9k/10k/12k/15k Trailer Axle Oil Bath Cap Assembly – 9000 lb/10000 lb/12000 lb/15000 lb Capacity – (Dexter Compatible 21-36)


Trailer Experts are ready to help answer product questions and help find what you need! 



  • 1 Dexter 021-036-00 Oil Cap
  • 1 Dexter 010-050-00 O-Ring
  • 1 Dexter 046-032-00 Filler Plug.
  • Fits Most 10k, 12k, 15k axles (Dexter, TK, Texas Pride, etc)

It’s important for your trailer axles to stay lubricated as you drive down the road, and the oil bath cap assembly is an important part of that process. This cap fits most 9K, 10K, 12K, and 15K Dexter trailer axles, so if you’re putting together a new trailer, or you need to replace the assembly on a trailer you already use, then this part is a great choice. It includes the oil cap, O-ring, and filler plug that you need to keep everything properly lubricated, and we know you’ll love how reliable the part is. Let us know if you have any questions!

  • Replaces the Dexter 21-37 oil cap

Additional information

Weight2 lbs