Hex key for the Oil filler plug

[Scottsmach03]

What size hex key do I need for the oil filler plug on top of the jet pump? 02 challenger 1800 210hp

 

[seadoosnipe]

Allen wrenches....

best answer I can give you is to go to the local Autozone and get a metric allen wrench set. There only a couple bucks and you'll likely need another size out of it one day.
To go through the manual to find that size is to time consuming. Maybe someone in here has just changed their oil and can give you an answer.

 

[Jim Dawson]

Allen wrench for oil fill

I recall it's an odd size metric that's not in the usual set. I believe it's a 4.5 mm and sets go from 4 to 5.