1999-2015 Duramax Calibration Resistor #4 (AP63556)OEM Part Number: 39862

5-06 LLY which came from the factory with a 63

Warm up your engine faster on cold mornings with BD Diesel's High Idle Kit

This new updated PPE Oil Cooler is designed with larger and stronger internal passageways for improved oil and coolant flow

High flow Intake elbow

follow these few suggestions

7L Dynomite Diesel Brand New 20% Over Injectors (DDPNFD67-50)

Standard 4

This o-ring kit from Alliant will include everything you need to reseal

On engines with enhanced fuel flow and larger turbochargers

A rigid aluminum bracket along with vibration isolators allow for versatile and easy installation

Ring Kit (7233DKT)

most people end up focusing too much on the "compressor wheel" since that is what we can typically see