K&N's 57i induction kits are easy to install, economical, and come with K&N's No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K&N air filter with adapters for connection to the engine's throttle body.
K&N 57i Series induction kits are specifically designed for each different vehicle and will free your car from the size restriction that comes with the factory air box. These economical kits can take a variety of different forms based on vehicle characteristics and available space under the hood. Each kit is designed to provide power throughout the RPM range. The extra surface area of these open-air air filters provides even more airflow at lower restriction than a K&N O/E replacement filter which is limited to the size of the factory air box. The larger air filter also captures and holds more dirt increasing its service life before a cleaning is required (up to 100,000 miles). The filter is either directly attached to the engine carburetor or throttle body or indirectly through a tube assembly running from the filter to the engine. All adapters are made from high quality materials such as steel, aluminum, silicon or reinforced nylon to ensure long life. 57i Series Intakes are not legal for use in California and other US States adopting California emission standards.
K&N 57i Series induction kits are specifically designed for each different vehicle and will free your car from the size restriction that comes with the factory air box. These economical kits can take a variety of different forms based on vehicle characteristics and available space under the hood. Each kit is designed to provide power throughout the RPM range. The extra surface area of these open-air air filters provides even more airflow at lower restriction than a K&N O/E replacement filter which is limited to the size of the factory air box. The larger air filter also captures and holds more dirt increasing its service life before a cleaning is required (up to 100,000 miles). The filter is either directly attached to the engine carburetor or throttle body or indirectly through a tube assembly running from the filter to the engine. All adapters are made from high quality materials such as steel, aluminum, silicon or reinforced nylon to ensure long life. 57i Series Intakes are not legal for use in California and other US States adopting California emission standards.
- Designed to improve throttle response and engine sound
- Not legal for highway use in states adopting California emission regulations
- Washable and reusable lifetime air filter
- Lasts up to 100,000 miles before service is required (depending on driving conditions)
- Easy to install, usually in 90 minutes or less
- K&N No-Hassle Lifetime Limited Warranty
Application Summary:
| Year | Make/Model |
|---|---|
| 1987-1990 | BMW 325i |
| 1988-1991 | BMW 325iX |
| Attributes | |
| Air Box Included | No |
| Air Filter Color | Red |
| Air Filter Element Washable | Yes |
| Air Filter Height | 3.938 in. (100mm) |
| Air Filter Large End Diameter | 5.031 in. (128mm) |
| Air Filter Material | Cotton Gauze |
| Air Filter Oulet Length | 2.750 in. (70mm) |
| Air Filter Oulet Width | 2.750 in. (70mm) |
| Air Filter Outlet Length | 2.750 in. (70mm) |
| Air Filter Outlet Shape | Round |
| Air Filter Outlet Width | 2.750 in. (70mm) |
| Air Filter Washable | Yes |
| Alternate Part Number | 57-0070 |
| ASIN | B000JZHAFE |
| 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 | 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 |
| Harmonized Tariff Code (Schedule B) | 8421310000 |
| Hazardous Material Code | N |
| Intake Pipe Color | Black |
| Intake Pipe Color / Finish | Black |
| Intake Pipe Inlet Length | 2.705 in. (70mm) |
| Intake Pipe Inlet Shape | Round |
| Intake Pipe Inlet Width | 2.750 in. (70mm) |
| Intake Pipe Material | Flex Hose |
| Item Weight | 2.100 lbs. (0.9 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 | 7 in (178 mm), 7.000 in. (178mm) |
| Product Box Length | 7 in (178 mm), 7.000 in. (178mm) |
| Product Box Width | 7 in (178 mm), 7.000 in. (178mm) |
| Product Style | 57i Series International Kits |
| Replacement Filter | RU-5128 |
| SDR Required Flag | N |
| Standard Pack | 1 |
| 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 I |
| Warranty | No-Hassle Lifetime Limited |
| Weight | 2.1 lb (0.9 kg) |
| GTIN | 00024844038418 |