Product Introduction

• Structure: Encased in a durable, flame-retardant ABS plastic housing with an integrated mounting tab for secure installation. It features a 5-pin automotive connector for plug-and-play integration and internal contacts rated for 24V DC and 40A continuous current.

• Performance: The relay provides reliable switching of high-current circuits using low-control signals, protecting the vehicle’s delicate control switches from damage. The sealed housing resists dust, moisture, and vibration, ensuring stable operation in harsh truck environments.

Core Function

1. Circuit Switching: Acts as an electronic switch to control high-current loads (e.g., hydraulic pumps, fans) using low-current signals from the vehicle’s ECU or control panel.

2. Component Protection: Isolates the vehicle’s low-power control circuits from high-power loads, preventing damage to switches and wiring.

3. Overload Handling: The 40A rating ensures it can handle the high inrush current of inductive loads like motors and solenoids.

Relay WG1642822084 Sinotruk Sitrak – OEM Electrical Relay for Heavy-Duty Truck Cab Systems

When your Sinotruk Sitrak truck demands reliable electrical switching performance, the Relay WG1642822084 delivers exactly that. Engineered to OEM specifications, this genuine-equivalent relay ensures stable current control across critical cab circuits—so your fleet stays on the road, not in the workshop. Whether you’re sourcing replacements for routine maintenance or stocking inventory for your aftermarket business, this relay offers the precision fit and dependable performance that Sitrak trucks require.

At Mettlead, we supply this relay directly from our factory-partnered warehouses in China, which means you get competitive pricing without sacrificing quality. As a result, procurement managers worldwide trust us to deliver authentic Sinotruk Sitrak parts with fast lead times and flexible payment options.

Key Features and Benefits of Relay WG1642822084

This isn’t just another generic relay sitting on a shelf. The Relay WG1642822084 Sinotruk Sitrak is purpose-built for heavy-duty applications, and here’s why it matters to your bottom line:

• OEM-Matched Performance: Manufactured to meet original Sinotruk specifications, ensuring seamless integration with your Sitrak truck’s electrical architecture.
• Durable Construction: Built with high-quality copper contacts and heat-resistant housing to withstand the vibration, temperature extremes, and electrical loads common in commercial truck environments.
• Consistent Switching Reliability: Provides stable on/off cycling for cab electrical systems, reducing the risk of intermittent faults that lead to costly downtime.
• Corrosion-Resistant Terminals: Treated pins and connectors resist moisture and oxidation, extending service life even in humid or dusty operating conditions.
• Drop-In Replacement: The exact dimensional match eliminates the need for wiring modifications or adapter brackets—saving your technicians valuable installation time.
• Factory-Direct Pricing: By sourcing directly through Mettlead, you eliminate middlemen markups while maintaining strict quality standards.

In other words, this relay protects your electrical circuits the way they were designed to be protected—reliably, consistently, and without compromise.

Technical Specifications – Relay WG1642822084 Sinotruk Sitrak

Accurate specifications matter when you’re matching parts to your fleet. Below you’ll find the detailed parameters for this relay:

Parameter	Specification
Part Number	WG1642822084
Brand Compatibility	Sinotruk Sitrak
Component Type	Electromagnetic Relay
Rated Voltage	24V DC
Contact Configuration	SPDT (Single Pole Double Throw)
Max Switching Current	20A
Coil Resistance	Standard OEM specification
Housing Material	Flame-retardant plastic
Contact Material	Silver alloy
Operating Temperature	-40°C to +85°C
Mounting Type	Plug-in (relay socket compatible)
Weight	Approx. 50g
Certification	ISO/TS 16949 manufacturing standard
Packaging	OEM neutral / Custom labeling available

Note: Specifications are based on OEM reference data. If you need additional technical documentation or datasheets, our team is ready to assist.

Application Scenarios – Which Vehicles Use Relay WG1642822084?

Understanding exactly where this relay fits helps you make confident purchasing decisions. The Relay WG1642822084 is designed specifically for the Sinotruk Sitrak series of heavy-duty trucks, and it plays a vital role in several cab electrical subsystems.

Compatible Vehicle Models

• Sinotruk Sitrak C7H (long-haul tractor unit)
• Sinotruk Sitrak C5H (medium-to-heavy-duty distribution truck)
• Sinotruk Sitrak G7 (next-generation heavy hauler)
• Other Sitrak platform variants using the WG1642822084 relay in their cab wiring harness

Typical Application Scenarios

Inside the cab, this relay controls critical functions that drivers depend on daily:

1. HVAC Blower Control: The relay switches the heating and air conditioning blower motor, ensuring cabin climate comfort during long-distance hauls across varied climates.
2. Lighting Circuit Switching: It manages interior and auxiliary lighting circuits, providing stable illumination without voltage drops or flickering.
3. Wiper Motor Activation: In heavy rain or dusty road conditions, this relay ensures the windshield wipers respond instantly when the driver activates them.
4. Horn Circuit: Delivers the full current needed for the truck horn to operate at peak volume—a matter of safety on busy highways and construction sites.
5. Auxiliary Equipment: Powers additional cab accessories such as sleeper berth fans, refrigerator units, or aftermarket communication equipment.

Consequently, when this relay fails, it doesn’t just cause inconvenience—it can compromise driver safety and operational efficiency. That’s why proactive replacement with a quality-assured part is always the smarter choice.

OEM and ODM Capabilities – Custom Solutions for Your Business

Beyond standard supply, Mettlead understands that distributors and fleet operators often need more than off-the-shelf parts. Therefore, we offer flexible customization options for the Relay WG1642822084 Sinotruk Sitrak:

• White-Label Packaging: We can supply this relay in neutral packaging, allowing you to apply your own brand identity for resale in your local market.
• Custom Packaging Design: Need branded boxes with your logo, part number system, and barcode? Our packaging team handles it from design to print.
• Bulk Order Flexibility: Whether you need 50 pieces or 5,000, our production lines scale to meet your volume requirements without extending lead times.
• Quality Certification Documentation: We provide COC (Certificate of Conformity), test reports, and inspection records for every batch—essential for importers who need customs clearance documentation.
• Strict Quality Control: Every relay undergoes electrical performance testing, insulation resistance verification, and contact durability checks before shipment.

In addition, we welcome factory visits. If you’d like to inspect our quality processes firsthand, our team in China will arrange a comprehensive facility tour for you.

Customer Case Study – How a Middle Eastern Fleet Operator Solved Relay Failures with WG1642822084

To illustrate the real-world impact of sourcing the right Relay WG1642822084 Sinotruk Sitrak parts, consider this recent customer experience:

A fleet management company operating 120 Sinotruk Sitrak C7H trucks in Saudi Arabia was experiencing repeated cab electrical failures. Their trucks frequently lost HVAC function during summer operations—when cabin temperatures easily exceed 50°C. After investigation, their maintenance team traced the root cause to substandard aftermarket relays that couldn’t handle the sustained thermal load.

They reached out to Mettlead seeking a dependable source for the Relay WG1642822084. Here’s what happened next:

1. Initial Consultation: Our technical team confirmed the OEM specification match and recommended our quality-tested relay as a direct replacement.
2. Sample Testing: We shipped 10 sample units for the customer’s engineering team to validate. All 10 passed their 72-hour continuous load test without failure.
3. Bulk Order: The customer placed an initial order of 500 pieces with custom packaging bearing their company logo.
4. Result: Six months after installation, zero relay-related HVAC failures were reported across their entire fleet. Their maintenance costs for cab electrical issues dropped by approximately 35%.

This case demonstrates exactly why part authenticity and quality sourcing matter. When you choose the genuine-spec Relay WG1642822084 Sinotruk Sitrak from Mettlead, you’re investing in uptime, not just a component.

Frequently Asked Questions – Relay WG1642822084 Sinotruk Sitrak

What is the function of Relay WG1642822084 in a Sinotruk Sitrak truck?

The Relay WG1642822084 serves as an electromagnetic switch within the truck cab’s electrical system. It allows a low-current signal from the driver’s controls to activate high-current circuits such as the blower motor, wipers, horn, and lighting systems. Without a functioning relay, these circuits cannot operate properly.

Is the Relay WG1642822084 a direct fit for all Sitrak models?

Yes, this relay is designed as a direct plug-in replacement for Sinotruk Sitrak trucks that specify part number WG1642822084 in their wiring diagrams. It fits the C7H, C5H, and G7 series without any modifications. However, we always recommend verifying the part number against your truck’s specific cab harness configuration before ordering.

How can I verify that this relay meets OEM quality standards?

Every batch of Relay WG1642822084 supplied by Mettlead undergoes rigorous testing including contact resistance measurement, dielectric strength testing, and mechanical endurance cycling. We provide test reports upon request, and our manufacturing partners operate under ISO/TS 16949 quality management systems.

What causes Relay WG1642822084 to fail prematurely?

Common failure causes include prolonged exposure to excessive heat (above rated temperature), voltage spikes from alternator malfunctions, moisture ingress into the relay socket, and using the relay beyond its rated switching current. Installing a quality relay and maintaining proper cab electrical system health significantly extends relay service life.

Can I order Relay WG1642822084 in bulk with custom packaging?

Absolutely. Mettlead offers white-label and custom packaging services for bulk orders. Whether you need neutral boxes for your own branding or fully customized retail packaging, we accommodate your requirements. Minimum order quantities are flexible—simply contact us with your specifications.

What is the typical lead time for Relay WG1642822084 orders?

Standard stock orders ship within 3–5 business days. Custom packaging orders typically require 10–15 business days depending on quantity and packaging complexity. We prioritize fast, reliable delivery through trusted international logistics partners.

Does temperature affect the performance of Relay WG1642822084?

This relay is rated for operation between -40°C and +85°C, which covers the vast majority of commercial trucking environments worldwide. In extreme heat conditions, ensure proper cabin ventilation around the relay module to prevent heat buildup beyond rated limits.

Explore More Sinotruk Sitrak Parts at Mettlead

The Relay WG1642822084 is just one component in our comprehensive catalog of Sinotruk Sitrak truck parts. Whether you need additional cab electrical components, engine parts, or chassis accessories, we’ve got you covered:

• Browse our full Sitrak Heavy-Duty Parts collection for more genuine-spec components.
• Explore our Truck Cab Parts category for relays, switches, sensors, and other cab electrical items.
• Visit our complete Sinotruk Sitrak Truck Parts Full Category Guide for a comprehensive overview of every part we supply.

Ready to Order Relay WG1642822084 Sinotruk Sitrak? Let’s Talk.

You’ve done the research. You know the specs. Now it’s time to secure your supply. Whether you need a single sample for verification or a bulk order with custom branding, our team is standing by to assist you.

Here’s what happens when you reach out:

1. You send us your inquiry with quantity and delivery requirements.
2. We respond within 24 hours with pricing, availability, and shipping options.
3. You approve, we ship—simple as that.

Contact Mettlead today to request your quotation for Relay WG1642822084 Sinotruk Sitrak. Factory-direct pricing, strict quality control, and reliable global delivery—that’s the Mettlead advantage.