Technical Oil Drain Bolt Allen Size?

[tfphoenix]

Hey guys, can anyone tell me what size allen this is for the drain bolt?

 

[Andy Monty]

if its anything like the few fiats i have tinkered with its 12mm

 

[digger58]

12 mm for sure.

 

[tfphoenix]

Thanks guys. Biggest I had in my set was 10

 

[sdlsaginaw]

You have a Harbor Freight near you. I got a set of socket-based ones there for cheap that includes the right size..

 

[tfphoenix]

There is a Harbor Freight nearby but now that I have the bolt off I will be replacing it with one that has a 3/8 drive square socket on it for a ratchet. My original threads are a bit stripped at the tip anyway and this bolt is the same size/pitch, plus it has a nice wide rubber coated metal washer so I don't think I will have leaky problems.

Its a Dorman/Motormite #65384

It fits a 1999 Dodge Ram 3500 5.9 Diesel by application.

Here is the new one/old one side by side.

 

[jimbro1000]

I think you'll find that the original plug has a conical thread on it while the replacement you've found has a square thread. It should all still work but don't be surprised if it still leaks - also make sure that it doesn't hit anything internally (again it shouldn't but it is still worth checking) I think the only thing that could interfere is the oil pickup.

 

[tfphoenix]

The new bolt was conical as well, just can't tell from the picture. It went on fine and it didn't bump anything so we're good