1U1738 Backup Ring for Caterpillar Equipment

The 1U1738 backup ring is a transmission seal ring used with equipment manufactured by Caterpillar. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

Fitment

The 1U1738 backup ring is listed for the following Caterpillar equipment models and model series:

• Track-type tractors: D8, 57H, 8, 8A, 8SU, 8U, D8N, D8R, D8R II, D8T, D9, D9R, D9T, D9 GC
• Wheel bulldozer: 854K
• Excavators: 235C, 245, 245B, 245D, 5130, 5230

The fitment information is grouped by Caterpillar equipment type as follows:

• Track-type tractor applications include the D8 and D9 model series, as well as the listed 8-series and 57H model designations.
• The wheel bulldozer application is Caterpillar 854K.
• Excavator applications include the 235C, 245-series, 5130 and 5230 models.

Cross-reference numbers

Part number 1U-1738 is the number shown for the Caterpillar backup ring application. The unhyphenated format 1U1738 corresponds to the product SKU.

Specifications