K&N's easy to install air intake systems replace the restrictive factory air filter and air intake housing allowing for virtually unrestricted air flow. K&N air intakes come with K&N's No-Hassle Lifetime Limited Warranty.
K&N 57i Generation II Induction Kits are built primarily for European vehicles. They come with K&N's No-Hassle Lifetime Limited Warranty. These intake kits use only non-metallic rotationally molded tubes that can reduce air temperature and decrease intake sound over a metal tube. Restriction can exist BETWEEN an air filter and the engine reducing the benefit of a K&N Air Filter alone. The weakest link in the airflow chain robs a vehicle of its natural horsepower. Often that weak point is the factory air path leading to the engine. K&N Air Intake Kits virtually eliminate air path restriction by replacing the air filter and the entire air path to the engine. The aerodynamically engineered tube drives a massive amount of air into an engine, which translates into POWER.
- Guaranteed to increase horsepower
- Designed to improve throttle response and engine sound
- Replaces entire factory air intake system
- Washable and reusable lifetime air filter
- K&N No-Hassle Lifetime Limited Warranty
- Lasts up to 100,000 miles before service is required (depending on driving conditions)
- Easy to install, usually in 60 minutes or less
Application Summary:
| Year |
Make/Model |
| 2007-2009 |
Ford Focus |
| 2011 |
Ford Focus |
| Attributes |
| ASIN |
B000NK9FB2 |
| Air Box Included |
No |
| Air Filter Color |
Red |
| Air Filter Element Washable |
Yes |
| Air Filter Height |
6.344 in. (161mm) |
| Air Filter Material |
Cotton Gauze |
| Air Filter Oulet Length |
3.875 in. (98mm) |
| Air Filter Oulet Width |
3.875 in. (98mm) |
| Air Filter Outlet Length |
3.875 in. (98mm) |
| Air Filter Outlet Shape |
Round |
| Air Filter Outlet Width |
3.875 in. (98mm) |
| Air Filter Washable |
Yes |
| Alternate Part Number |
57I-2503 |
| California Proposition 65 |
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| California Restricted |
Not legal for sale or use in California |
| Clamp Color |
Natural |
| Clamp Color/Finish |
Natural |
| Clamp Material |
Stainless Steel |
| Clamp Quantity |
1 |
| Clamp Style |
Regular |
| Clamps Included |
1 |
| Country of Origin (Primary) |
US |
| Coupler Color |
Not Applicable |
| Coupler Color/Finish |
Not Applicable |
| Couplers Included |
None, No |
| Emission Code |
Not in CA |
| Filter Color |
Red |
| Filter Material |
Cotton Gauze |
| GTIN |
00024844183507 |
| Harmonized Tariff Code (Schedule B) |
8421310000 |
| Hazardous Material Code |
N |
| Intake Pipe Color |
Black |
| Intake Pipe Color / Finish |
Black |
| Intake Pipe Material |
High-Density Cross-Linked Polyethylene |
| Item Weight |
5.200 lbs. (2.3 kg) |
| Life Cycle Status Code |
Available to Order |
| Mass Air Flow Sensor Adapter Included |
No |
| Mass Air Flow Sensor Included |
Mass Air Flow Sensor Adapter Included When Required |
| Mounting Hardware Included |
Yes |
| NAFTA Preference Criterion Code |
B |
| Oil Included |
Yes, Filter Is Pre-Oiled |
| Package Material |
Paperboard |
| Package Type |
Box |
| Product Box Height |
12 in (305 mm), 12.000 in. (305mm) |
| Product Box Length |
22 in (559 mm), 22.000 in. (559mm) |
| Product Box Width |
14 in (356 mm), 14.000 in. (356mm) |
| Product Style |
57i Series International Kits |
| Replacement Filter |
RU-70031 |
| SDR Required Flag |
N |
| Street Legal |
No |
| Street Legal In All US States |
No, Not legal for sale or use in California on any pollution controlled motor vehicle. |
| TUV Approved (Europe) |
No, No |
| Type |
Gen II |
| Warranty |
No-Hassle Lifetime Limited |
| Weight |
5.2 lb (2.3 kg) |
