ReplaceMyRemote 2004 2005 Mazda RX8 Keyless Entry Remote Control Car Key Fob Replacement for KPU41805 Model 41848 (One) Free DIY Programming Instructions Included Full Functioning Remote comes equipped with a new battery. Replaces FCC ID: KPU41805 Model# 41848, These Must Match 6 Month Replacement Warranty Included Please verify in the Description below that this is the correct remote for your vehicle.