Mishimoto MMOFC-MAZ-RD Mazda Oil Filler Cap, Red Billet CNC-machined aluminum for optimal fit and finish Material: 6061 Aluminum / Overall Height: 1.12 / Overall OD: 2.32 / Thread Pitch: M32 x 4 Included O-ring ensures a perfect seal Fits most Mazda engines Mishimoto Lifetime Warranty