GDP 2017-2019 6.6L Duramax Custom T87 Transmission Tuning Package Fuel System Accessories 2001-2007 Duramax 6.6L LBZ/LLY/LB7 The XB's deliver the DRL

The XB's deliver the DRL you demand

Some aftermarket pulleys will switch to a different length bolt and spacer which will not work with the our billet pulley

Emissions Level 1 Level 2 Level 3 Level 4 Level 5 ON 0HP 50HP 75HP 100HP OFF 0HP 50HP

One (1) Titanium Signature Series Fuel System for 2005-2018 & 2021-2024 Dodge RAM Cummins 5

GDP 2017-2019 6.6L Duramax Custom T87 Transmission Tuning Package Fuel System Accessories 2001-2007 Duramax 6.6L LBZ/LLY/LB7 The XB's deliver the DRLGDP 2017 2019 6. 6L Duramax Custom T87 Transmission Tuning Package Package Includes: HP Tuners MPVI4 (Optional) 4 HP Tuners Tuning Credits (Optional) GDP Transmission Tune Note An HP Tuners MPVI4 & 4 Tuning credits are required to load the transmission tune into the vehicle