2001-2004 Duramax LB7 DSP5 Switch (FTDSP5LB7)2001 2004 Duramax LB7 DSP5 Switch (FTDSP5LB7) A switch that comes with blue and black wires, specifically used only for LB7.

and prolonged filter life

And because TTY bolts are yielded by design

Note: Required custom tuning for 2004

Modifications to the Driven Diesel regulator bracket

adding a layer of strength for extended service life

the KC Vortex turbine wheel was made for the 6

Essential for Upgrades & Maintenance: Ideal for swapping to high-performance valve springs or replacing worn components

Recommended Injectors: 30% to 100% with twin pumps

this additive provides an extra layer of wear protection and enhanced lubrication

From stock to 700+ hp ground pounders

All Dualoy pistons feature a high strength top ring carrier to improve strength of the top land

We spent years testing