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.

Imperial · Hardware & Fasteners
91236
In stock · ships from Knoxville
The Imperial 91236 is a 90-degree male elbow fitting for heavy-duty truck and trailer air brake systems.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Installs in any air brake system using 1/2" OD tubing and 1/2" NPT female threads.
Part data verified against 1 catalog sources
Numbers this part supersedes or interchanges with. Showing 2 of 2.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It connects 1/2-inch outside diameter (OD) tubing to a 1/2-inch NPT threaded port, allowing air lines to route around corners while maintaining a secure, leak-free connection. These fittings are commonly replaced when air lines are rerouted, damaged, or when leaks develop from corrosion or wear, as they are critical for consistent brake system pressure.
Part Number: 91236
A/B ML ELBOW
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more