Gain up to 10 additional RWHP with our cast aluminum high flow intake horn for the 2017-2019 L5P 6.6L Duramax! Our intake horn directly replaces the smaller (2.4" diameter) plastic molded stock intake runner with our larger (3.3" diameter) cast aluminum model.

Kit Contents:

• Cast aluminum intake horn
• Square cut O-ring
• Billet aluminum fitting for PCV connection
• M8x1.25 mounting hardware

Application Notes

This intake horn is a direct replacement for the stock GM intake horn. No modifications or tuning are required to take advantage of this simple upgrade!