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Knox Trailers · Hardware & Fasteners
29512863
In stock · ships from Knoxville
This is a genuine Allison O-ring designed to seal the connection between the transmission cooler element and the cooler housing.
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 prevents transmission fluid from leaking out of the cooling loop, which helps maintain proper fluid pressure and cooling. A worn or hardened O-ring can cause external fluid leaks, so replacing it during a cooler service or when leaks are found is a common maintenance step. While primarily cataloged for Allison automatic transmissions, this Viton O-ring also cross-references to Detroit Diesel applications.
Part Number: 29512863
O-RING / INTER
Dealer: Knox Trailers
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