1W1663 Main Bearing

1W1663 is a main bearing for Caterpillar equipment, including machines equipped with Caterpillar engines. The part is used in Caterpillar engine-machine applications, excavators, integrated toolcarriers, and track-type loaders. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The bearing is identified by SKU 1W1663 and is listed for use with the Caterpillar equipment models and machine series specified below. The available product data identifies the component as an engine main bearing and does not specify an individual engine model, bearing position, or undersize or oversize value.

Fitment

• Caterpillar 3204
• Caterpillar 215B
• Caterpillar IT18
• Caterpillar IT18B
• Caterpillar IT28
• Caterpillar IT28B
• Caterpillar 931
• Caterpillar 931B
• Caterpillar 943
• Caterpillar 953

The listed applications cover the following Caterpillar equipment groups: engine-machine applications, excavators, integrated toolcarriers, and track-type loaders. Fitment should be checked against the machine model and the required bearing size before installation, because the available data does not provide a specific crankshaft journal size or an undersize or oversize designation for this individual part.

Cross-reference numbers

1W1663 and 1W-1663 refer to the same listed bearing number in different number formats. No additional supplier cross-reference numbers are provided in the available product data.

Specifications

The dimensions and weight above describe the listed product data. The available information does not state bearing shell material, oil-hole configuration, wall thickness, journal diameter, clearance, or the exact undersize or oversize measurement. These parameters are therefore not assigned to 1W1663 in this description.