2004.5-2005 LLY Duramax injector. We offer brand new Genuine Bosch injectors and our in house remanufactured injectors. Both options carry a 2 year warranty. Our reman injectors are rebuilt with the highest quality parts in our clean room and tested with the best calibration equipment available on the market. $150.00 refundable core charge due. We email you a separate paypal invoice for the core charge that will be refunded upon the return of the old used core.