1077787 Ring Top for Caterpillar Equipment

1077787 is a top piston ring used in piston assemblies installed in Caterpillar asphalt pavers. The ring is fitted to the piston, which operates with the connecting rod and crankshaft as part of the engine mechanism. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by the Caterpillar reference number 107-7787 and is listed for specific Caterpillar asphalt paver models. Fitment should be checked against the machine model and the existing part number before installation.

Fitment

• Caterpillar AP-1000 asphalt paver
• Caterpillar AP-1000B asphalt paver
• Caterpillar AP-1050 asphalt paver
• Caterpillar AP-1050B asphalt paver
• Caterpillar AP-1055B asphalt paver
• Caterpillar AP-900B asphalt paver
• Caterpillar BG-240C asphalt paver
• Caterpillar BG-2455C asphalt paver
• Caterpillar BG-245C asphalt paver
• Caterpillar BG-260C asphalt paver

Cross-reference numbers

The following numbers identify the same part reference in the supplied product data:

• 1077787
• 107-7787

1077787 is the numeric SKU format, while 107-7787 is the hyphenated part-number format. Both references are associated with the top ring listed for the specified Caterpillar asphalt paver applications.

Specifications

The listed dimensions and weight are reproduced from the available product data. The product data identifies the component as a top ring; it does not specify additional rings, piston components, or installation hardware included with the part.