OEM Part #2481394 Replacement: Designed as a direct-fit solution to replace Caterpillar injector O-ring kit part number 2481394. Fits Caterpillar C15 and 3406E Engines: Compatible with CAT C15 and 3406E diesel engines used in heavy-duty trucks and industrial equipment. Injector O-Ring Kit: Seals the injector to the cylinder head to prevent fuel and oil leaks under high-pressure operation. Durable Rubber Construction: Built with high-quality rubber materials for reliable sealing, fuel resistance, and long-term durability. Complete 6-Set Kit: Includes 6 sets injector O-rings to service all injectors on a single engine—ideal for maintenance or overhaul. Seal to the Maximum Gaskets from Bear the Sealer are built to last. We would make sure the products you choose have the same quality as the OE manufactures or even better before handing out to you.