oil filter holder

[nmainehunter]

What are the thread sizes going into oil filter holder on a 95 softail. Thanks

[Burnout]

I think it's a 3/4 straight thread.

Easy to figure out by cross referencing the oil filter to a brand you can get a spec sheet for, and that sheet will give you the thread size and pitch.

[nmainehunter]

Thanks Burnout, I should have been more specific, I need the size of the ports for the feed and return lines.

[SP33DY]

1/8-27 NPT

[nmainehunter]

I was thinking that 1/4" pipe would be the ticket but it is loose in the thread, and it isn't tapered. To make matters worse the holes aren't the same diameter.

[JW113]

Those are crush sleeve fittings, not tapered pipe thread.

-JW

[xlfan]

I measure .673" outboard threads on the nut, I don't have a clue what that could be. The thread pitch is 20 (tpi).

[nmainehunter]

Thanks. .673, only Harley would come up with something like that. Probably the only one in the whole world  Anyway, I found some stock lines and fittings for cheap on eBay so I'll go that way.

[xlfan]

Maybe it is 11/16" - 20, drill size 41/64" which should be .640"

[SP33DY]

Maybe it is 11/16" - 20, drill size 41/64" which should be .640"

You're right! I just found one here and measured the threads on the nut.

Sorry about the earlier reply, had brain fog, was thinking about the oil pump fitting.

[nmainehunter]

I've found that a 3/8 pipe tap has the same thread. I ran it into the hole and was able to cut some solid threads. I was able to run a 3/8 x 3/8 connector in with a really solid fit.