Webasto Thermo Top C 12V Diesel Coolant Heater Replacement
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Availability:
Usually ships in 3-4 days
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Calculated at Checkout. Most in-stock orders ship from our Costa Mesa, CA warehouse the same or next business day. View Shipping Details
Warranty:
Products include manufacturer-backed warranty coverage. Terms vary by product and brand. View Warranty Details
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Eligible unused items in their original packaging may be returned within 14 days of delivery. Terms and fees may apply. View Return Policy
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Core Features & Benefits
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
Part numbers:
- Heater only: 1311551A
- Alternative format: 1311551
- Reference Numbers: 89073M; 89073
Browse Webasto Manuals & Technical Documentation
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
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