Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.
Dexter · Engine
55-27095
In stock · ships from Knoxville
This is a screw-on oil cap designed for Dexter oil bath hubs on trailer axles with a capacity between 9,000 and 15,000 lbs.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 4 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Fits Dexter 9K–15K oil bath hub axles manufactured after October 1989. Outer diameter of threads is 4 inches with 12 threads per inch.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 5 of 5.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It replaces Dexter part numbers 21-36 or 021-036-00 and is typically made of clear Lexan plastic, allowing you to visually check the gear oil level and condition without removing the cap. You would replace this cap if the original is cracked, leaking, or missing its plug, as a damaged cap can lead to lubricant loss and eventual hub bearing failure. It threads directly into the hub and is secured by a large O-ring to prevent leaks.
Part Number: 55-27095
OIL CAP, 9K-15K, 21-36,
Unit: ea
Dealer: KP Services Crossville
Compatibility, alternatives, and more
