Caterpillar Part reference
Caterpillar part number 0055421 is cataloged as a tee-union. The catalog associates it with a hydraulic system lines group and an operator station alarm module group, but these are catalog occurrences only; confirm the recorded conditions and exact application before ordering.
Recorded applications
Selected catalog references that list this part. A catalog association does not confirm fitment for every machine or configuration.
Catalog context
Model photoCheck the signed-in Part Book for available diagrams and the complete catalog breakdown.
| Part number | Description |
|---|---|
| 00***01 | elbow (to serial no 1md225) |
| 00***04 | elbow |
| 0055421 | tee-union (current part) |
| 00***15 | tee-flared |
Selected entries from this catalog unit. Other part numbers are masked. Confirm the full breakdown and your machine configuration before ordering.
View model pageGeneral guidance
In general, a tee-union is a fitting with three connection points, commonly used to split or join a fluid or electrical line into a branch. Its exact dimensions, material and construction are not stated in the catalog data for this part.
Use part number 0055421 as the reference for this tee-union. Before ordering, check the recorded catalog conditions and confirm that the listed model, group and subgroup associations match your machine's configuration.
Catalog references
Model photo