Buy Caterpillar 1S9874 - KIT--(Air Compressor Valve) at wholesale prices with easy payment and fast shipping options. Save up to 50% OFF OEM pricing. Compatible Machines:Compatible Models:Units Containing The Spare Part :- 2P7800 AIR COMPRESSOR GROUP (3306)- 8S894 AIR COMPRESSOR ASSEMBLY (966C)- 9S9743 AIR COMPRESSOR ASSEMBLY (966C)- 4N3927 AIR COMPRESSOR ASSEMBLY--Type 1 (966C)- 4N3927 AIR COMPRESSOR ASSEMBLY--Field Installation--Type 2 (966C)- 8S9915 AIR COMPRESSOR ASSEMBLY--Type 2 (920)- 8S4637 AIR COMPRESSOR ASSEMBLY--Type 1 (920)- 8S4637 AIR COMPRESSOR ASSEMBLY--Type 2 (920)- 9S9742 AIR COMPRESSOR ASSEMBLY--Type 1 (920)- 9S9742 AIR COMPRESSOR ASSEMBLY--Type 2 (920)- 9S9741 AIR COMPRESSOR ASSEMBLY (930)- 4N7634 AIR COMPRESSOR GROUP--Type 2 (613)