Fleece Performance Allison Tapshifter For 03-05 6.6L Duramax 2020-2026-gladiator-jt D-763-3 View larger Turbo Up

D-763-3 View larger Turbo Up Pipe Kit

Precision-fit EPDM rubber perimeter seals

30 1/2 Inch Muffler

in an attempt to figure out what works best for our environments

Fleece Performance Allison Tapshifter For 03-05 6.6L Duramax 2020-2026-gladiator-jt D-763-3 View larger Turbo UpFleece Performance Allison Tapshifter For 2003 2005 Chevy GMC 6. 6L Duramax The Fleece TapShifter allows you to shift your 2003 2005 Allison Transmission with the touch of a button just like the 2006 and newer trucks. Perfect for towing, drag racing, daily driving and everything in between, the TapShifter installs in no time and provides factory like operation, functionality and styling. Installation: The TapShifter installs using OEM high quality