BMW 325i Performance Air Intake Kits

Easy to install one piece 16-gauge powder-coated heat shield requires no cutting or drilling. Stylish powder-coated steel or brushed aluminum cover blocks heat and directs cold air to the filter while quieting intake noise. The precision designed molded plastic intake tube maximizes airflow volume and speed for optimum power gains. 360 degree flow, washable and reusable, limited lifetime filters are high flow and high performance.

Product Features:

• Uses 360 deg. Radial Flow Air Filter
• 5 Layer Cotton Gauze Media
• Seamless Integration w/Stock Air Inlet
• Washable And Reusable

This Stage 2 Sealed Intake produces 12HP, 15LBS. x FT. of torque and outflows the factory intake by 56. This sealed air intake system features a washable/reusable 6 inch conical air filter with inverted top that improves airflow for increased horsepower, torque and throttle response. The air filter is constructed with 100 polyurethane for long life and multiple cleaning cycles. The sealed housing features two auxiliary air inlet ducts for increased airflow. To finish off your underhood appearance, an attractive vacuum formed ABS plastic cover with carbon fiber finish is used to provide easy access to the filter for servicing and an aggressive look. To complete this system, a dyno tuned molded plastic intake tube with velocity stack adapter replaces the stock intake tract and directs air flow with improved volumetric efficiency for maximum intake velocity

Product Features:

• Uses Pro 5R Air Filter For Maximum Air Flow
• Rotomolded Plastic Tube
• 56% cfm Flow Gain
• Improved Throttle Response

Maximum performance within minutes is what this aFe Stage 1 cold air intake system delivers. Enclosed in a durable 16 gauge heat shield; a massive washable/reusable; 360 deg. conical Pro 5R air filter increases airflow resulting in an additional 6 hp; and 7 lbs./ft/ torque. This intake system also features a unique 3-angle adaptor for increased air velocity. The Pro 5R air filter is constructed with 100 percent polyurethane for long life and multiple cleaning cycles. This intake is the easiest intake on the market to install. Simply remove the factory intake and mount the 3-angle adaptor with the air filter to the MAF sensor tube and you are breathing more air and producing more power.

Product Features:

• Uses Pro 5R Filter For Maximum Air Flow
• Rotomolded Plastic Tube
• 76% cfm Flow Gain
• Improved Throttle Response

Sealed, molded plastic or aluminum cover provides factory style with less intake noise than open systems. Our specially engineered air box openings pull cold air from outside the engine compartment increasing engine efficiency and producing greater performance gain. The cross-linked polypropylene rotomolded plastic air box replaces restrictive stock air box and ensures a consistent supply of cold fresh air; built-in ram scoop forces cold, outside air to filter. Precision designed molded plastic intake tube maximizes airflow volume and speed for optimum power gains. 360 degree flow, washable and reusable, limited lifetime filters are high flow and high performance.

Product Features:

• Uses Pro DRY S Air Filter For Maximum Convenience
• Rotomolded Plastic Tube For Maximum Air Flow
• 48% cfm Flow Gain
• Improved Throttle Response

A high-density polyethylene (HDPE) rotationally-molded tube helps increase the volume of airflow to your engine, and provides a guaranteed increase in horsepower and torque. These systems are paired with a washable, reusable High-Flow Air Filter featuring oiled cotton filter media. The oversized, conical design allows you to go up to 100,000 miles between filter services under normal highway driving conditions. A custom heat shield helps protect intake air from the high temperature of your engine bay, and the entire system can typically be installed in less than 60 minutes.

Product Features:

• Guaranteed to increase horsepower and torque
• Roto-molded HDPE intake tube paired with oversized oiled cotton air filter
• Engineered to provide high airflow and exceptional filtration
• Replaces factory air filter and intake tube
• Filter only requires cleaning every 100,000 miles under normal highway driving conditions
• Typical installation can be completed in 60 minutes or less with simple hand tools
• No-Hassle Lifetime Limited Warranty
• Will not void vehicle warranty(limited)

This air intake system produces up to +20 hp, 25 lbs. x ft. torque and out-flows the factory intake by 80%. Included in this system is a washable/reusable oiled conical air filter that uses five layers of progressive weave media for maximum air flow. The filter is constructed with 100% polyurethane for a long life and multiple cleaning cycles. This intake system also features a roto-molded tube that replaces the stock intake tract and directs increased air flow with improved volumetric efficiency for maximum performance. This intake system incorporates a unique coupling that smoothens the air transition into the intake tract, and also allows this kit to fit on both US and EURO Mass Air Flow Sensors. A one-piece black powder-coated heat shield requires little to no assembly for a hassle free installation.

Product Features:

• Out Produces Factory Intake By 80%
• Produces An Astonishing 20 HP And 25 ft./lbs. Torque
• Includes A Durable 18 Gauge; Powder coat Heat Shield
• CAD-Designed Roto-Molded Intake Tube

The aFe Stage 2 cold air intake system produces up to 10HP and 12lbs. x ft. torque while outflowing the factory intake by up to 20. This intake includes a highly engineered heatshielded housing with a one-piece intake tube. Handling filter duties is the five layered, progressively finer mesh cotton gauze, oiled Pro 5R washable/reusable, 360 degree inverted top radial flow air filter that provides maximum filtration and high flow. The polished aluminum intake tube is engineered for improved volumetric efficiency and maximum performance while lowering Intake Air Temps (I.A.T). Utilizing factory mounting points, this system provides a hassle free installation.

Product Features:

• Uses Pro DRY S Air Filter For Maximum Air Flow
• Rotomolded Plastic Tube
• 56% cfm Flow Gain
• Improved Throttle Response

K&N 57i Series induction kits are specifically designed for each different vehicle and will free your car from the size restriction that comes with the factory air box. These economical kits can take a variety of different forms based on vehicle characteristics and available space under the hood. Each kit is designed to provide power throughout the RPM range. The extra surface area of these open-air air filters provides even more airflow at lower restriction than a K&N O/E replacement filter which is limited to the size of the factory air box. The larger air filter also captures and holds more dirt increasing its service life before a cleaning is required (up to 100,000 miles). The filter is either directly attached to the engine carburetor or throttle body or indirectly through a tube assembly running from the filter to the engine. All adapters are made from high quality materials such as steel, aluminum, silicon or reinforced nylon to ensure long life. 57i Series Intakes are not legal for use in California and other US States adopting California emission standards.

Product Features:

• Guaranteed to increase horsepower
• Designed to improve throttle response and engine sound
• Replaces entire factory air intake system
• Not legal for highway use in states adopting California emission regulations
• Washable and reusable lifetime air filter
• Lasts up to 100,000 miles before service is required (depending on driving conditions)
• Easy to install, usually in 90 minutes or less
• K&N No-Hassle Lifetime Limited Warranty

A high-density polyethylene (HDPE) rotationally-molded tube helps increase the volume of airflow to your engine, and provides a guaranteed increase in horsepower and torque. These systems are paired with a washable, reusable High-Flow Air Filter featuring oiled cotton filter media. The oversized, conical design allows you to go up to 100,000 miles between filter services under normal highway driving conditions. A custom heat shield helps protect intake air from the high temperature of your engine bay, and the entire system can typically be installed in less than 60 minutes. Some intakes are not legal for sale or use on any pollution controlled motor vehicle in California. See the product specifications for CARB status on each part for a specific vehicle.

Product Features:

• Guaranteed to increase horsepower and torque
• Roto-molded HDPE intake tube paired with oversized oiled cotton air filter
• Engineered to provide high airflow and exceptional filtration
• Replaces factory air filter and intake tube
• Filter only requires cleaning every 100,000 miles under normal highway driving conditions
• Typical installation can be completed in 60 minutes or less with simple hand tools
• No-Hassle Lifetime Limited Warranty
• Will not void vehicle warranty(limited)