4J9224 Ring for Caterpillar Equipment

4J9224 is a transmission seal back-up ring used in equipment manufactured under the Caterpillar brand. The ring is intended for sealing assemblies in Caterpillar articulated dump trucks and backhoe loaders, where it helps limit seal extrusion under high pressure and pressure surges.

This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts). The part is supplied under SKU 4J9224 and is identified in the equipment parts reference as 4J-9224.

Fitment

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

• Caterpillar articulated dump trucks
• Caterpillar backhoe loaders
• Caterpillar 725
• Caterpillar 730
• Caterpillar D250E II
• Caterpillar D300E II
• Caterpillar 416B
• Caterpillar 416C
• Caterpillar 416D
• Caterpillar 416E
• Caterpillar 420D

The model list includes Caterpillar 730 as recorded in the supplied fitment data. Compatibility should be checked against the machine model, serial number, and the sealing assembly position before installation.

Cross-reference numbers

• 4J9224
• 4J-9224

4J-9224 is the hyphenated part-number format associated with SKU 4J9224. The supplied data does not identify additional equipment-manufacturer or supplier reference numbers.

Specifications

The ring is installed as part of a sealing system. Its stated function is to support the seal in high-pressure applications and reduce the risk of extrusion during pressure changes. The dimensions and material listed above apply to the 4J9224 part reference; the mounting position and quantity used depend on the specific Caterpillar machine and seal assembly.