2003-2005 GM/Allison TapShifter Duramax L5P Each head is manufactured in

Each head is manufactured in our state-of-the-art cylinder head machine shop and guaranteed to meet or exceed factory specifications

This allows you to keep all factory systems intact yet allow you to safely run 40-45 PSI of boost

Conical AFE 5

Utilizes factory location

2003-2005 GM/Allison TapShifter Duramax L5P Each head is manufactured inThe Fleece Performance TapShifter allows you to shift your 2001 2005 GM 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. The TapShifter can be used in the gas or diesel 2001 2005 trucks with an Allison Transmission. Installation: The TapShifter