Identifying fuel line thread size 2001 Accord

[Mark2001Accord]

Need help identifying thread size on the Fuel line going to the fuel rail. I have 2 sources telling me 2 different thread sizes. Both sound reasonable. I am just starting to replace all those lines underneath.

Like M14 x 1.5 or M12 x 1.25 ...
or 9/16th NPT...Not sure.

Its is hard to trust the parts guy, I tell them there is no fuel filter there. They instist the thread is to the filter housing. I say it is different.

 

[RedRyder]

Could it be in here?: https://www.6thgenaccord.com/forums/threads/complete-98-02-accord-service-manual.51614/

Maybe someone knows off the top of their head, if not you could grab part of the line off an Accord in the junkyard and then take it to Ace Hardware and find what fits.

 

[20accoedex01]

That be the best option

 

[Eclipse99fwb]

Other option is just pick up a thread gauge and measure it. They are like $6 at lowes.

Lol just realized this was from October, hopefully OP has figured it out. For future readers get a thread gauge.