New replacement MPEM-CDI module for SeaDoo. This unit is NOT compatable with ANY RFI models. This aftermarket unit does not require any kind of programming, allowing quick and easy installation. This MPEM does NOT require programming a dess key to it. It only uses the dess key for contact on the dess post to energize the starting circuit, so any key will start the ski. This part will not respond to dealer electronic diagnostics. No electronic data is provided when plugged in for dealer troubleshooting. Does not include a fuse box cover. This unit is compatable with Sea Doo OEM#s 278000916 278001496 278001796 This part will ONLY work on models and years listed below: Model Years GS 1997-2002 GTI 1997-2005 GTI LE 2002-2004 GTS 1997 & 2001 (model 5520/5521 with similar looking MPEM Does not work with RFI models