Transmission Coolers & Lines

Get the Direct-Fit Transmission Coolers & Lines that will upgrade and fix the transmission cooling in your 2004.5-2005 Chevy/GMC 6.6L LLY Duramax. The cooler lines are available in factory replacement or performance durable braided hoses with billet -AN fittings. Replace the problematic factory thermal bypass valve (if equipped) with a performance transmission cooler thermal bypass valve. Get increased cooling efficiency with an aftermarket transmission cooler that has a greater fluid capacity and core volume. Industry-leading brands such BD-Power, Mishimoto, Dorman, and more are offered.