8G2194 Transmission O-Ring for Caterpillar Equipment

The 8G2194 transmission O-ring is a sealing ring used in transmission and torque converter assemblies of Caterpillar equipment. It is installed in rotary coupling applications to transfer oil between a stationary component and a rotating component and to limit fluid leakage during operation. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The seal is used in transmission systems where O-rings engage or actuate clutches, gearbox components, and brakes. The part is identified by SKU 8G2194 and may also be written with a hyphen as 8G-2194.

Fitment

The 8G2194 O-ring is listed for the following Caterpillar machine models and series:

• Track-type tractors:
  • 5
  • 55
  • 5A
  • 5P
  • 5S
  • D4H
  • D4H III
  • D4H XL
  • D5H
  • D5H XL
  • D5M
  • D5N
  • D6GC
  • D6M
  • D6N
  • D6R
  • D6R II
  • D7R
  • D7R II
• Pipelayers:
  • 561M
  • 561N
  • 572R
  • 572R II
  • 583R
  • 587R
  • 587T
  • PL87
• Track-type skidders:
  • 517
  • 527
  • D4HTSK II
  • D4HTSK III
  • D5HTSK II

Fitment should be checked against the machine model, serial number, and the part number removed from the transmission or torque converter assembly before installation. The listed equipment includes several machine families with different transmission configurations, so model identification alone may not confirm every individual application.

Cross-reference numbers

8G2194 and 8G-2194 are two written formats for the same listed part number. No additional supplier numbers are provided in the available product data.

Specifications

The available data identifies the component as a transmission sealing O-ring but does not specify the elastomer compound, hardness, internal diameter, cross-section, operating temperature range, or pressure rating. These parameters should be confirmed from the service documentation for the applicable Caterpillar machine and transmission assembly.