1T1691 Torque Converter Impeller

The 1T1691 is a torque converter impeller for Caterpillar equipment. It is used in Caterpillar engine machines, track-type skidders, track-type tractors, and wheel-type skidders, including the models listed below. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The impeller is identified by the Caterpillar equipment part number 1T-1691 and is supplied under SKU 1T1691. The part designation may appear with or without the hyphen in the number: 1T1691 or 1T-1691.

Fitment

• Caterpillar 3304 engine machines
• Caterpillar 517 track-type skidders
• Caterpillar D4HTSK III track-type tractors
• Caterpillar 4S equipment
• Caterpillar D4H III track-type tractors
• Caterpillar D4H XL track-type tractors
• Caterpillar 518C wheel-type skidders

The listed applications cover Caterpillar equipment in which the part is used as the impeller component of the torque converter. Fitment should be checked against the machine model and the part number installed in the equipment before replacement.

Cross-reference numbers

Numbers 1T-1691 and 1T1691 refer to the same part-number designation, with the difference limited to the use of a hyphen in the written format.

Specifications

The stated dimensions are length 36.2 cm, width 36.2 cm, and depth 4.4 cm. The listed weight is 7.02 lb. The part is supplied as a torque converter impeller; no additional components are specified as included with the impeller.