Wehrli Custom Fab 4" Cold Air Intake Kit With Air Box 04.5-05 GM 6.6L Duramax LLY Select Color:Semi-Gloss Black 5/8" hard chrome plated heat

5/8" hard chrome plated heat treated alloy steel

Gear Ratio: 3-Stage Planetary 343:1

This control arm kit is specifically designed to replace the factory upper control arms

or exhaust

The Walker MAP Sensor is the key to restoring proper engine performance by delivering accurate intake pressure data straight to your ECM

Wehrli Custom Fab 4" Cold Air Intake Kit With Air Box 04.5-05 GM 6.6L Duramax LLY Select Color:Semi-Gloss Black 5/8" hard chrome plated heatYou can increase your fuel systems but if your air intake doesn't match the added fuel you're burning then you are simply wasting fuel. Increase your Duramax air with Wehrli Custom Fab 4" Cold Air Intake Kit! If youre looking to wake up your LLY Duramax, airflow is one of the first places to start. The LLY Duramax Cold Air Intake Kit with Air Box is designed to improve airflow, throttle response, and overall engine efficiency while giving your engine