin WG4007443013 an original OEM part or aftermarket?

This pin is manufactured to OEM-equivalent specifications, meaning it matches the exact dimensions, material grade, and surface treatment of the original Sinotruk Sitrak factory part. It passes the same quality benchmarks and fits without any modification required.

Can this pin be used on other Sinotruk models besides Sitrak?

The part number WG4007443013 is specifically cataloged for Sitrak platforms. However, some HOWO and SINOTRUK models may share similar brake caliper designs. We recommend confirming cross-compatibility by providing your VIN or chassis number to our team before ordering.

What material is the Long Pin WG4007443013 made from, and why does it matter?

It’s manufactured from high-grade alloy steel with a surface hardening treatment reaching HRC 58–62. This combination provides a tough, wear-resistant exterior while maintaining a ductile core that absorbs shock loads — essential for a component that endures constant friction and heavy braking forces.

What is the surface treatment, and how does it protect the pin?

The pin receives an anti-corrosion coating that shields it from moisture, road salt, and dust contamination. This treatment significantly extends service life, especially for trucks operating in coastal regions, mining environments, or areas with harsh winter road treatments.

Ready to Source Long Pin WG4007443013? Let’s Talk.

You’ve found the right part — now let’s get it to your warehouse. Whether you need a sample for quality verification, a bulk quote for fleet maintenance, or technical confirmation for your specific Sitrak model, our team is ready to respond quickly.

Get your competitive quote today. Simply contact us with your required quantity, destination, and any packaging preferences. We typically respond within 24 hours with pricing, lead time, and shipping options tailored to your needs.

Mettlead — Your factory-direct source for Sinotruk, Sitrak, HOWO, Shacman, FAW, Weichai, Dongfeng, and Foton truck parts worldwide.