1916521 CATERPILLAR Single Cylinder, Air Compressor

The 1916521 Single Cylinder, Air Compressor is engineered to provide reliable pneumatic pressure for heavy commercial vehicle systems. Designed with high-strength components, this unit ensures consistent air production through its optimized 360cm³ swept volume and robust single-cylinder architecture. Its water-cooled design helps maintain optimal operating temperatures, preventing thermal degradation during extended service cycles.

This air compressor is the OE-equivalent of the CATERPILLAR 191-6521 single cylinder air compressor used in CATERPILLAR heavy-duty machinery. It features precise dimensions including a Ø92.00 mm bore and a 54 mm stroke to meet strict industrial standards. The unit is fully compatible with the specified CATERPILLAR systems, ensuring seamless integration with existing engine architectures.

For workshop technicians, this component offers streamlined installation with standard port sizes such as the 7/8’’-14 UNF air inlet and 3/4’’-16 UNF water ports. The assembly includes an ESS feature and a water-cooled valve plate to enhance durability. Regular maintenance of the cooling lines and checking the 3/16’’-12 UN outlet port ensures the long-term reliability of the pneumatic system within the vehicle's engine compartment.