2S8939 Ring for Caterpillar

2S8939 is a transmission seal ring for Caterpillar equipment. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is listed for use in transmission-related applications on the Caterpillar machine models and series specified below. The equipment type is included with each model group to support identification during parts selection and service work.

Fitment

• Pipelayer: 578, 583R, 589
• Track loader: 955K, 955L
• Track-type tractor: D10, D10R, D10T, D10T2, D11N, D11R, D11T, D5, D5B, D6D
• Truck: 777
• Wheel dozer: 814
• Wheel loader: 950, 966C
• Wheel skidder: 518C
• Wheel tractor: 641B, 650B, 651E, 657E, 657G
• Winch: 55

Specifications