• You're one step from joining Yamaha YXZ Forum – Turbo Power, Suspension Mods & Track Performance.
    Create a free account to post, follow threads, and never miss an update.  Sign up free →

Need the right adapter for a 2020 YXZ

AvocadoToast

Member
Joined
Apr 14, 2025
Messages
17
City & State/Province
North Dakota
my neighbor got a 2020 YXZ. It's cool, but sadly, it got a tiny little coolant leak

it seems to be somewhere in front of the passenger compartment.

He said he never sees any puddles on the ground and never actually checks the leak, but he gotta top off the coolant every now and then.

I went for a ride in his YXV, and I could smell that coolant smell coming from the front.

He wanted to pressure check the system to find the leak and got one of those Stant pressure testers.

But the problem is, he can't find an adapter that fits the YXZ!

I tried to help by looking up the part number from the shop manual (90890-01352), but I had no luck.

So, does anyone know where to buy the right adapter for my neighbor's car?
 
my neighbor got a 2020 YXZ. It's cool, but sadly, it got a tiny little coolant leak

it seems to be somewhere in front of the passenger compartment.

He said he never sees any puddles on the ground and never actually checks the leak, but he gotta top off the coolant every now and then.

I went for a ride in his YXV, and I could smell that coolant smell coming from the front.

He wanted to pressure check the system to find the leak and got one of those Stant pressure testers.

But the problem is, he can't find an adapter that fits the YXZ!

I tried to help by looking up the part number from the shop manual (90890-01352), but I had no luck.

So, does anyone know where to buy the right adapter for my neighbor's car?
You can find it through specialized parts suppliers like CMSNL. Have you checked if the Stant kit includes a universal adapter?
 
Man, I feel for your neighbor, slow leak limbo is the worst, just enough to notice, never enough to scream, smelling coolant but seeing nothing… it's like watching something fade away without ever catching it in the act. I've searched for that adapter too, and yeah, it's like it doesn't want to be found, Idk its like yamaha makes things just custom enough to make you feel stuck. Maybe try a radiator cap test with universal cone adapters, but even that's a shot in the dark. Hope someone here's got the golden part number.
 
my neighbor got a 2020 YXZ. It's cool, but sadly, it got a tiny little coolant leak

it seems to be somewhere in front of the passenger compartment.

He said he never sees any puddles on the ground and never actually checks the leak, but he gotta top off the coolant every now and then.

I went for a ride in his YXV, and I could smell that coolant smell coming from the front.

He wanted to pressure check the system to find the leak and got one of those Stant pressure testers.

But the problem is, he can't find an adapter that fits the YXZ!

I tried to help by looking up the part number from the shop manual (90890-01352), but I had no luck.

So, does anyone know where to buy the right adapter for my neighbor's car?
Eh, that's quite common with the YXZ. It's probably steaming off somewhere else if he's topping off but there are no puddles? Could be a weep at the radiator or a loose hose clamp. For the adapter, I'm sure Motion Pro has it.
 
my neighbor got a 2020 YXZ. It's cool, but sadly, it got a tiny little coolant leak

it seems to be somewhere in front of the passenger compartment.

He said he never sees any puddles on the ground and never actually checks the leak, but he gotta top off the coolant every now and then.

I went for a ride in his YXV, and I could smell that coolant smell coming from the front.

He wanted to pressure check the system to find the leak and got one of those Stant pressure testers.

But the problem is, he can't find an adapter that fits the YXZ!

I tried to help by looking up the part number from the shop manual (90890-01352), but I had no luck.

So, does anyone know where to buy the right adapter for my neighbor's car?
Right adapter is available on any bike shop online but you might want to check FB marketplace if you're looking for something specific and at the same time tryna cut some costs. Those secondhand ones are still kicking, man.
 
Back
Top