aFe® - Stage 1 Cold Air Intake System

142 reviews|Item # sp93767
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$323.00 - $451.00
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Features

  • Improves airflow to your engine
  • Isolates the air filter from engine heat, enabling it to take in cooler, denser air
  • Increases horsepower and torque, improves performance
  • Designed and tested for each specific application
  • Includes a conical high performance aFe air filter
  • Comes complete with everything required for installation, including comprehensive instructions
  • Can be installed in 30-60 minutes with simple hand tools; no drilling, cutting or fabrication required
  • Limited 2-year warranty
  • Proudly made in the USA

Product Details

Stage 1 Cold Air Intake System by aFe®. With two layers of progressively finer mesh synthetic media between 100% polyurethane top and base, this high flow, "oil-free" conical performance filter provides maximum convenience and easy maintenance with excellent airflow. Washable and reusable for multiple cleanings, the tall open evenly spaced pleats provide excellent dust holding capacity for longer service cycle between cleanings. Pliable polyurethane flange with integrated bumps insures tight, no leak seal over the life of the filter.

If you're on a budget or don't have a lot of time to work on your vehicle, don't think you have to forget about getting more performance or fuel mileage from your car or truck. The aFe Stage 1 Cold Air Intake System is inexpensive and can be installed in an hour or less with simple hand tools. This system replaces your factory air filter and airbox with your choice of aFe performance air filter and a one-piece open element airbox/heat shield that seals against the hood, isolating the filter from engine heat. The increased flow of cooler air to your engine will result in noticeable gains in power and performance. Cooler, denser air contains more oxygen, and more oxygen in your engine's air intake charge means better combustion, resulting in greater engine output.

The one-piece airbox/heat shield is made of rugged 16-gauge powder coated steel. It installs easily in place of the factory airbox; no cutting or drilling is required. The box/shield is attached with quality stainless steel hardware that is supplied with the kit. A specially developed 3-angle velocity stack smoothes the airflow transition from the air filter to the intake tube. Top quality, flexible rubber trim at the top of the box/shield seals against the hood when it is closed, shielding the air filter from engine heat and allowing it to take in cooler air. Some systems include a powder coated steel or brushed aluminum cover to further shield the filter.

The Pro GUARD 7 air filter delivers increased airflow while providing the highest level of filtration efficiency available – 99.7%. The patented 7-layer progressive cotton/synthetic media in the Pro GUARD 7 consists of 5 layers of progressively finer medical grade cotton gauze, combined with 2 layers of non-woven synthetic polyester fabric with random porosity.

Competitors use constant size mesh gauze in their filters, which creates voids/openings that can allow dirt to pass through. As the progressively finer layers of gauze are stacked in the Pro GUARD 7, the randomness of the openings increase, minimizing spaces with no filter media. Dust accumulates on multiple layers, increasing overall dust holding capacity and filtration efficiency.

The pleats in Pro GUARD 7 filters are evenly spaced for greater dust holding capacity and the tips are rounded for better airflow. They're also 30% deeper than comparable aftermarket air filters for longer service intervals and greater dust holding capacity. The sealing surface and supporting structures are made from 100% polyurethane, to withstand extreme engine temperatures.

The aFe Stage 1 Air Intake System comes complete with everything necessary for installation, including comprehensive instructions. It's backed by aFe's limited 2-year warranty and made in the USA.

Reviews

(142)
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/5
1-10 of 142 Reviews
5 of 5
Awesome Product
Fitment was great, easy to install with instructions provided. You will need an Allen key size 5 though.
Posted by Nathaniel (Oceanside, CA) / June 06, 20212003 BMW Z4
5 of 5
Absolutely Amazing
For starters, this product really does make the engine bay glow up and it looks very good once installed. Performance wise it does add a little bit of power that in my opinion is most noticeable in the 2,750-4,000 RPM rang and then 5,000+ RPM. My favorite thing about this is the sound that it makes when shifting between gears as well as when it is in the aforementioned RPM ranges. One thing I do recommend is when installing this you might as well go ahead and remove the entire throttle body/idle control valve and cleans those while you’re at it!
Posted by Abram (Rancho Santa Margarita, CA) / July 09, 20192003 BMW Z4
5 of 5
aFe Intake for 2003 BMW Z4 2.5i
It was a very easy install. Instructions were clear as well. I have to say it does give the car a deeper tone. Well worth it. As for performance, I added a shark tune to my car and it does make a difference. Only thing that is kind of a downer is that the intake is only a filter and shield which is a bit pricey I think. If it had the intake tubing as well that I'd say it would be worth the price. Hope this helps.
Posted by David (Madera, CA) / September 27, 20182003 BMW Z4
5 of 5
aFe Cold Air Intake
I order the air filter my car need and in just one day I got the shipment was awesome, this product is in perfect conditions and ease to assemble as well the installation, I'm really happy to find CARiD decently I recommend it.
Posted by Miguel (Irvine, CA) / February 28, 20172007 BMW Z4
5 of 5
Cool Cold Air Intake
I am very pleased with this product. Installation was a breeze, quality is supurbe, and the sound, when I stamp on it, is awesome. It sounds like a new engine.
Posted by Denis (Pincourt, QC) / August 24, 20122005 BMW Z4
5 of 5
Love It
This makes my 645 BMW move and it give it a nice throaty sound!
aFe® 51-11081 - Magnum Force® Stage 1 Aluminum Cold Air Intake System with Pro Dry S Gray Filter
Posted by Nestor (Farmingdale, NJ) / November 02, 20162004 BMW 6-Series
5 of 5
AFE Cold Air Intake System
I would like to say that the product is easy to install, as well as it looks great. The sound is cool too. Nice product, I would recommend to anyone that has an element.
Posted by Frank (Toronto, ON) / September 10, 20122006 Honda Element
5 of 5
AFE Momentum GT - Cold Air Intake
Service was top notch. Intake fits like a glove and its performance is unmatched. Shipping was super fast. Will do business again - 5 stars
Posted by Howard / August 01, 20252018 Chevy Camaro
5 of 5
Nice Look & Performance
Installed this on my Carrera S. I can say the throttle response is sharper and engine pulls harder in the mid range. Easy enough installation, took me about an hour. No check engine light post install.
Posted by Wes (Shreveport, LA) / January 24, 20252016 Porsche 911 Series
5 of 5
Good Upgrade for the 911
The power gain isn't crazy but you can feel it, especially at higher RPMs. Install was mostly easy, had to watch a couple Youtube vids to install. Carbon fiber looks pro.
Posted by Rashaun (Fayetteville, NC) / November 21, 20242013 Porsche 911 Series