6S3172 External Snap Ring

The 6S3172 is an external snap ring used in Caterpillar equipment. It is listed for Caterpillar asphalt pavers, cold planers, and engine-machine applications. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by SKU 6S3172 and is supplied as an external retaining ring. The available application data associates this reference with several Caterpillar machine models and series listed below. Model compatibility should be checked against the equipment configuration and the installed part before replacement.

Fitment

• Caterpillar AP-1050B asphalt paver
• Caterpillar AP-1055D asphalt paver
• Caterpillar AP-650B asphalt paver
• Caterpillar AP-655D asphalt paver
• Caterpillar BG-225C asphalt paver
• Caterpillar BG-2455D asphalt paver
• Caterpillar BG-245C asphalt paver
• Caterpillar BG-655D asphalt paver
• Caterpillar PR-450C cold planer
• Caterpillar 3046 engine-machine application

The listed fitment covers equipment identified in the available parts data as Caterpillar asphalt paver, cold planer, and engine-machine applications. The model designations are retained as provided for parts identification: AP-1050B, AP-1055D, AP-650B, AP-655D, BG-225C, BG-2455D, BG-245C, BG-655D, PR-450C, and 3046.

Cross-reference numbers

• 6S3172 — Caterpillar equipment manufacturer reference
• 6S3172 — CTP aftermarket reference and SKU

The same number, 6S3172, is used as the equipment parts reference and as the CTP aftermarket reference for this external snap ring. No additional supplier numbers are provided in the available product data.

Specifications