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.
Sealco · Air System
110197
In stock · ships from Knoxville
This is a two-port service relay valve used in 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
Designed for non-ABS single and tandem trailer air brake systems. Mounting requires an external 6002 or 6006 nipple bracket (not included). Always verify port sizes and crack pressure match the original valve on your specific trailer.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 7 of 7.
Different year, make, or config? Get a confirmation against your truck in under a minute.
Its job is to speed up the application and release of the service brakes by relaying air directly from the reservoir to the brake chambers when you press the pedal. It's commonly installed on single-axle trailer service brakes or in tandem axle-by-axle brake setups. You'd replace it if your current valve is leaking, sticking, or not responding quickly enough during braking, which can cause uneven brake wear or a delayed response.
Part Number: 110197
RELAY VALVE
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system
