3G3747 Ring for Caterpillar Equipment

3G3747 is a transmission seal back-up ring used in Caterpillar equipment. The ring supports the sealing system in high-pressure applications and helps prevent seal extrusion during pressure increases. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

Fitment

The ring is listed for the following Caterpillar equipment models and machine series:

• Tracked bulldozers: 10, 58, 58L, 59L, 59N, 8, 8A, 8S, 8U, 9, 9A, 9C, 9S, 9SU, 9U, D10N, D10R, D10T, D10T2, D8L, D9N, D9R, D9T, D9, D9 GC.
• Wheel bulldozers: 844, 844H, 844K, 854G.
• Wheeled tractor-scrapers: 631D, 631E, 631G, 637D, 637E, 637G.
• Excavators: 245, 245B, 245D.

Fitment should be checked against the equipment model, serial number and the part number being replaced before installation.

Cross-reference numbers

• 3G-3747
• 3G3747

Specifications