Mishimoto MMOFC-MUS1-RD Ford Mustang Oil Filler Cap, 1987-2001, Red Billet CNC-machined aluminum for optimal fit and finish Material: 6061 Aluminum / Overall Height: 1.35 / Overall OD: 2.32 / Thread Pitch: M32 x 3.5 Included O-ring ensures a perfect seal Fits most Ford Mustang engines from 19872001 Mishimoto Lifetime Warranty