AMP RESEARCH 76404-01A PLUG-N-PLAY PASS THROUGH HARNESS FOR AMP RESEARCH POWERSTEPS WITH PLUG-N-PLAY INSTALLATION Steering The stock Duramax engine oil

The stock Duramax engine oil pan leaves a lot to be desired

We spared no expense to give you the best intake on the market

OEM Style Decoupler Pulley

Because Cognito utilizes a lower clevis system

AMP RESEARCH 76404-01A PLUG-N-PLAY PASS THROUGH HARNESS FOR AMP RESEARCH POWERSTEPS WITH PLUG-N-PLAY INSTALLATION Steering The stock Duramax engine oilAdd multiple accessories to your truck with the AMP Research 76404 01A Plug N Play Pass Through Harness. This harness allows you to plug in your AMP Research PowerSteps and still have access to your OBDII port. Designed for use on AMP Research PowerStep Plug N Play applications. FEATURES: Pass Through Harness Allows Additional Plug In For OBDII Port