SX-M Drain Hole

[GMK35]

Can anyone confirm the SX-M drain plug hole size/pitch? Looking for a good gear lube pump that’ll fit it for gear oil changes, but am seeing a lot of competing statements on Amazon and other sites. They all say 3/8-16, but some say fits Volvo and others say specifically does not fit Penta SX. Also, if you have a good rec on a pump you use for this application, I’m all ears. Thanks!

 

[kenny nunez]

Just remove the dip stick and try a 3/8” 16 bolt. If it screws in easy then the drain will be the same.

 

[GMK35]

Only downside is I do that and then have to wait to finish the job/can’t use boat anymore until ordering the right thing. But, that is my backup plan if nobody knows the answer.

 

[Bondo]

Ayuh,..... Welcome Aboard,...... 3/8" 16 it is,.....

 

[GMK35]

Thank you!