G5200 (D600) drain cock valve thread pitch

dlundblad

Member

Equipment
G5200, L2501, ZD1211
May 16, 2009
503
10
18
IN
I didn't find a thing online about this so I figured it was worth posting up in more detail. Mine ended up snapping off from the block when I tried removing it during a coolant change.. So lesson learned, use a drill bit, long pick etc. before resorting to removal.

P/n is 15841-73020. About $9 for the Kubota part.
Thread pitch is 1/4"-18 NPT.

This should apply to any G3200 to the G6200 as well as the next generation G1800, 1900 etc. Hope this helps someone.
 

Steve Corgan

New member

Equipment
G5200
Jun 27, 2020
13
0
1
Wildwood, Mo. U.S.A.
I wish I would have seen your post before breaking my drain cock off while attempting to remove it. I have the new part now, but I'm confused about the thread size. I want to have the tap on hand before trying to get the piece out of the block. I saw a post on here somewhere that said the thread is 1/4" x 18 BSPT and not NPT. I'd never heard of British Standard Pipe Thread before. Now, I can't find that post so I'm unsure. Can you clear up my confusion? Will the NPT tap work? Thanks, Steve