Caterpillar 2W1223 Water Pump Assembly

The Caterpillar 2W1223 water pump is a precision-engineered cooling system component designed to circulate coolant through the engine block, radiator, and hoses to maintain optimal operating temperatures. It features a cast iron housing for structural rigidity, a polished stainless-steel shaft that resists corrosion, and a high-efficiency precision-balanced impeller for maximum coolant flow. Hardened bearing retainers improve bearing retention under heavy-duty vibration and shock loads. Improved oil and coolant seals extend service life in demanding construction and industrial applications. This pump assembly replaces multiple Caterpillar OEM part numbers including 0R1242, 1W2929, 1W5643, 1W5644, 1W6446, 2W0691, 2W1222, 3857197, 4N0455, 4N0660, 4N3778, 7N9001, 8N0251, 8N5796, 8N7256, 8N8270, and 8N8271. It is compatible with Caterpillar 3204, 3204T, 1160, 3160, 3208, 3024, and 3402 diesel engines. Typical machine applications include hydraulic excavators (215, 215B, E180), track-type tractors (D3, D3B, D3C, D4B, D4C, D4H, D5C), wheel loaders (910, 916, 926, 926E, 926F, 931, 931B, 931C, 935B, 935C, 943, 953), and integrated tool carriers (IT12, IT18, IT28, IT28B).