Feature: It has a rubber sealing ring that keeps the engine oil and crankcase vapors in while keeping water and dirt out.Made of rubber and aluminum alloy strong and sturdy, for a long time use to avoid oil leakage.The product comes with a sealing ring, which can be directly installed.This is a non-OEM product, accessory only!Specification: Type: Oil Filler CapMaterial: Aluminum Alloy, Rubber Color: Purple, BlackSize: 31 x 59mm / 1.22" x 2.32"(H*D)Thread Size: M32 x 3.