Description
K&N 57-1521 Air Intake
Product Description
The K&N 57-1521 Air Intake fits some Jeep Wrangler models. See vehicle applications below for details.
The K&N 57-1521 FIPK air intake system replaces the restrictive factory air filter and air intake housing in some Jeep Wrangler models. K&N intakes are designed to dramatically reduce intake restriction as they straighten air flow. This allows your Wrangler’s 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 57-1521 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. Air is directed through an aerodynamically engineered intake tube into the engine’s throttle body for a guaranteed power gain. The tube accommodates the factory EVAP canister vent line and a replacement silicon crank case vent hose. The oversized air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions. This air intake is relatively easy to install usually in 90 minutes or less using the existing factory mounting points and requires commonly available tools.
Product Features
- Guaranteed to increase horsepower.
- Designed to improve throttle response and engine sound.
- Replaces entire factory air intake system.
- Washable and reusable lifetime air filter.
- Stands for 50,000 miles before cleaning is required depending on driving conditions.
- Easy to install, usually in 90 minutes or less.
- Million Mile Limited Warranty®.
Product Specifications
| Estimated Horsepower Gain | 12.65 HP @ 4800 RPM |
| Air Filter Color | Red |
| Air Filter Height | 6.5 in (165 mm) |
| Air Filter Large End Diameter | 5.5 in (140 mm) |
| Air Filter Material | Cotton Gauze |
| Air Filter Outlet Shape | Round |
| Clamp Material | Stainless Steel |
| Clamp Style | Regular |
| Clamps Included | 4 |
| Couplers Included | 2 |
| Intake Pipe Color / Finish | Black |
| Intake Pipe Material | High-Density Polyethylene |
| Product Box Height | 12.5 in (318 mm) |
| Product Box Length | 22.25 in (565 mm) |
| Product Box Width | 14.25 in (362 mm) |
| Product Style | 57 Series FIPK |
| Replacement Filter | RC-4630 |
| Type | Gen II |
| Weight | 11.7 lb (5.3 kg) |
Horsepower gains based on similar vehicle dynamometer test. Results will vary.
This Part Fits these Vehicles
| Make | Model | Years | Notes & Specs |
| BMW | 1 series | 2008-2011 | 125I, 128I, 130I, 135I |
| BMW | 1 series | 2011-2015 | 128I, 135I, 135IS |
| BMW | 2 series | 2014-2016 | 228I, 228I XDRIVE |
| BMW | 3 series | 2006-2011 | 323I, 325I | CI | XI, 328I | XDRIVE | XI, 330I | CI | XI, 335I | IS | XDRIVE | XI |
| BMW | 3 series | 2007-2012 | 320I, 323I, 325I, 328I | XDRIVE | XI, 335I | IS | XDRIVE | XI |
| BMW | 3 series | 2011-2017 | 320I | GT | XDRIVE, 328I | GT | XDRIVE, 335I | GT | IS | XDRIVE |
| BMW | 4 series | 2013-2016 | 428I |GRAN COUPE | XDRIVE, 435I | GRAN COUPE | XDRIVE |
| BMW | 5 series | 2004-2010 | 525I | XI, 528I | XDRIVE | XI, 530I | XI, 535I | GT | XDRIVE | XI |
| BMW | 5 series | 2010-2016 | 528I | XDRIVE, 535I | GT | XDRIVE |
| BMW | 6 series | 2012-2017 | 640I | GRAN COUPE | XDRIVE |
| BMW | 7 series | 2011-2015 | 740I, 740LI | XDRIVE |
| BMW | X1 | 2012-2015 | 2.0L L4 F/I - All, 3.0L L6 F/I - All, 20I | SDRIVE, 28I | XDRIVE, 35I | XDRIVE |
| BMW | X3 | 2004-2010 | SI, 3.0L L6 F/I - All |
| BMW | X3 | 2010-2017 | 2.0L L4 F/I | DSL - All, 20I | SDRIVE | XDRIVE, 3.0L L6 F/I - All | Turbo, 28I XDRIVE, 35I | XDRIVE |
| BMW | X4 | 2015-2017 | 2.0L L4 F/I - All, 3.0L L6 F/I - All INCL. DSL |
| BMW | X5 | 2007-2017 | 2.0L L4 F/I - All, 3.0L L6 F/I - All INCL. XDRIVE35I |
| BMW | X6 | 2008-2017 | 3.0L L6 F/I - All |
| BMW | M1 | 2011-2012 | 3.0L L6 F/I - All |
| BMW | M235I | 2014-2016 | 3.0L L6 F/I - All INCL. XDRIVE |
| BMW | M3 | 2015-2017 | 3.0L L6 F/I - All |
| BMW | M4 | 2015-2017 | 3.0L L6 F/I - All |
| BMW | Z4 | 2006-2016 | 2.0L L4 F/I - All INCL. SDRIVE 18I | 20I | 28I, 3.0L L6 F/I - All INCL. SDRIVE 35I |
