Mishimoto MMOFC-SUB-BK Subaru Oil Filler Cap, Black Billet CNC-machined aluminum for optimal fit and finish Material: 6061 Aluminum / Overall Height: 1.1 / Overall OD: 2.32 / Thread Pitch: M42 x 4.5 Included O-ring ensures a perfect seal Fits most Subaru engines Mishimoto Lifetime Warranty