Dexter Oil Cap Set for Oil Bath Axles — 4" 12-Thread (2-Pack)
This listing is for a Dexter oil cap kit designed for heavy-duty oil bath trailer axles. The package includes two complete oil caps with sealing components.
Caps are stamped 21-36 and are commonly used on 10KHD–15K Dexter oil bath axles requiring a 4.0" diameter, 12-thread cap.
Features
- Designed for oil bath hub systems
- Heavy-duty threaded steel oil caps
- Includes sealing components
- Dexter OEM-style replacement
- Used on commercial and heavy trailer axles
Specifications Manufacturer Dexter Axle Kit Part Number K71-148-00-1 Cap Marking 21-36 Thread Size 4.0" — 12 threads Axle Rating 10KHD–15K (oil bath only) What’s Included 2 oil caps, 2 O-rings, 2 rubber plugs
Important Use Case: These caps are used on oil bath hub systems, commonly found on heavy-duty boat, equipment, and commercial trailers.
They are not compatible with EZ-Lube axles, grease hubs, Bearing Buddy systems, or standard grease caps.
Fitment Notes
Typically used on Dexter heavy-duty oil bath axles rated from 10KHD to 15K.
Will NOT fit 2009-newer Dexter 10K “General Duty” axles.
Always verify cap diameter, thread count, and axle type before ordering. Refer to manufacturer documentation for exact application.
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