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.
Post Onsite · Hardware & Fasteners
81318C
In stock · ships from Knoxville
This is a 3-inch aluminum pipe nipple with one belled end and one grooved end.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It is used in pneumatic trailer unloading systems to connect piping where a quick, secure, and sealed joint is needed. The belled end is designed for welding or clamping, while the grooved end mates with a grooved coupling for a reliable mechanical connection. You typically replace this nipple if it becomes cracked, corroded, or damaged from impact, or when reconfiguring the pipe layout on a bulk tank trailer.
Part Number: 81318C
3 ALUM NIPPLE, BELLED GROOVED
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
