Welcome to 2CarPros.
Yes, you will need to get the o-rings specific to your vehicle. Otherwise, you could end up with a leak again. I will also tell you that if the vehicle was running fine (other than the leak) then chances are the original injector is fine.
If you go to a parts store, take the injector with you. They should be able to match one up for you.
Take care,
Joe
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Wednesday, August 21st, 2019 AT 7:04 PM