2006-2010 5/8" Allison transmission cooler hose set #50300
Date Added: 11/13/2013
This is the best solution to a problem that GM has failed to resolve. After seeing both the 1/2", and 5/8" hose sets, I would definitely go with the 5/8" set. The 5/8" sets use quality Gates hoses and fittings, where the 1/2" set uses a generic hose.