K&N 57i Series Induction Kit (57S-4000)

K&N 57i Series Induction Kit (57S-4000)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

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.

Features:

• Guaranteed to increase horsepower and improve acceleration
• Custom designed and engineered for each application
• Works with OEM computer system
• Includes the world's best air filter, the K&N filter
• Easy to install
• Up to 100,000 miles between servicing
• Million Mile limited warranty

The 57S Performance Airbox gives you the best of both worlds: Increased airflow and performance with an OEM style airbox. With the filter enclosed in an airbox, induction noise is greatly reduced. The airbox also protects the filter, so there's no need to worry about driving in extremely wet or dusty conditions with an exposed filter. Yet you still get vastly improved airflow compared to your stock airbox. How do they do it?

K&N improves airflow by installing the largest conical shaped K&N filter that will fit in the airbox. The large increase in filter area over the stock air box filter results in a huge increase in airflow as well as a greater capacity to capture and hold dirt. The airbox also includes a custom engineered velocity stack that’s designed to smooth and straighten airflow for even more power.

The 57S Performance Airbox is injection molded for extra strength, consistency and durability. It's designed to use the factory mounting holes, so no additional hardware, cutting or drilling is required. The air box has a removable lid for easy access to the K&N air filter when cleaning is required.

K&N uses a dynamometer to design its air intake kits to make the most horsepower possible. But their power figures aren't based on just one vehicle, but rather an average of runs by a number of vehicles. This means repeatable numbers and horsepower claims you can count on.

Every 57S Performance Airbox comes complete with everything necessary for installation, including comprehensive installation instructions. The K&N filter can go up to 100,000 miles before cleaning is required. And the K&N air filter is guaranteed for one million miles.