Description

Overview

Lower Drive Belt Carrier Ultra XT/XTC is a compressor to gearbox drive belt for selected Carrier Transicold refrigeration units. It transfers rotational drive through the lower belt path, so the compressor gearbox system can operate correctly during normal reefer service. Because belt wear can lead to slip, noise and reduced drive efficiency, timely replacement helps support dependable refrigeration performance and reduces avoidable downtime.

Features

• Lower drive belt for compressor to gearbox operation
• Used on selected Carrier Transicold trailer refrigeration units
• Supports consistent drive transfer through the lower belt path
• Suitable for scheduled maintenance and worn belt replacement

Specifications and Materials

Lower Drive Belt Carrier Ultra XT/XTC is a V-belt style drive component used in the lower compressor gearbox drive arrangement on compatible refrigeration units. It is identified as a compressor to gearbox or lower drive belt and cross-references to BX63.

Part number: CA-50-00178-19-OP.

See the manufacturer competitive parts flyer

Compatibility and Fitment

Check the installed belt path and unit model before ordering, because Carrier used different drive layouts across refrigeration platforms. This belt suits Carrier X2 2100, X2 2500, Ultra XT, Ultra XTC, Ultima XTC and Genesis R90 applications, and it is used as a lower drive compressor gearbox belt for Ultra XT, XTC and X2 2100/2500 units. This part is a suitable replacement for the part numbers and applications shown. Some changes in installation may be required. 50-00178-19, 500017819, CA-50-00178-19-AM, CA500017819AM, 5507819, CR400537, BX63

Compliance and Safety

Inspect pulley condition, alignment and tension during installation, because a new belt will not run correctly on damaged or misaligned hardware. If the old belt shows glazing, cracking or edge wear, also inspect the compressor gearbox drive components before returning the unit to service. Correct tension matters because an overly loose belt may slip, while excessive tension can shorten bearing life.

Trailer Applications

Lower Drive Belt Carrier Ultra XT/XTC suits refrigerated trailers and temperature controlled transport equipment running compatible Carrier trailer refrigeration units. It is a practical service item during preventive maintenance, belt noise diagnosis and compressor gearbox drive repairs. Lower Drive Belt Carrier Ultra XT/XTC also helps workshops keep older X2 and Ultra XT/XTC fleet equipment operating reliably.

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 focuses on trailer and refrigeration parts, with service information kept clear and workshop friendly. You can confirm the fitment group and cross-reference details before ordering, which helps reduce selection errors and unnecessary downtime. Browse Carrier parts at ICS Trailers in our Carrier category