Water Pump Belt Thermo King RD-II TD-II
Water Pump Belt Thermo King RD-II TD-II
$25.00
Water pump belt for Thermo King RD-II, TD-II, TS and UTS units using Yanmar 3.74 or 3.95 engines, suited to the water pump drive position when the old belt is worn, cracked or no longer holding stable tension.
Part number TK-78-1026-AM.
Description
Overview
Water Pump Belt Thermo King RD-II TD-II suits the water pump drive on Thermo King transport refrigeration units that use Yanmar 3.74 and 3.95 engine platforms. It is the belt to replace when the water pump drive is cracked, glazed, stretched or no longer holding stable tension through service.
Features
- Used at the water pump drive position rather than the alternator or electric engine belt positions in the same system.
- Suits RD-II and TD-II applications, and also appears across TS and UTS Yanmar-driven unit families that use the same belt reference group.
- Matches Yanmar 3.74, 3TNE72 and 3.95 engine applications used in Thermo King reefer units.
- Useful when replacing a worn belt during cooling unit service or belt-drive fault finding.
Specifications and Materials
Product type: water pump V-belt.
Application: Thermo King RD-II, TD-II, TS and UTS units with Yanmar 3.74 and 3.95 engine families.
Engine references: Yanmar 3TNE72, 3.74, 374, 3.95, 395.
Part number: TK-78-1026-AM.
See the Gates CoolRunner belt cross-reference guide
Compatibility and Fitment
Check the belt position before ordering, because these units can also use separate belts for the compressor, alternator and electric engine drive. 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. 78-1026, 781026, 77-2372, 772372, 9170C56H16, 40-0534, 400534, CB0012, CP10534
Compliance and Safety
Fit the belt with the correct routing and tension, then recheck alignment after initial run time. If the old belt shows glazing, fraying or uneven wear, inspect the pulleys and driven components as well before returning the unit to service.
Trailer Applications
Water Pump Belt Thermo King RD-II TD-II is used on trailer refrigeration units where the Yanmar-driven water pump circuit relies on this belt size and path. It also suits TS and UTS applications using the same engine family, so matching the unit model and drive position matters before ordering.
Cross-reference and Suitability
This part cross-references to or suits the following equivalent part numbers and compatible alternatives:
| 78-1026 | 781026 | 77-2372 |
| 772372 | 9170C56H16 | 40-0534 |
| 400534 | CB0012 | CP10534 |
Why Choose ICS Trailers
Water Pump Belt Thermo King RD-II TD-II belongs in the same service job as other engine-side and belt-drive reefer parts, and ICS Trailers keeps that Thermo King range together for refrigerated trailer maintenance. Browse Thermo King parts at ICS Trailers
Online prices apply to website orders only. In-store pricing may differ.






