Description

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.

  • Guaranteed to increase horsepower
  • Designed to improve torque and acceleration
  • Replaces entire factory air box and air filter system
  • Washable and reusable lifetime air filter
  • Easy to install, usually in 90 minutes or less
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • K&N Million Mile Limited Warranty

Specifications

  • Replacement Filter: E-9289
  • Air Filter Color: Red
  • Air Filter Material: Cotton Gauze
  • Air Filter Outlet Shape: Round
  • Clamps Included: No Clamps Included
  • Clamp Material: Stainless Steel
  • Clamp Style: Regular
  • Couplers Included: None
  • Type: Gen I
  • Product Style: 57i Series International Kits
  • Air Filter Height: 7.688 in (195 mm)
  • Street Legal In All US States: No
  • TUV Approved (Europe): See Vehicle Applications
  • TUV Certificate Number: TU-025979-C0-206
  • Weight: 4.2 lb (1.9 kg)
  • Product Box Height: 11.81 in (300 mm)
  • Product Box Length: 15.34 in (390 mm)
  • Product Box Width: 11.81 in (300 mm)
  • California Restricted: Not legal for sale or use in California
  • Mounting Hardware Included: Yes
  • Warranty: 1,000,000 Miles/10 Year

 

Compatibility

  • 2012-2018 Ford Focus III 1.0L L3 Petrol All Models
  • 2015-2018 Ford Focus III 1.5L L4 Diesel All Models
  • 2014-2018 Ford Focus III 1.5L L4 Petrol All Models
  • 2010-2018 Ford Focus III 1.6L L4 Petrol All Models
  • 2010-2014 Ford Focus III 1.6L L4 Diesel All Models
  • 2012-2018 Ford Focus III 2.0L L4 Petrol All Models
  • 2010-2017 Ford Focus III 2.0L L4 Diesel All Models
  • 2016-2018 Ford Focus III 2.3L L4 Petrol All Models
  • 2016-2018 Ford Focus RS 2.3L L4 Petrol All Models
  • 2014-2017 Ford Focus ST 2.0L L4 Diesel All Models
  • 2013-2018 Ford Focus ST 2.0L L4 Petrol All Models
  • 2012 Ford Focus 2.0L L4 Petrol All Models
  • 2009-2011 Ford Focus XR5 2.5L L5 Petrol All Models
  • 2009-2010 Ford Focus II 2.5L L5 Petrol RS
  • 2007-2010 Ford Focus II 1.4L L4 Petrol All Models
  • 2007-2010 Ford Focus II 1.6L L4 Petrol All Models
  • 2008-2010 Ford Focus II 1.6L L4 Diesel All Models
  • 2007-2010 Ford Focus II 1.8L L4 Petrol All Models
  • 2007-2008 Ford Focus II 1.8L L4 Diesel All Models
  • 2007-2010 Ford Focus II 2.0L L4 Petrol All Models
  • 2007-2009 Ford Focus II 2.0L L4 Diesel All Models
  • 2014-2018 Ford Transit Connect 1.0L L3 Petrol All Models
  • 2014-2018 Ford Transit Connect 1.5L L4 Diesel All Models
  • 2014-2015 Ford Transit Connect 1.6L L4 Petrol All Models
  • 2017 Ford Kuga 1.5L L4 Petrol All Models
  • 2013-2015 Ford Kuga 1.6L L4 Petrol All Models 
  • 2008-2013 Ford Kuga 2.0L L4 Diesel All Models
  • 2009-2013 Mazda 3 1.6L L4 Diesel All Models
  • 2013-2014 Volvo V40 Cross Country 1.6L L4 Petrol/Diesel All Models
  • 2012-2014 Volvo V40 II 1.6L L4 Petrol/Diesel All Models
  • 2007-2012 Volvo V50 1.6L L4 Petrol/Diesel All Models
  • 2007-2009 Volvo V50 1.8L L4 Petrol All Models
  • 2007-2012 Volvo V50 2.0L L4 Petrol/Diesel All Models
  • 2010-2014 Volvo V70 III 1.6L L4 Diesel All Models
  • 2007-2012 Volvo S40 II 1.6L L4 Petrol/Diesel All Models
  • 2007-2009 Volvo S40 II 1.8L L4 Petrol All Models
  • 2007-2012 Volvo S40 II 2.0L L4 Petrol/Diesel All Models
  • 2007-2013 Volvo C30 1.6L L4 Petrol/Diesel All Models
  • 2007-2009 Volvo C30 1.8L L4 Petrol All Models
  • 2007-2013 Volvo C30 2.0L L4 Petrol/Diesel All Models
  • 2008-2009 Volvo C70 II 2.0L L4 Diesel All Models

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.

  • Guaranteed to increase horsepower
  • Designed to improve torque and acceleration
  • Replaces entire factory air box and air filter system
  • Washable and reusable lifetime air filter
  • Easy to install, usually in 90 minutes or less
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • K&N Million Mile Limited Warranty
  • Replacement Filter: E-9289
  • Air Filter Color: Red
  • Air Filter Material: Cotton Gauze
  • Air Filter Outlet Shape: Round
  • Clamps Included: No Clamps Included
  • Clamp Material: Stainless Steel
  • Clamp Style: Regular
  • Couplers Included: None
  • Type: Gen I
  • Product Style: 57i Series International Kits
  • Air Filter Height: 7.688 in (195 mm)
  • Street Legal In All US States: No
  • TUV Approved (Europe): See Vehicle Applications
  • TUV Certificate Number: TU-025979-C0-206
  • Weight: 4.2 lb (1.9 kg)
  • Product Box Height: 11.81 in (300 mm)
  • Product Box Length: 15.34 in (390 mm)
  • Product Box Width: 11.81 in (300 mm)
  • California Restricted: Not legal for sale or use in California
  • Mounting Hardware Included: Yes
  • Warranty: 1,000,000 Miles/10 Year

 

  • 2012-2018 Ford Focus III 1.0L L3 Petrol All Models
  • 2015-2018 Ford Focus III 1.5L L4 Diesel All Models
  • 2014-2018 Ford Focus III 1.5L L4 Petrol All Models
  • 2010-2018 Ford Focus III 1.6L L4 Petrol All Models
  • 2010-2014 Ford Focus III 1.6L L4 Diesel All Models
  • 2012-2018 Ford Focus III 2.0L L4 Petrol All Models
  • 2010-2017 Ford Focus III 2.0L L4 Diesel All Models
  • 2016-2018 Ford Focus III 2.3L L4 Petrol All Models
  • 2016-2018 Ford Focus RS 2.3L L4 Petrol All Models
  • 2014-2017 Ford Focus ST 2.0L L4 Diesel All Models
  • 2013-2018 Ford Focus ST 2.0L L4 Petrol All Models
  • 2012 Ford Focus 2.0L L4 Petrol All Models
  • 2009-2011 Ford Focus XR5 2.5L L5 Petrol All Models
  • 2009-2010 Ford Focus II 2.5L L5 Petrol RS
  • 2007-2010 Ford Focus II 1.4L L4 Petrol All Models
  • 2007-2010 Ford Focus II 1.6L L4 Petrol All Models
  • 2008-2010 Ford Focus II 1.6L L4 Diesel All Models
  • 2007-2010 Ford Focus II 1.8L L4 Petrol All Models
  • 2007-2008 Ford Focus II 1.8L L4 Diesel All Models
  • 2007-2010 Ford Focus II 2.0L L4 Petrol All Models
  • 2007-2009 Ford Focus II 2.0L L4 Diesel All Models
  • 2014-2018 Ford Transit Connect 1.0L L3 Petrol All Models
  • 2014-2018 Ford Transit Connect 1.5L L4 Diesel All Models
  • 2014-2015 Ford Transit Connect 1.6L L4 Petrol All Models
  • 2017 Ford Kuga 1.5L L4 Petrol All Models
  • 2013-2015 Ford Kuga 1.6L L4 Petrol All Models 
  • 2008-2013 Ford Kuga 2.0L L4 Diesel All Models
  • 2009-2013 Mazda 3 1.6L L4 Diesel All Models
  • 2013-2014 Volvo V40 Cross Country 1.6L L4 Petrol/Diesel All Models
  • 2012-2014 Volvo V40 II 1.6L L4 Petrol/Diesel All Models
  • 2007-2012 Volvo V50 1.6L L4 Petrol/Diesel All Models
  • 2007-2009 Volvo V50 1.8L L4 Petrol All Models
  • 2007-2012 Volvo V50 2.0L L4 Petrol/Diesel All Models
  • 2010-2014 Volvo V70 III 1.6L L4 Diesel All Models
  • 2007-2012 Volvo S40 II 1.6L L4 Petrol/Diesel All Models
  • 2007-2009 Volvo S40 II 1.8L L4 Petrol All Models
  • 2007-2012 Volvo S40 II 2.0L L4 Petrol/Diesel All Models
  • 2007-2013 Volvo C30 1.6L L4 Petrol/Diesel All Models
  • 2007-2009 Volvo C30 1.8L L4 Petrol All Models
  • 2007-2013 Volvo C30 2.0L L4 Petrol/Diesel All Models
  • 2008-2009 Volvo C70 II 2.0L L4 Diesel All Models

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