water pressure gauge

[mrpontoon]

anyone know what type of fitting i will need to put a water pressure gauge on a 200 hpdi, motor is a 2003

[rodbolt17]

you need the one yamaha sells.
the block threads are metric.
either 10mmx1mm or 10mmX1.5mm I cant remember.
the fitting will screw into the port side top of the block.

[Capt. Lowtide]

I believe the nut and ferrule kit for the Yamaha water pressure tubing is part number 663-83668-00

I looked for the Yamaha fitting part number to install an aftermarket wp guage kit and finally gave up. The Yamaha wp gauge kit has everything you need.

[mrpontoon]

thanks i did call yamaha they told me the fitting will be a 14m by 1.5

[rodbolt17]

you called the wrong people.
but do as you wish.
the hex is 14mm NOT the thread.
but do as you wish.