Find the Manual Transmission Components, parts, and accessories you need to restore the functionality of your 2001-2004 Chevy/GMC 6.6L LB7 Duramax. You'll find top brands such as Performance Accessories and Dorman that manufacture high-quality Manual Transmission Components. Manual Transmission Components such as shift extensions, shift knob, and gear shifter boots are available. Restore the functionality of your 2001-2004 Chevy/GMC 6.6L LB7 Duramax with the Manual Transmission Components, parts, and accessories available at XDP.