Pulley Idler Thermo King SLX SLXi
Pulley Idler Thermo King SLX SLXi
$330.00
Pulley idler for Thermo King SLX and SLXi trailer refrigeration units, supporting belt tracking through the front-end drive system when the original pulley is worn or noisy.
Part number TK-78-1847-AM.
Description
Overview
Pulley Idler Thermo King SLX SLXi suits the front-end belt drive on compatible Thermo King SLX and SLXi trailer refrigeration units. On these unit families, belts transmit power to the fans, water pump and alternator, so pulley condition matters when the drive path starts running noisy, rough or out of line. This part gives you a clean replacement point when the original idler is worn, the bearing has deteriorated or the belt path no longer tracks properly.
Features
- Aftermarket idler pulley for compatible Thermo King SLX and SLXi units
- Supports smooth belt routing through the front-end accessory drive path
- Useful when pulley wear, bearing noise or alignment issues are present
- Often replaced during related belt and spindle service work
Specifications and Materials
Pulley Idler Thermo King SLX SLXi is an aftermarket replacement for compatible Thermo King transport refrigeration units. Match the pulley position and unit family before ordering so the belt path is rebuilt correctly. Part number: TK-78-1847-AM.
See the Thermo King SLXi operator manual for unit family technical guidance on belt-driven accessories.
Compatibility and Fitment
Check the existing pulley location and confirm the unit is from the SLX or SLXi family before ordering. 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. 78-1847, 781847, 78-1623, 781623
Compliance and Safety
Shut the unit down and isolate it before working near the belt path. Keep clear of rotating belts and fans during inspection or replacement work, and refit guards before returning the unit to service.
Trailer Applications
Pulley Idler Thermo King SLX SLXi fits transport refrigeration service work on compatible trailer units where the front-end drive system needs a replacement idler. It is a sensible change-out when the belt system is already apart for inspection, because worn idlers can contribute to poor belt tracking and added noise. It also suits maintenance jobs where the drive path is being refreshed alongside related pulley, belt or spindle components.
Cross-reference and Suitability
This part cross-references to or suits the following equivalent part numbers and compatible alternatives:
| 78-1847 | 781847 | 78-1623 |
| 781623 |
Why Choose ICS Trailers
ICS Trailers supplies Thermo King transport refrigeration parts used in routine drive system repairs, so this pulley can be ordered alongside the belts and related spindle components commonly checked in the same job.
Browse Thermo King parts at ICS Trailers for related transport refrigeration replacements.
Online prices apply to website orders only. In-store pricing may differ.









