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K&N has been the world's leader in washable, reusable performance air filters since 1969. From the legendary cone filter to complete cold-air intake systems, K&N's cotton-gauze element delivers more airflow than paper while staying serviceable for the life of the vehicle.
The K&N RX-4990 XStream Top Universal Air Filter is engineered for enthusiasts seeking superior airflow and filtration for their performance vehicles. This filter utilizes K&N's innovative XStream design, which incorporates a secondary filter element within the filter's top. This significantly increases the total filter surface area, allowing for higher volumes of air to enter the engine while maintaining exceptional filtration efficiency. This makes it an ideal choice for demanding applications, including racing and high-performance street use.
Constructed with K&N's renowned quality, the RX-4990 is built to withstand the rigors of performance driving. Its washable and reusable nature offers an eco-friendly and cost-effective solution for maintaining optimal engine health and performance. Whether for a custom build or a performance upgrade, the K&N RX-4990 ensures your engine receives the clean, unrestricted airflow it needs to perform at its best. Get yours today at GGCRACING.
| Years | Make | Model | Trim |
|---|---|---|---|
| 2005 | Ford | Focus | ZX3 |
| 2005 | Ford | Focus | ZX4 |
| 2005 | Ford | Focus | ZX5 |
| 2005 | Ford | Focus | ZXW |
Other popular K&N Engineering products customers consider together:
K&N has been the world's leader in washable, reusable performance air filters since 1969. From the legendary cone filter to complete cold-air intake systems, K&N's cotton-gauze element delivers more airflow than paper while staying serviceable for the life of the vehicle.
The K&N RX-4990 XStream Top Universal Air Filter is engineered for enthusiasts seeking superior airflow and filtration for their performance vehicles. This filter utilizes K&N's innovative XStream design, which incorporates a secondary filter element within the filter's top. This significantly increases the total filter surface area, allowing for higher volumes of air to enter the engine while maintaining exceptional filtration efficiency. This makes it an ideal choice for demanding applications, including racing and high-performance street use.
Constructed with K&N's renowned quality, the RX-4990 is built to withstand the rigors of performance driving. Its washable and reusable nature offers an eco-friendly and cost-effective solution for maintaining optimal engine health and performance. Whether for a custom build or a performance upgrade, the K&N RX-4990 ensures your engine receives the clean, unrestricted airflow it needs to perform at its best. Get yours today at GGCRACING.
| Years | Make | Model | Trim |
|---|---|---|---|
| 2005 | Ford | Focus | ZX3 |
| 2005 | Ford | Focus | ZX4 |
| 2005 | Ford | Focus | ZX5 |
| 2005 | Ford | Focus | ZXW |
Other popular K&N Engineering products customers consider together: