3T7390 Ring for Caterpillar Transmission

3T7390 is a transmission seal ring for Caterpillar equipment. The listed application covers Caterpillar tracked bulldozers and the Caterpillar PL72 pipe layer.

This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by SKU 3T7390 and is listed in the source data as catalog number 3T-7390. The catalog application includes several tracked bulldozer models and one pipe layer model. The model designations below are reproduced as the applicable equipment references for this part.

Fitment

The 3T7390 ring is listed for the following Caterpillar tracked bulldozers:

• Caterpillar 57
• Caterpillar 57H
• Caterpillar 7
• Caterpillar 7A
• Caterpillar 7S
• Caterpillar 7S LGP
• Caterpillar 7SU
• Caterpillar 7U
• Caterpillar D7H

The part is also listed for the following Caterpillar pipe layer:

• Caterpillar PL72

Fitment is specified by the equipment model designations above. The listed application does not provide additional machine serial-number ranges, production years, transmission assembly numbers, or installation-position details.

Cross-reference numbers

• 3T7390
• 3T-7390

3T7390 and 3T-7390 are the two catalog-number formats provided for this ring. No additional equipment-manufacturer or supplier part numbers are specified in the available product data.

Specifications

The dimensions supplied for the part are 8.79 cm in length, 8.79 cm in width, and 0.3 cm in depth. The stated weight is 0.1 lb. The available specification data does not identify the ring material, internal or external diameter, hardness, sealing profile, thread information, or the number of rings included.