Skip to product information
SKU:
NLT2T00583
Ships for free in 2–4 business days.
3-Belt Set 78-1724 / 78-1686 / 78-1492 for Thermo King T-600 / T-800R
$177.69
In Stock
$177.69
Sale price
$177.69
Regular price
Three-belt service set for Thermo King T-600 and early T-800R units using Yanmar/Thermo King TK249, TK370 or TK374E engines.
Estimated delivery between
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
| Application | Fitment Notes |
|---|---|
| Thermo King T-600 | With matching TK249/TK370/TK374E engine arrangement. |
| Thermo King T-800R | Commonly listed for units before 02/2013; verify serial. |
Product Overview
This set services the major belt drives in the refrigeration unit rather than supplying three identical belts. Replacement listings identify separate diesel-to-electric, electric-to-compressor and water-pump belts.
The set includes references 78-1724, 78-1686 and 78-1492. T-800R application is commonly limited to early production before 02/2013, so unit serial/date should be checked.
Key Features & Performance
- Three different drive belts in one service set
- 78-1724 diesel/electric drive belt
- 78-1686 electric/compressor belt
- 78-1492 water-pump belt
Common Reasons for Replacement
- Cracking, glazing, fraying, or looseness
- Squeal or poor accessory drive
- Preventive replacement during major service
Technical Specifications
- Quantity: 3 belts
- Part Type: Refrigeration Unit Drive Belt Set
OE / Reference Numbers
- 78-1724
- 78-1686
- 78-1492
- 77-2848
Frequently Asked Questions
How do I confirm compatibility? Confirm all three belt numbers and the Thermo King unit serial/date before ordering, especially on T-800R units.
Is this an OEM part? This listing is for a replacement part. Brand names and OE/reference numbers are used to identify fitment unless the listing specifically states that the item is genuine OEM.