2457781 Air Compressor for Caterpillar Equipment

The 2457781 air compressor is an HVAC system component used in Caterpillar heavy equipment. It circulates refrigerant through the operator-cab HVAC system and is designed to build pressure required for heating, cooling, and air filtration functions. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The compressor is intended for use in Caterpillar excavator equipment identified in the fitment information below. Its configuration includes a 10-cylinder compressor unit, an electromagnetic clutch, a pulley for belt drive, and a housing made of die-cast aluminum. The unit is specified for operation with R134a refrigerant.

Fitment

• Caterpillar excavator
• Caterpillar 323D LN excavator

The listed application is for the HVAC system of the Caterpillar 323D LN excavator. Equipment configuration and installed HVAC components may vary, so the part number should be checked against the part installed on the machine before replacement.

Cross-reference numbers

• 2457781
• 245-7781

Part number 245-7781 is the hyphenated format of 2457781 used for the same compressor identification. Both number formats are associated with this product description.

Specifications

The compressor is installed as part of the refrigerant circulation circuit in the Caterpillar HVAC system. During operation, the compressor builds refrigerant pressure and maintains airflow-related HVAC operation in the operator cab. The listed dimensions and weight describe the product supplied under part number 2457781.