Replacement Diesel Coolant Heater for Reliable Engine Preheating
Restore dependable cold-weather starting with this genuine Webasto diesel coolant heater designed for direct replacement applications. Delivering up to 17,000 BTU (5 kW), it supports efficient engine preheating while minimizing cold-start wear and emissions.
Benefits & Use Cases
This heater-only unit is intended for replacing an existing Webasto Thermo Top C / TSL17 heater body without purchasing a full installation kit. Ideal for service repairs, fleet maintenance, and equipment already equipped with compatible fuel, exhaust, and coolant components.
- Direct replacement for Thermo Top C / TSL17 coolant heaters
- Restores reliable engine preheating performance
- Helps reduce cold-start wear and emissions
- Perfect for service replacements and fleet repairs
Technical
- Fuel Type: Diesel
- Voltage: 12V
- Heater Type: Coolant
- Max Heat Output: 17,000 BTU (5.0 kW)
- Warranty: 2 Years
- Webasto Part Number: 1311551 / 1311551A
- Reference Number: 89073M / 89073
Kit Includes
- Webasto Thermo Top C / TSL17 Diesel Coolant Heater (Heater only)
FAQs
Is this a complete heater kit?
No, this listing includes the heater body only. Fuel pump, wiring, exhaust, and coolant components are not included.
What applications is this heater used for?
It is commonly used for engine preheating to improve cold starts, reduce wear, and lower emissions.
Can this replace my existing Thermo Top C heater?
Yes, it is designed as a direct replacement for Thermo Top C / TSL17 heater bodies when the rest of the system is in good condition.
Is professional installation recommended?
Yes, replacement should be performed by a qualified technician familiar with diesel fuel and coolant heating systems.
Need help confirming part compatibility? Talk to a Heatso expert
Technical Specifications of the Webasto Thermo Top C 12V Diesel Coolant Heater Replacement
- Fuel:
- Diesel
- Voltage:
- 12V
- Max. Heat Output:
- 17,000 BTU (5 kW)
- Max. Altitude:
- 9,900 ft (3,000 m)
- Heater model:
- Thermo Top C
Included in the kit:
Replacement Diesel Coolant Heater for Reliable Engine Preheating
Restore dependable cold-weather starting with this genuine Webasto diesel coolant heater designed for direct replacement applications. Delivering up to 17,000 BTU (5 kW), it supports efficient engine preheating while minimizing cold-start wear and emissions.
Benefits & Use Cases
This heater-only unit is intended for replacing an existing Webasto Thermo Top C / TSL17 heater body without purchasing a full installation kit. Ideal for service repairs, fleet maintenance, and equipment already equipped with compatible fuel, exhaust, and coolant components.
- Direct replacement for Thermo Top C / TSL17 coolant heaters
- Restores reliable engine preheating performance
- Helps reduce cold-start wear and emissions
- Perfect for service replacements and fleet repairs
Technical
- Fuel Type: Diesel
- Voltage: 12V
- Heater Type: Coolant
- Max Heat Output: 17,000 BTU (5.0 kW)
- Warranty: 2 Years
- Webasto Part Number: 1311551 / 1311551A
- Reference Number: 89073M / 89073
Kit Includes
- Webasto Thermo Top C / TSL17 Diesel Coolant Heater (Heater only)
FAQs
Is this a complete heater kit?
No, this listing includes the heater body only. Fuel pump, wiring, exhaust, and coolant components are not included.
What applications is this heater used for?
It is commonly used for engine preheating to improve cold starts, reduce wear, and lower emissions.
Can this replace my existing Thermo Top C heater?
Yes, it is designed as a direct replacement for Thermo Top C / TSL17 heater bodies when the rest of the system is in good condition.
Is professional installation recommended?
Yes, replacement should be performed by a qualified technician familiar with diesel fuel and coolant heating systems.
Need help confirming part compatibility? Talk to a Heatso expert
Choosing Guide
Option Choosing Guide for this product is coming soon, please contact [email protected] if you need help picking the right options or have any questions.
Shipping
- United States - 1-5 Working Days
- United Kingdom - 2-5 Working Days
- European Union - 2-7 Working Days
- Australia / New Zealand - 5-14 Working Days
- Rest of World - 5-14 Working Days
There may be a delay if the order is shipped to a PO or parcel shop address. Please note, some couriers do not offer shipping to PO boxes.
View full shipping & Delivery information
Returns
You can return or exchange goods within 14 days from the date of purchase if the item is unused and brand new in unopened packaging. You must contact us before returning any goods, though. Additional deductions might be applied as indicated in the Returns section of our Terms and Conditions.
Warranty Information
Most heaters come with 2 year warranty + optional 1 year extended Warranty available
- Parts - 1 Year Warranty
- Refrigerators - 2 Year Warranty
- AC Systems - 1 Year Warranty
- Heavy duty heating equipment (10 kW+) - 1 Year Warranty
- Other items - 1 Year Warranty
Installation, servicing and maintenance must be done in accordance with manufacturers guidelines. Failure to follow these guidelines will result in voiding your warranty.
We provide free technical and installation support via email or phone to all of our customers who purchase a heater, heater kit or other products from Heatso. We take pride in our customer service and want to ensure that your heater system is properly installed. As a result, if you have any difficulties, please do not hesitate to contact us.
If you require removing and/or refitting your item, please visit a local professional or authorized specialist, if you can not find one you can contact us and we will try to recommend a local partner to assist with the task. The cost of removing and/or refitting this item is not covered by the warranty.
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