(2) Billet Aluminum 3.5" Oil Bath Caps – Replaces Dexter 21-88 – 10K General Duty Axles
Part Number: 21-88 Billet-KITx2
Pair of billet aluminum machined 3.5" oil bath caps designed to replace the common Dexter 21-88 clear plastic oil caps. Built from solid billet aluminum for maximum durability, these caps eliminate cracking and breakage common with factory plastic versions.
Designed for Dexter 9,000 lb to 10,000 lb General Duty oil bath axles manufactured after July 2009. Compatible with drum casting numbers 8-415 and 9-123 where applicable.
Features
- Solid billet aluminum construction
- Direct replacement for Dexter 21-88 oil caps
- 3.5" thread outside diameter
- 12-thread design
- Fits common Dexter 10K General Duty axles (after July 2009)
- Compatible with drum casting number 8-415 (after July 2009)
- Compatible with drum casting number 9-123
- Includes new rubber O-ring and rubber plug
- Oil level can be checked through center plug opening
Specifications
| Thread Outside Diameter | 3.5" |
| Thread Count | 12 Thread |
| Material | Billet Aluminum |
| Axle Capacity Range | 9,000 lb – 10,000 lb General Duty |
| Replaces | Dexter 21-88 Plastic Oil Cap |
Kit Includes
- 2x 21-88 Billet Aluminum Oil Caps
- 2x 046-032-00 O-Rings
- 2x 010-163-00 Rubber Plugs
Important: Confirm hub thread diameter and drum casting number before ordering. Designed for Dexter General Duty oil bath hubs manufactured after 2009.