BMW 323i Cold Air Intake

K&N 57 SERIES GENERATION II FIPK COLD AIR INTAKE SYSTEM -- 50-state legal, C.A.R.B. exempted with E.O. number D-269-31; Provides additional power up to 9.69 h.p. at 6090 RPM; 96 to 99 percent filtration efficiency; Includes black roto molded intake tube, red air filter, heat shield, and all the necessary hardware for installation; Fuel injection performance kit; Features high density polyethylene intake tube that is custom engineered and aerodynamically designed to drive air into your engine; 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; Comes with a heat shield that is custom designed to isolate and provide cooler air; Virtually eliminates intake tract restriction by replacing the air filter and the entire air path to the engine; Can go up to 100,000 miles between cleanings depending on driving conditions; Easy to install; With K&N's limited million mile warranty.

Fits the following 1999-2000 BMW 323i submodels:

• 1999-2000: Base; 6 Cyl 2.5L;

K&N 57I SERIES PERFORMANCE INDUCTION KIT, GENERATION II -- Built Primarily For European Vehicles, Uses Only Non-Metallic Rotationally Molded Tubes, Reduces Air Temperature And Decreases Intake Sound Over A Metal Tube, Engineered To Increase Power And Acceleration, Replaces The Restrictive Factory Air Filter And Air Intake Housing, Comes With A Washable And Reusable Cone Air Filter That Lasts Longer, Works With Original Equipment Manufacturer Computer System, Easy Installation, With Manufacturer's Limited Million Mile Warranty

Fits the following 1999-2000 BMW 323i submodels:

• 1999-2000: Base; 6 Cyl 2.5L;

K&N 57I SERIES PERFORMANCE INDUCTION KIT, GENERATION I -- Designed To Increase Power And Acceleration Throughout The RPM Range, Replaces OEM Filter And Air Box, Works With Original Equipment Manufacturer Computer System, Features An Extra Surface Area That Captures And Holds More Dirt, Has A Service Life Of 100,000 Miles, Comes With A Washable And Reusable Cone Air Filter With Adapters, Easy Installation, With Manufacturer's Limited Million Mile Warranty

Fits the following 1999-2000 BMW 323i submodels:

• 1999-2000: Base; 6 Cyl 2.5L;

AFE MAGNUM FORCE STAGE 1 CX COLD AIR INTAKE SYSTEM, BLACK OE LOOK FINISH -- 5.5 in. Flange I.D., 9 in. Base, 7 in. Tall, Replaces OE Air Filter With High Flow Performance 360 Degrees Radial Flow Air Filter, Improves Torque, Throttle Response, And Acceleration, Increases Airflow By Up To 50% And Performance By Up To 5 Hp, Delivers A Throaty Performance Sound, Trim Sealed Or Covered To Seal Out Hot Engine Air, Features Washable And Reusable Filter Comes With The Industry's Deepest Pleats For Greater Flow And Dust Holding Capacity, Pre-Positioned Opening For Stock Attachments To Avoid Dangling Wires And Relocating Hoses Or Tubes, Includes 3 Angle Billet Aluminum Adapter And Brushed Aluminum Cover That Seals To The Hood, Pre-Positioned PEM-Nuts For Faster And Easier Installation, No Cutting Or Drilling To The Engine Compartment Required, With AFE's Limited 2-Year Warranty

Fits the following 1999-2000 BMW 323i submodels:

• 1999-2000: Base; 6 Cyl 2.5L; "GAS, FI, M52"

AFE MAGNUM FORCE STAGE 2 COLD AIR INTAKE SYSTEM -- Provides additional power up to 43 h.p. and 33 lb.-ft. of torque; Increases air flow up to 80 percent; 98.6 percent filtration efficiency; Up to 550 CFM; Includes Pro 5R Air Filter that 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, larger 3-Series Euro MAF sensor provision, and pre-positioned PEM-nuts for faster and easier installation; MAF sensor and adaptor not included; Delivers aggressive great performance sound and increases fuel economy; Features a premium quality construction with great seat-of-the-pants feel; Engineered to deliver maximum performance within the stock engine configuration; Replaces the entire stock air box and retains the stock intake tube; Its larger, washable, and reusable lifetime filter with 360-degree radial free flowing conical design accelerates and enhances 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 1998-1999 BMW 323i submodels:

• 1998-1999: Base; 6 Cyl 2.5L; "GAS, FI, M52"

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 1999-2000 BMW 323i submodels:

• 1999-2000: Base; 6 Cyl 2.5L; "GAS, FI, M52"