This is a replacement foam air filter for the OFNA Ultimate GTP. FEATURES: Air filter is made of blue plastic with a white foam insert. INCLUDES: One filter housing Foam filter element 3x8 tapping screw Instruction Sheet REQUIRES: Air filter oil (recommended) Installation onto vehicle SPECS: Length: 1.5" Diameter: 1.5" COMMENTS: Contact OFNA for replacement filter sponges. 7-31-02rjm ir/kh