Airaid MXP Series Intake System 300-221

2007.5-2009 Dodge 6.7L Cummins
Airaid Intake Systems
XDP Part Number:
$5 Price Beat Guarantee

AIRAID's MXP line of " Cold Air Dam" intakes feature a LARGE ONE-PIECE ROTATIONAL-MOLDED air box and a totally redesigned air intake tube that houses a HUGE high flow AIRAID Premium Filter. All kits are engineered to deliver more Torque & Horsepower while improving MPG and come with AIRAID's exclusive " No-Hassle" warranty.


  • Superior horsepower and acceleration gains
  • Replaces stock intake tubing, air filter and air box (where applicable)
  • Easy to install using commonly available tools
  • High airflow premium air filter
  • Washable and reusable air filter media
  • No Hassle Lifetime Warranty

Airaid 300-221 Installation Guide

Mfg. Number:

Customer Reviews - Include your order number for a chance to win a $100 GiftCard

(17 Ratings, 2 Reviews) Average Rating:
WES (ALABAMA) 12/28/2009 9:08 PM
Installed this on my 08' Dodge 6.7L. Definite HP increase with an actual 1mpg increase. Your looking at about 1hour install for someone who is mechanically inclined. The Airaid installation instructions are "spot-on." I looked at many different systems, and kept coming back to this one. Very satisfied thus far! I highly reccommend this system!
Joe Lackey (MO) 9/18/2009 12:05 AM
Just installed this on my 2008 Dodge 2500 diesel, along with a BullyDog PMT. It is amazing. The power is incredible and I am getting 23.6 mpg at 72 mph. Tomorrow I am installing an exhaust and then it'll be done. Codes do show up but with the PMT it is a snap to clear them. I have noticed that after a "learning period" there are fewer codes.