Description

Overview

Optibelt Engine To Electric Motor Belt suits Thermo King T-Series units where the diesel engine drives the electric motor through the standby belt path. It covers T-1000R, T-1080R, T-1080S and T-1200R applications directly, and it also suits related T-1000, T-1000M and Spectrum variants when the fitted layout matches.

Features

• Suits T-1000R, T-1080R, T-1080S and T-1200R applications
• Also suits selected T-1000, T-1000M and Spectrum variants when the belt path matches
• Handles engine-to-electric-motor drive duty on T-Series standby layouts
• Built for transport refrigeration belt service where correct pulley matching matters

Specifications and Materials

Optibelt Engine To Electric Motor Belt is a drive belt for Thermo King T-Series standby systems. Match the belt path and pulley layout before ordering, especially when the unit has mixed service history or non-original routing. Part number: TK-78-1669-OP.

See the Thermo King belt guide for belt construction details and service context

Compatibility and Fitment

Check the installed belt path, pulley layout and model designation before ordering, because T-Series units can share model families while using different belt arrangements. 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. 78-1669, 781669, 781-669, CP 10506, CP10506, CP-10506, TK-78-1669, TK781669, TK-78-1669-AM, TK781669AM

Compliance and Safety

Isolate the unit before service, then set belt tension and pulley alignment to the unit requirement so the belt tracks cleanly from first run. Recheck tension after run-in, because glazing or edge wear usually points to misalignment or over-tension.

Trailer Applications

Optibelt Engine To Electric Motor Belt fits Thermo King trailer refrigeration units that use a dedicated engine-to-electric-motor belt in the T-Series standby drive. It covers the T-1000R, T-1080R, T-1080S and T-1200R group directly, and it also suits related T-1000, T-1000M and Spectrum applications when the fitted layout matches.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Why Choose ICS Trailers

ICS Trailers stocks Thermo King drive parts, so you can order this belt for T-Series service without shifting between unrelated product groups.

Browse Thermo King parts at ICS Trailers