Description: --Finned Black Aluminum Valve Cover Breather --Highly Black Heavy Large Billet Aluminum Breather, Nicest We Have Seen! --Measures: 4" Long X 2 1/4" Wide X 2" Tall --1" Tube For 1 1/4" Holes In Valve Covers Fits Chevy, Ford, Mopar Valve Cover With 1 1/4" Hole --These Are An Extremely Tight Fit Into Valve Covers, Use A Little Oil When Installing. Tight Fit Ensures The Breathers Will Not Turn Or Come Out When Engine Is Running. --Washable Filter Element Inside (Unscrew 2 Screws At Bottom Of Breather As Shown In