K&N Replacement Air Filter for Evo 4-9 (33-2105) Spectra This groove works as a

This groove works as a channel on the lower part of the top land that equalizes pressure to the back of the top ring groove

• PRV Activation: 150 PSI

No additional adaptors

we can pack in more plates

K&N Replacement Air Filter for Evo 4-9 (33-2105) Spectra This groove works as aK&N drop in factory style replacement panel air filter for the Evo 4 5 6 7 8 9 models. Designed to install easily into your stock air box. K&N filters are washable, reusable and engineered to last for the entire lifespan of your vehicle. Vehicle Fitment: CN9A Evolution IV CP9A Evolution V VI CT9A Evolution VII VIII IX Includes: (1) Air Filter Replacement for these OEM Part Numbers: Mitsubishi MR552951, MR188657, MR373756, MR481795, MR481794 33 2105