K&N 57S-4000 Performance Air Intake System

The K&N 57S-4000 57i Generation II Induction Kit uses a non-metallic rotationally molded tube to reduce air temperature for improved performance.
The K&N 57S-4000 Performance Airbox replaces the restrictive factory air filter and air box lid. K&N performance air boxes are designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The 57S-4000 Performance Airbox comes with an oversized conical K&N high-flow air filter and an injection molded air box lid with the K&N logo embossed on top. The air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions. This performance air box is relatively easy to install into the air box base with commonly available tools. K&N builds these air box systems to last for the life of your vehicle and they are backed by K&N's Million Mile Limited Warranty. Some K&N 57S Series Performance Airboxes are compliant with the latest TUV emissions and sound regulations. Check the K&N catalog or website for vehicle applications and specific TUV status for each vehicle and air intake.

K&N 57S-4000 Washable and Reusable Car Performance Intake Kit : : Automotive

The K&N 57-1140 cold air intake system replaces the factory air filter and air intake housing in many Can-Am Maverick models for a guaranteed increase in horsepower and torque. A high-density polyethylene (HDPE) rotationally-molded tube helps increase the volume of airflow to your engine.

K&N 57-1140 - 15-17 Can-Am Maverick Performance Intake Kit

K&N Cold Air Intake Kit: Increase Acceleration & Engine Growl, Guaranteed to Increase Horsepower up to 16HP: Compatible with 1.6L, L4, 2007-2018 FORD/VOLVO/MAZDA (C-Max, Focus, Grand, Transit)57S-4000 : Automotive

The KN 57-9011 FIPK air intake system replaces the restrictive factory air filter and air intake housing in some Lexus GS400 models. KN intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range.

Lexus GS400 Air Intake Kit | K&N 57-9011

K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The 57-3023-1 air intake comes with a chrome topped K&N high-flow air filter and a heat shield that installs into the previous air box space.

K N Air Intake 57-3023-1

FIPK; FORD F150 V8-5.0L F/I; 2018-2020

Cold Air Intake - High-flow, Roto-mold Tube - FORD F150 V8-5.0L

The K&N 57-3070 FIPK performance air intake system replaces the restrictive OEM air filter and air intake. K&N intakes are guaranteed to product more horsepower for your engine because they are designed to straighten and smooth the intake air flow. Utilizing a massive high-flow K&N air filter and a free-flowing, high density polyethylene tube, your engine inhales a larger amount of air than the factory air filter assembly.

K&N 57-3070 Performance Intake Kit

K&N Performance Air Intake Multiple Fitments (57S-4000) –

K&N 57S-4000 Performance Filter // Airbox Ford Focus XerroR

K&N Filters Air Intake System 57S-4000 - Reduced prices

The K&N 57S-4000 Performance Airbox replaces the restrictive factory air filter and air box lid. K&N performance air boxes are designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range.

K&N 57S-4000 Performance Intake Kit

K&N Performance Intake Kit 57-2557

K&N FIPK Cold Air Intake KNF-57-3108