| Competitor Part Number | Competitor Name | Interchange Type | Notes |
|---|---|---|---|
| CUM66638 | CUMMINS | Direct Replacement | |
| 66638 | CUMMINS | Direct Replacement | |
| 66638RX | CUMMINS | Direct Replacement | |
| 66638PX | CUMMINS | Direct Replacement | |
| 66638NX | CUMMINS | Direct Replacement | |
| 66638-1 | CUMMINS | Direct Replacement |