Description:

Replacement for Dexter 21-88 Oil Bath Cap. 3.5" Thread OD 9K to 10K 12 Thread. The drum casting numbers will be 9-123 or 8-415 only. Fits Drum Number 8-415 (After July 2009) - Fits Drum Number 8-430 (After April 2013). Machined out of solid billet aluminum! Practically Indestructible!. This fits the very common DEXTER 10,000# General Duty Axles made After 2009..