Stage 1 Cold Air Intake System with Pro DRY S Air Filter (51-10441) by aFe®. The Stage 1 Cold Air Intake System is a quick and inexpensive way to gain horsepower and improve performance. It replaces your factory air filter and airbox with an aFe Pro DRY S air filter and open element airbox/heat shield, dramatically increasing airflow to your engine. For a little bit of time and money you'll get a noticeable gain in low end torque and horsepower.
- 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 Pro DRY S air filter; it never needs oiling
- 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
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 an aFe Pro DRY S 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 DRY S filter combines high airflow and filtration efficiency with the convenience of oil-free maintenance. It contains 2 layers of randomly porous synthetic fabric, which allows approximately twice the airflow when compared to a typical stock air filter. The increased airflow results in more horsepower and torque, better throttle response and more miles per gallon. But this improved airflow and performance hasn't been gained at the expense of engine protection. The Pro DRY S has an excellent 99.2% filtration efficiency rating.
The pleats in the Pro DRY S 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.425.00Brand: aFe Part Number: 51-10441 UPC: 802959510452
aFe® (Advanced Flow Engineering, Inc.) manufactures performance products for late model cars, light trucks and SUVs. The company was founded in 1999 with an initial concentration on high performance air filters. Since then, the company product line has broadened to include cold air intakes, fluid filters, exhaust systems, intake manifolds, intercoolers, programmers, differential covers, transmission pans and throttle body spacers. The team of engineers, machinists, production and sales people at aFe® have many years of experience in their respective positions, and together work to ensure they produce the best automotive products on the market.
- Vehicle FitmentThis part is compatible with 9 vehicle(s)
Year Make Model Fitment Notes 2005 BMW 3-Series 323i / 323Ci / 323Xi /328i / 328Ci / 328Xi 2005 BMW X3 2.5L 2004 BMW 3-Series 323i / 323Ci / 323Xi /328i / 328Ci / 328Xi 2004 BMW X3 2.5L 2003 BMW 3-Series 323i / 323Ci / 323Xi /328i / 328Ci / 328Xi 2002 BMW 3-Series 323i / 323Ci / 323Xi /328i / 328Ci / 328Xi 2001 BMW 3-Series 323i / 323Ci / 323Xi /328i / 328Ci / 328Xi 2000 BMW 3-Series 1999 BMW 3-Series E46
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