1. Cold Air Intakes
  2. Jeep
  3. Grand Cherokee
  4. 2008
  5. Airaid
FITS 2008 Jeep Grand Cherokee
Airaid CAD Cold Air Intake System with SynthaMax Dry Filter - Stage 2 - Open

Airaid CAD Cold Air Intake System with SynthaMax Dry Filter - Stage 2 - Open

Item # AR311-178
lowest price pledge
Our Price: $374.55
You Save: $93.64
Cold Air Intakes
Confirmed to Fit
2008 Jeep Grand Cherokee

5.7L V8 Engine - HEMI

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

This item qualifies for Free Shipping
Shipping Weight: 7 lbs
Airaid Intake System - AR311-178
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

The best technical support and full cold air intakes installation instructions. Lowest price Grand Cherokee cold air intakes guarantee and expert service. Jeep Grand Cherokee, 2008 cold air intakes by Airaid are available from etrailer.com. For expert service call 800-298-8924 to order your Airaid CAD Cold Air Intake System with SynthaMax Dry Filter - Stage 2 - Open part number AR311-178, or order online at etrailer.com.
  • All Info
  • Reviews (2)
  • Q & A (0)
  • Photos
  • Why etrailer?

2008 Jeep Grand Cherokee - Airaid CAD Cold Air Intake System with SynthaMax Dry Filter - Stage 2 - Open

  • Open Box/Heat Shield
  • Intake System
  • Airaid
  • Dry Filter
  • Tube Included
  • SynthaMax Filter

Powder coated steel heat shield blocks engine heat while the open design boosts air draw to increase horsepower and torque for your Jeep Grand Cherokee. Polyethylene intake tube and dry performance air filter included.


  • Stage 2, open cold air intake (CAI) improves airflow into your engine, boosting horsepower and torque
    • Open system draws in more cold, dense air than a closed system
  • 1-Piece, powder coated steel heat shield blocks out engine heat to maximize cold air draw
    • Top-mounted rubber gasket seals against the hood to help keep hot air from seeping in
  • Rotomolded, cross-linked, high-density polyethylene intake tube increases air volume and velocity
    • Resists engine heat better than steel and aluminum tubing
    • No pleats or breaks in the tube means decreased turbulence
  • Easy-to-clean, dry air filter provides excellent engine protection while still allowing for improved airflow
    • 2 Layers of 100-percent synthetic material sandwiched between stainless steel mesh
    • 99.6-Percent filtration efficiency rate
    • Washable and reusable for easy maintenance - no need to oil
    • Durable urethane frame
  • Sensor pad(s) on intake tube provide relocation points for factory sensors (where applicable)
  • Easy installation
    • Uses factory mounting points
    • Includes stainless steel clamps with silicone and urethane couplers
  • Custom fit for your vehicle
  • Made in the USA
  • Lifetime warranty

Cold air is denser than hot air, and denser air provides more oxygen for more complete fuel combustion. More oxygen = more combustion = more power and better efficiency for your engine. The Airaid Cold Air Dam (CAD) intake system applies this simple formula to ramp up your engine's horsepower and torque.

Cold Air Dam Intake System

Airaid Intake Installed

The CAD system retains the stock location of your air filter but utilizes a more open design that draws in more cold, dense air than your factory closed box. Unlike many similar systems, the CAD system also has an air dam that helps to block hot engine air. The air dam consists of a powder coated steel heat shield that surrounds the air filter and is lined with a rubber gasket that creates a seal with the hood of your vehicle. This isolates the air filter from engine heat - all the way up to the hood - thus helping to ensure that the air that is pulled into the system is cooler and denser.

The rotomolded intake tube also generates more airflow to the engine. The tube's smooth, wide-open design delivers high-volume, high-velocity air into the throttle body. Not only does the tube allow air to flow along an unrestricted path, but it is also free of noise baffles that would hinder airflow. And the cross-linked, high-density polyethylene construction resists heat better than steel or aluminum tubing.

SynthaMax Dry Air Filter

Airaid SynthaMax Air Filter Layers

This Airaid intake kit includes a SynthaMax air filter that offers improved airflow and has a 99.6-percent filtration rate for superior protection. The large, 360-degree conical filter is composed of 2 layers of synthetic material that filter out contaminants while allowing clean air through. The synthetic material is sandwiched between 2 layers of stainless steel mesh that provide rigid durability.

This Airaid SynthaMax filter is washable and reusable. The dry filter does not need to be oiled, which makes for easy maintenance. It is recommended that you clean your SynthaMax filter every 30,000 to 50,000 miles with the Airaid cleaning kit (sold separately).

311-178 Air Aid Cold Air Dam Intake Kit with Syntha Max Dry High Flow Air Filter

Installation Details AR311-178 Installation instructions

California residents: click here

Customer Reviews

Airaid CAD Cold Air Intake System with SynthaMax Dry Filter - Stage 2 - Open - AR311-178

Average Customer Rating:  4.5 out of 5 stars   (2 Customer Reviews)

Powder coated steel heat shield blocks engine heat while the open design boosts air draw to increase horsepower and torque for your vehicle. Polyethylene intake tube and dry performance air filter included.

- AR451-181

Review from a similar CAD in Cold Air Intakes

No problems, install reasonably easy. I recommend etrailer to anyone that has such need. Cheers - Frank 445667

I’ve installed your products on 4 different vehicles over the years: 2 Honda Elements, VW TDI wagon, and a Ford Focus ST. They all work perfectly well and were easy to install, except wiring on the Ford Focus. It was an exception because there was no wiring built into the vehicle from the factory for a hitch. A bit more helpinstruction with running the long main power wire would have been helpful for routing and a better place to attach it other than the battery. The battery and firewall on this car are very difficult to deal with due to it’s placement and difficult access. Not your fault in that. Fortunately being an experienced home mechanic, I got it done, others would have found it a bit daunting.
Frank Y - 10/24/2018


- AR401-299

Review from a similar CAD in Cold Air Intakes

installed airaid on 2014 F-150, so far works well, noticeable increase in HP, nicer tone with flowmaster mufflers I had installed 251390


Ask the Experts about this Airaid Cold Air Intakes

  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality cold air intakes for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate cold air intake information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Written by:
David L
Updated by:
Brian B
Updated by:
Alex H

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.