Omix proudly offers all the parts you need to keep your WillysJeep running like new with quality standards that always meet or exceed those of the factory part. This replacement air cleaner horn fits 41 - 45 MB GPW, 46 - 49 CJ2A, 49 - 53CJ3A and 50 - 52 M38 models equipped with the 134 cubic in. L - head 4 cylinder engine. This air cleaner horn measures 2.25 - in. ID where it meets carburetor. For a complete air horn kit, use 17737.08. Replaces OE 641918