2000 RX spark plugs

[semosouth]

Hello all....sorry I am new to this but I have a question. I bought a 2000 RX millenium edition ski last year. Bought new plugs from a dealer last year and changed them today getting it ready for the water. The old plugs are NGK BR8ES and the new one (sold to my wife from a local seadoo dealer) are ZFR4F-11. I have found online that the BR8ES plugs are for the RX and the ZFR4F-11 are for the RX DI. Now I wonder which ski I have? I don't see that mine has DI on it anywhere. What is the difference? Thanks for the help and sorry if this is a stupid question. Just don't want to mess up the ski with the wrong plugs.

 

[Fr0z3N]

DI stands for Direct injected so if yours doesn't have it on a big sticker anywhere on the ski chances are very high its not the DI version