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Volvo D13 Thermostat Replacement | Volvo VNL Thermostat | Volvo Truck Thermostat | Volvo VN VNL Thermostat Volvo D13 21613426 | MACK MP8 Thermostat | Made in Germany
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Volvo D13 Thermostat Replacement | Volvo VNL Thermostat | Volvo Truck Thermostat | Volvo VN VNL Thermostat Volvo D13 21613426 | MACK MP8 Thermostat | Made in Germany
ZTech engine thermostat offers superior coolant temperature control and improved engine performance, perfect for semi truck drivers who operate under harsh conditions.
Volvo D13 Thermostat Replacement | Volvo VNL Thermostat | Volvo Truck Thermostat | Volvo VN VNL Thermostat Volvo D13 21613426 | MACK MP8 Thermostat | Made in Germany
Item #: 41602684

Volvo D13 Thermostat Replacement | Volvo VNL Thermostat | Volvo Truck Thermostat | Volvo VN VNL Thermostat Volvo D13 21613426 | MACK MP8 Thermostat |

Item #: 41602684
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ZTech engine thermostat offers superior coolant temperature control and improved engine performance, perfect for semi truck drivers who operate under harsh conditions.
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What Stands Out

Precision Engineering
Manufactured in Germany, this thermostat exemplifies top-notch engineering, ensuring optimal performance and durability for Volvo D13 and MACK MP8 engines.
Perfect Fit
Designed specifically for Volvo VNL and VN models, this thermostat guarantees a hassle-free installation, reducing maintenance time and ensuring peak engine efficiency.
Enhanced Performance
Replacing the thermostat with this high-quality part leads to improved temperature regulation in your engine, enhancing performance and longevity while preventing overheating.

Product Details

Shop for ZTech Engine Thermostat 21613426 Replacement for Volvo VNL, Volvo D13, and MACK at Ubuy Samoa. Get the best deals and fast shipping for your Volvo and MACK trucks.
  • Genuine ZTech Engine Thermostat 21613426 designed for Volvo VNL, Volvo D13 and MACK engines
  • Manufactured in Germany with high-quality materials
  • Designed for precise temperature control at 82 degrees
  • Upgrade your Volvo truck for reliable temperature regulation
  • Promotes efficient cooling for prolonged engine life
  • Easy installation with optimized compatibility for Volvo vehicles' coolant system

Who Should Buy?

Suitable For
  • Fleet Managers

    Ideal for fleet managers needing reliable thermostat replacements for multiple Volvo and Mack trucks to ensure smooth operations.

  • Long-Distance Drivers

    Perfect for long-distance truck drivers requiring dependable performance in varying temperatures to maintain engine efficiency.

  • Mechanics and Technicians

    Recommended for professional mechanics needing high-quality parts for Volvo D13 and MP8 engines to enhance repair reliability.

Not Suitable For
  • Light-Duty Vehicles

    Not suitable for light-duty vehicles as this thermostat is specifically designed for heavy-duty Volvo and Mack trucks.

Product Description

Volvo D13 Thermostat Replacement | Volvo VNL Thermostat | Volvo Truck Thermostat | Volvo VN VNL Thermostat Volvo D13 21613426 | MACK MP8 Thermostat | Made in Germany

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Customer Questions & Answers

  • Question: What makes the Volvo D13 thermostat essential for my truck?

    Answer: The Volvo D13 thermostat is crucial for regulating your truck's engine temperature, ensuring optimal performance and efficiency. It opens and closes at specific temperatures to maintain the ideal coolant flow, preventing overheating or excessive cooling. Proper temperature regulation is vital for engine longevity and fuel efficiency. If your engine runs too hot or too cold, it can lead to reduced performance and higher emissions. Therefore, using a quality thermostat like the Volvo D13 ensures reliable performance in various driving conditions.
  • Question: How do I know if I need to replace my Volvo VNL thermostat?

    Answer: Signs that indicate the need for replacement of your Volvo VNL thermostat include engine overheating, fluctuating temperature gauges, or a check engine light indicating cooling system issues. If you notice coolant leaks or inconsistent engine performance, it's time for a check. Regular inspections can help spot these issues early. Addressing thermostat problems promptly ensures your engine maintains peak performance and prevents costly repairs down the line.
  • Question: Can I use a Mack MP8 thermostat in my Volvo D13?

    Answer: While the Mack MP8 thermostat might fit physically, it is not recommended to interchange it with the Volvo D13 thermostat. Each thermostat is specifically designed for its engine model to ensure optimal performance and temperature regulation. Using the correct thermostat promotes efficiency and reliability for your vehicle. Always choose parts that are engineered for your specific system to avoid complications down the road.
  • Question: What is the typical lifespan of a Volvo Truck thermostat?

    Answer: The lifespan of a Volvo Truck thermostat typically ranges from 100,000 to 150,000 miles, but it can vary based on operating conditions and maintenance practices. Factors such as frequent short trips, heavy loads, or extreme temperatures can affect durability. Regular maintenance and checks can help prolong the thermostat's lifespan. Keeping an eye on engine performance and temperature can also signal when it's time for a replacement.
  • Question: Are aftermarket thermostats a good option for Volvo trucks?

    Answer: Aftermarket thermostats can be a viable option, but they may not always match the quality and performance of OEM parts like the Volvo D13 thermostat. OEM parts are designed to meet exact specifications, ensuring proper function. When considering aftermarket options, seek reputable brands that offer comparable quality to maintain your engine's health. This choice will ultimately depend on your goals for performance and your budget.
  • Question: What are the installation steps for the Volvo D13 thermostat?

    Answer: Installing a Volvo D13 thermostat involves several key steps: First, ensure the engine is cool and disconnect the battery. Next, drain the coolant from the radiator, then carefully remove the thermostat housing. Replace the old thermostat with the new unit, ensuring it is seated properly. Reassemble the housing, refill the cooling system with fresh coolant, and restart the engine to check for leaks. Always follow the vehicle's service manual for detailed instructions, and consider consulting a professional if unsure.
  • Question: What additional parts should be replaced when changing the Volvo VN VNL thermostat?

    Answer: When replacing the Volvo VN VNL thermostat, it is advisable to also replace the gasket and consider flushing the cooling system. The gasket ensures a secure seal to prevent leaks, while a flush can remove contaminants and debris. This maintenance helps ensure the new thermostat operates efficiently and prevents potential issues caused by old coolant or debris. Regular coolant maintenance contributes to a healthier engine and overall vehicle performance.
  • Question: What is the significance of the part number Volvo D13 21613426?

    Answer: The part number Volvo D13 21613426 refers to a specific thermostat designed for the Volvo D13 engine series. This unique identifier helps ensure that you are purchasing the correct replacement part for your vehicle model. Using the right part guarantees compatibility and optimal performance, as it's engineered to fit your specific engine's requirements. When sourcing parts, always refer to this number to ensure you receive the correct item for your maintenance needs.
  • Question: How can I identify a faulty thermostat in my Volvo truck?

    Answer: Identifying a faulty thermostat can be done by looking for a few key symptoms: Engine overheating, fluctuating engine temperature readings, or coolant leaks are primary indicators. Additionally, if you notice the heater blowing cold air when it should be warm, this may suggest an issue with the thermostat. Regular monitoring and diagnostics can help pinpoint problems early and facilitate timely replacements, which is crucial for maintaining your engine's health.
  • Question: Where can I buy a Volvo D13 thermostat replacement in Samoa?

    Answer: You can conveniently purchase a Volvo D13 thermostat replacement, including options for the Volvo VNL and Mack MP8, through Ubuy. They offer a wide selection of automotive parts, ensuring you find the correct thermostat for your truck model. Ubuy's platform is user-friendly, allowing you to navigate and select products easily, making your shopping experience efficient and straightforward. Plus, you can trust in their reliable service and support for any inquiries you might have.

ZTECH Thermostats Editorial Review

ZTech Replacement for VOLVO TRUCK VN VNL Thermostat Manufacturer Part Number 21613426 and MACK MP8 thermostat kit 21613426 Thermostat 82 degrees is a direct replacement for the original thermostat at half the price. Customers have reported that it eliminated error codes and worked perfectly in their Volvo VNL 780. Although one customer recommends buying original Volvo parts, stating they had a bad experience with China made products, the majority of customers are satisfied with the product's quality and cost-effectiveness.

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Pros

  • Direct replacement for the original thermostat
  • Eliminates error codes
  • Half the price of original Volvo parts
  • Works perfectly in Volvo VNL 780

Cons

  • One customer reported a bad experience with China made products

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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”

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Features & Benefits

  • Made with high-grade materials and precise construction.
  • Works perfectly with the vehicles coolant system.
  • Easy installation process that can be done within minutes.
  • Keeps your car running efficiently even in extreme temperatures.
  • Drastically improves overall power delivery of many modern engines.
  • Compatible with Volvo VNL D13 or MACK MP8 trucks.

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