Belt Tensioner Thermo King SLX
Belt Tensioner Thermo King SLX
$1,700.00
Belt tensioner clutch retrofit for Thermo King SLX 100, 200, 300 and 400 units, supplied as a replacement assembly for the drive layout around the clutch and idler path to help restore correct belt control.
Part number TK-78-1887-AM.
Description
Overview
Belt Tensioner Thermo King SLX fits clutch retrofit tensioner duties on Thermo King SLX 100, 200, 300 and 400 trailer refrigeration units. It manages belt tension around the clutch and idler path, so the drive system can track properly and hold stable adjustment in service. This aftermarket replacement helps workshops fix worn, damaged or poorly adjusting tensioner assemblies.
Features
- Suits Thermo King SLX 100, 200, 300 and 400 applications
- Supports clutch retrofit service on the SLX belt drive system
- Handles tensioning, pulley support and belt adjustment functions
- Helps address pulley wear, spring fatigue and adjuster hardware issues
Specifications and Materials
Belt Tensioner Thermo King SLX serves as an aftermarket replacement for the belt drive and clutch retrofit position on compatible SLX units.
Part number: TK-78-1887-AM.
For manufacturer service literature, see the Thermo King manuals library
Compatibility and Fitment
Check the unit series and clutch retrofit layout before ordering, then compare the tensioner assembly style, pulley arrangement and mounting hardware on the unit. This cross-reference listing means this part is a suitable replacement for the part numbers and applications shown. Some changes in installation may be required. 78-1887, 781887, 781884, 931047, 931431, 936473, 551173, 557072, 510141TKA, 555914, 556283, 511690TKA, 559960TKA, 773038, 773124, 77-3124, 93-1047, 55-9960, 559960, 77-3038, 51-1690, 511690, 78-1884, 78-1791, 781791, 10-78-1887, 10781887
Compliance and Safety
Isolate the unit before working around belts, pulleys and clutch components. After installation, set belt tension correctly, confirm pulley alignment, and recheck all mounting hardware before the unit returns to service.
Trailer Applications
Belt Tensioner Thermo King SLX fits refrigerated trailer service work on SLX fleets where the clutch retrofit drive layout needs repair or rebuild. Workshops often replace this part when pulley wear, spring fatigue or adjustment problems start affecting belt control and drive performance.
Cross-reference and Suitability
This part cross-references to or suits the following equivalent part numbers and compatible alternatives:
| 78-1887 | 781887 | 781884 |
| 931047 | 931431 | 936473 |
| 551173 | 557072 | 510141TKA |
| 555914 | 556283 | 511690TKA |
| 559960TKA | 773038 | 773124 |
| 77-3124 | 93-1047 | 55-9960 |
| 559960 | 77-3038 | 51-1690 |
| 511690 | 78-1884 | 78-1791 |
| 781791 | 10-78-1887 | 10781887 |
Why Choose ICS Trailers
ICS Trailers supports refrigerated transport workshops and fleet maintenance teams, so you can buy this part from a supplier that understands SLX clutch retrofit service requirements.
For related service items, browse Thermo King parts at ICS Trailers
Online prices apply to website orders only. In-store pricing may differ.








