Speed Stop & Masonbilt 5/8 Transmission Cooler Lines For 03-05 GM 6.6L Duramax 2006-2017 Harley-Davidson Softail or job-site terrain

or job-site terrain

With a smooth interior surface

while providing a free-flowing exhaust and the perfect amount of back pressure

5-inch intake tube for unmatched airflow

2004-2005 Honda Civic EX / GX / LX

Speed Stop & Masonbilt 5/8 Transmission Cooler Lines For 03-05 GM 6.6L Duramax 2006-2017 Harley-Davidson Softail or job-site terrainDo you have leaky transmission lines? This is the last set of transmission lines you'll ever need. In a joint venture between Speed Stop Auto Repair and Masonbilt Diesel Performance, we have developed the most durable, serviceable, and the ONLY DOT approved transmission line set with a LIFETIME warranty. All of these lines are made by hand, in house, with equipment we own, meaning that we have complete control over quality and know that each line is