Mishimoto 06-10 Chevrolet/GMC 6.6L Duramax (LLY/LBZ/LMM) Transmission Cooler Line Kit

When you're pushing your 2006-2010 Chevrolet or GMC truck with the 6.6L Duramax engine, especially the LLY, LBZ, or LMM variants, keeping the transmission cool is key to getting that power to the wheels reliably. While an upgraded transmission cooler is a great step, the lines carrying the fluid are just as important. This Mishimoto Transmission Cooler Line Kit is designed to handle the demands of a hard-working truck.

These lines are built with a durable PTFE inner liner that's highly resistant to oil and heat, ensuring it stands up to the harsh conditions under your truck. To handle the increased line pressures often found in trucks with performance transmissions, the PTFE liner is wrapped in a strong nylon braid. This wrap not only prevents the lines from expanding under pressure but also offers protection against abrasion. The kit uses -10AN fittings, which provide a secure and leak-free connection, giving you peace of mind.

This kit fits a range of popular trucks, including the Chevrolet Silverado 2500 HD and 3500, as well as the GMC Sierra 2500 HD and 3500, from 2006 through 2010. Mishimoto backs this transmission cooler line kit with their Lifetime Warranty, so you can be confident in its performance for years to come.