Sinotruk Heater Relay AZ1630840321
| Product Name | Heater Relay |
| Product Number | AZ1630840321 |
| MOQ | 1 |
| Warranty period | 3 Months |
| Package | Carton |
| Application | Sinotruk |
| Original | China |
Product Description
Product Introduction
This Heater Relay AZ1630840321 is an OEM electrical control component for Sinotruk heavy-duty trucks (e.g., HOWO series). It features a compact black engineering plastic housing with an integrated mounting tab and a 4-pin electrical connector for secure installation. Designed to handle the high current demands of the vehicle’s auxiliary heating system, it adheres to strict OEM quality and performance standards, ensuring reliable switching operation in high-vibration, dusty, and temperature-fluctuating heavy-duty working environments.
Core Functions
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High-Current Switching: Acts as an electromagnetic switch to control the high-current supply to the vehicle’s auxiliary heater, protecting delicate control switches and wiring from burnout.
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Heater System Control: Enables the activation and deactivation of the auxiliary heating system, ensuring efficient and safe operation in cold weather conditions.
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Durable & Reliable Design: The sealed housing and heavy-duty internal contacts resist corrosion and wear, ensuring stable performance even under prolonged use and extreme temperature fluctuations.
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Easy Installation: The integrated mounting tab and 4-pin connector allow for straightforward installation and replacement, minimizing vehicle downtime during maintenance.
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OEM Compatibility: Precisely matches the original vehicle’s heater system wiring harness pinouts and current specifications, supporting direct plug-and-play replacement without modification.
Sinotruk Heater Relay AZ1630840321 – OEM Electrical Control Component for HOWO Heavy-Duty Trucks
The Sinotruk Heater Relay AZ1630840321 is a genuine OEM-grade electrical switching component engineered for the auxiliary heating systems of Sinotruk HOWO series heavy-duty trucks. Built to withstand extreme vibration, dust ingress, and wide temperature fluctuations, this heater relay delivers consistent, fail-safe current switching that keeps cabin and engine heating systems performing at peak efficiency across demanding operating conditions.
At Mettlead, we supply this Sinotruk Heater Relay AZ1630840321 directly from our factory-partnered warehouses in China, offering procurement managers competitive pricing, fast lead times, and the confidence of strict quality control on every unit shipped.
Key Features and Benefits of the Sinotruk Heater Relay AZ1630840321
- Exact OEM Fitment – Manufactured to Sinotruk original specifications, the AZ1630840321 heater relay ensures drop-in compatibility with HOWO and related heavy-truck platforms without modification.
- High-Current Switching Capacity – Rated to handle the substantial amperage demands of auxiliary heating circuits, preventing contact welding and premature failure under load.
- Durable Engineering Plastic Housing – The compact black housing resists UV degradation, chemical exposure, and mechanical impact common in under-dash and engine-bay installations.
- Secure 4-Pin Connector – A locking 4-pin electrical interface eliminates intermittent connections caused by road vibration, reducing diagnostic downtime for fleet operators.
- Integrated Mounting Tab – Purpose-designed bracket tab allows single-bolt installation, cutting replacement labor time to minutes.
- Proven Reliability in Harsh Environments – Tested against Sinotruk's OEM durability benchmarks for temperature cycling (−40 °C to +125 °C), salt spray, and mechanical shock.
Technical Specifications
| Parameter | Detail |
|---|---|
| Part Number | AZ1630840321 |
| Brand Compatibility | Sinotruk (HOWO, HOWO A7, HOWO T7H) |
| Component Type | Heater Relay / Electrical Control Relay |
| Connector Pins | 4-Pin |
| Housing Material | Black Engineering Plastic (PA66 + GF) |
| Mounting Style | Integrated Tab (Single-Bolt) |
| Operating Temperature | −40 °C to +125 °C |
| Rated Voltage | 24 V DC |
| Quality Standard | OEM-equivalent, Strict QC Inspection |
| Packaging Options | Original / White-label / Custom Packaging |
| Origin | China |
OEM and ODM Capability
Mettlead supports flexible procurement models for the Sinotruk Heater Relay AZ1630840321 and our full range of Sinotruk HOWO truck parts:
- White-Label Packaging – Receive units in neutral packaging ready for your own brand labeling, ideal for regional distributors building private-label catalogs.
- Custom Packaging – Full bespoke packaging design including your logo, part number cross-reference, and multilingual labels to meet local market requirements.
- Bulk and MOQ Flexibility – Whether you need a trial order of 10 pieces or a container-load replenishment, our production pipeline scales to your schedule.
- Strict Quality Control – Every batch undergoes electrical function testing, dimensional verification, and visual inspection before dispatch.
- Factory Visit Welcome – Procurement teams are invited to inspect our facilities, audit processes, and verify stock firsthand.
Browse our complete electrical parts catalog for additional relays, switches, sensors, and wiring harnesses compatible with Chinese heavy-duty truck brands.
Frequently Asked Questions
Is the AZ1630840321 heater relay an original Sinotruk part?
This Sinotruk Heater Relay AZ1630840321 is manufactured to OEM specifications and passes the same functional and dimensional checks as factory-installed components. Mettlead sources directly from certified production lines in China to guarantee authenticity and performance parity.
Which truck models does this heater relay fit?
The AZ1630840321 is designed for Sinotruk HOWO series trucks, including HOWO A7 and HOWO T7H variants equipped with auxiliary cabin heating systems. Always cross-reference your vehicle's VIN or existing relay part number before ordering.
What is the typical lead time for bulk orders?
Standard stock orders ship within 3–5 business days. For large-volume or custom-packaged orders of the Sinotruk Heater Relay AZ1630840321, lead time is typically 7–15 business days depending on quantity and packaging requirements.
Can I order a sample before committing to a large purchase?
Yes. Mettlead encourages sample evaluation. Request a sample through our inquiry form and our sales team will arrange shipment with full traceability documentation.
What payment methods do you accept?
We offer flexible and secure payment options including T/T (bank transfer), Letter of Credit, Western Union, and trade assurance platforms to protect both parties in international transactions.
Get a Competitive Quote for the Sinotruk Heater Relay AZ1630840321
Ready to secure factory-direct pricing on the AZ1630840321 heater relay or any other Sinotruk HOWO electrical component? Our team responds to inquiries within 12 hours with pricing, MOQ details, and shipping estimates tailored to your destination.
Contact Mettlead now
– Send your part list, target quantity, and delivery address, and receive a no-obligation quotation from our dedicated B2B sales team today.
