Audi A4 Cold Air Intake

K&N 57I SERIES GENERATION I PERFORMANCE INDUCTION KIT -- Street legal in most states but not legal in California; Provides additional power up to 30 h.p.; 96 to 99 percent filtration efficiency; Includes black intake tube and red air filter with adapter; High-flow intake kit; Features an intake tube made of specially formulated and heat resistant plastic; Its washable and reusable air filter is made of multiple interwoven layers of surgical cotton gauze infused or charged with oil for outstanding filtration and airflow; Designed to increase your vehicles' power and acceleration throughout the RPM range; Replaces your restrictive OE air filter and box; Works with OE computer system; Features an extra surface area that captures and holds more dirt; Can go up to 100,000 miles between cleanings depending on driving conditions; Provides an awesome intake sound; Engineered to specific vehicle design; Easy to install; With K&N's limited million mile warranty.

Fits the following 1996-2001 Audi A4 submodels:

• 1996-2001: Base; 6 Cyl 2.8L;
• 1998-1998: Avant; 6 Cyl 2.8L;

K&N 57I SERIES GENERATION I PERFORMANCE INDUCTION KIT -- 96%-99% Filtration Efficiency Rate, This Intake Kit Is Designed To Increase Your Vehicles Power And Acceleration Throughout The RPM Range, It Replaces Your Restrictive OE Air Filter And Box, Works With OE Computer System, Features An Extra Surface Area That Captures And Holds More Dirt, Comes With A Washable And Reusable Cone Air Filter With Adapters, With K&N's Limited Million Mile Warranty

Fits the following 2002-2004 Audi A4 submodels:

• 2002-2004: Base; 4 Cyl 1.8L;
• 2003-2004: Cabriolet; 4 Cyl 1.8L;

AEM COLD AIR INDUCTION SYSTEM -- 49-state legal; Legal in California only for racing vehicles which may never be used upon a highway; Up to 99.52 percent filtration efficiency; Includes silver intake tube, grey synthetic air filter, heat shield, and a complete mounting kit with comprehensive installation instructions for a perfect fit; Engineered to produce significant increases in power by strategically locating the air filter outside the engine compartment; Features no oil required Dryflow Synthetic Air Filter that is proven to be highly efficient in fine dust testing, filtering dirt as small as one micron; Its mandrel-bent inlet pipe is constructed out of light but durable T-6063 aluminum with reinforced TIG-welded brackets and fittings for maximum flow and added durability; Manufactured and assembled in the USA; Easy installation; Compatible with HID and non-HID models; Guaranteed for life of the vehicle by AEM.

Fits the following 2005-2008 Audi A4 submodels:

• 2005-2005: Base; 4 Cyl 1.8L; "GAS, FI, AMB, Turbocharged"
• 2005-2005: Base; 4 Cyl 1.8L; "GAS, FI, AMB, Turbocharged, VIN C"

• 2005-2005: Cabriolet; 4 Cyl 1.8L; "GAS, FI, AMB, Turbocharged, VIN C"

• 2005-2006: Base; 4 Cyl 2.0L; "GAS, FI, BPG, Turbocharged, VIN F"

• 2005-2006: Cabriolet; 4 Cyl 1.8L; "GAS, FI, AMB, Turbocharged"

• 2007-2008: Base; 4 Cyl 2.0L; "GAS, FI, BWT, Turbocharged, VIN F"

• 2007-2008: Cabriolet; 4 Cyl 2.0L; "GAS, FI, BWT, Turbocharged, VIN F"

Fits 5 more submodels. (Show all) Show less info

AFE STAGE 1 CLASSIC (Cx) COLD AIR INTAKE SYSTEM, PRO DRY S AIR FILTER -- Bold, Aggressive Performance In A Simple Package, Retains Stock Intake Tube, Includes A 360%XBA Radial Air Filter, Provides A Throaty Performance Sound, Easy Installation, Uses A Revolutionary Two-Ply Synthetic Air Filter With Oil Free Material That Is Functionally Superior To Traditional Paper Media And Single-Ply Synthetic, 99.4% Filtration Levels

Fits the following 2002-2005 Audi A4 submodels:

• 2002-2004: Base; 4 Cyl 1.8L; "GAS, FI, AMB, Turbocharged, VIN C"
• 2003-2005: Cabriolet; 4 Cyl 1.8L; "GAS, FI, AMB, Turbocharged"

• 2005-2005: Base; 4 Cyl 1.8L; "GAS, FI, AMB, Turbocharged"

Fits 1 more submodels. (Show all) Show less info

AFE MAGNUM FORCE STAGE 2 CX COLD AIR INTAKE SYSTEM -- Provides additional power up to 12 h.p. and 20 lb.-ft. of torque; Increases airflow up to 75 percent; 98.6 percent filtration efficiency; up to 550 CFM; Includes Pro 5R Air Filter with 3.75 in. flange I.D., 6 in. base, 5 in. tall dimensions and is made of 5 layers of progressively finer medical-grade cotton gauze; Comes with durable 16-gauge powder-coated steel heat shield that seals to the hood, molded intake tube with black OE look finish, and pre-positioned PEM-nuts for faster and easier installation; Delivers aggressive great performance sound even with cover; Features a premium quality construction with great seat-of-the-pants feel; Engineered to deliver maximum performance within stock engine configuration; Replaces both the stock air box and intake tract to turbo or throttle body; Its custom intake tube and larger, washable, and reusable conical filter accelerate and enhance airflow; No cutting or drilling required; It has pre-positioned opening for stock attachments to avoid dangling wires and relocating of hoses or tubes; With AFE's Limited 2-Year Warranty

Fits the following 2002-2005 Audi A4 submodels:

• 2002-2004: Base; 4 Cyl 1.8L; "GAS, FI, AMB, Turbocharged, VIN C"
• 2003-2005: Cabriolet; 4 Cyl 1.8L; "GAS, FI, AMB, Turbocharged"

• 2005-2005: Base; 4 Cyl 1.8L; "GAS, FI, AMB, Turbocharged"

Fits 1 more submodels. (Show all) Show less info