For 2006-2010 LBZ/LMM Duramax trucks, this transmission cooler line kit replaces factory fluid lines with nylon-braided CPE hose and -10AN fittings for a secure, high-flow connection. 2006-2010 Duramax Transmission Cooler Line Kit Every truck owner knows that it doesn't matter how powerful or reliable your engine is if you can't get any power to the wheels. The transmission mated to your 2006-2010 LBZ/LMM Duramax is essential to everything your truck does, and keeping it cool is crucial. Upgrading your transmission cooler with a SPELAB performance transmission cooler is a good start, but the fluid still needs to get to the cooler. That's where this 2006-2010 LBZ/LMM Transmission Line Kit comes in. These high-performance lines are constructed with a durable CPE that's wrapped in a high-strength nylon braid. This wrap prevents expansion and further protects the lines from abrasion. Finally, these lines are capped off with -10AN fittings for a secure and leak-free connection. Like all SPELAB products, these transmission lines are backed by our 12-month warranty. Vehicle Fitment Direct fit for 2006 LBZ Duramax 2007 LBZ Duramax 2007.5 LMM Duramax 2008 LMM Duramax 2009 LMM Duramax 2010 LMM Duramax Key Features High-strength nylon outer braid prevents expansion under high pressure and protects line against abrasion. High-flow -10AN lines and fittings ensure high flow while preventing leaks. SPELAB 12-month warranty. What's Included 1 x -10AN 46.45" Line with 90° and 45° Fittings 1 x -10AN 69.68" Line with 90° Fittings 1 x -10AN 39.76" Line with 90° Fittings 6 x -10AN to 7/8"-14 ORB Fittings 2 x -10AN to M22 x 1.5 Fittings Best For 2006-2010 Chevrolet Silverado and GMC Sierra trucks with 6.6L LBZ or LMM Duramax engines Transmission cooler plumbing upgrades using -10AN line and fitting connections Owners replacing aging or damaged transmission cooler lines Builds needing nylon-braided CPE hose for abrasion resistance and reduced line expansion