Modern Vespa

I finally installed my Koso temp gauge on my P and found out that I ordered one that only goes up to 245°F. That's after I spent a few hours finding the perfect wire routing and mount placement. Is there a less expensive option that will work with the Koso probe and connector?

I see Koso has a cylinder head temperature gauge, but it's over $100.



I bought this a year ago, but I can't remember where I purchased it. So returning isn't an option.

I guess you got one for water. Try this (sorry about the url!)

https://www.aliexpress.com/item/1005009196514790.html?spm=a2g0n.productlist.0.0.69eb7378yeSdRJ&browser_id=46a14d270bc246afa0d9d8161c140acd&aff_trace_key=ea6efd53f98142dda75d8628a9b542c3-1749371055433-01552-UneMJZVf&aff_platform=msite&m_page_id=hsuhbjcmucacshcr19824c9511e817180ee1a27b14&gclid=&pdp_ext_f=%7B%22order%22%3A%22-1%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21AUD%2168.87%2130.99%21%21%21317.08%21142.68%21%402101effb17529638300284488e1418%2112000048264718739%21sea%21AU%210%21ABX&isseo=y&algo_pvid=286ec32f-59b0-4da6-a81b-979ba5d96e0c

The link doesn't work, but thank you for taking the time. Yes, I bought the water unit.

Sorry. Try this one? Should be just over $20US. Plus tariffs!

https://www.aliexpress.com/item/1005009196514790.html

I also bought a Koso CHT that sat in the box until recently, when I also learned it was for a water cooled engine.

The head end will not work with an air cooled CHT sensor. I know because I had one on hand and tried.

Do you think the threaded sensor that is included with the water cooled kit will work with the higher temp gauge?
I would rather use the sensor that took me a couple hours of installation to get it right

I doubt it since a high temp sensor didn't work with the new gauge. I will check to be sure. It may take me a few days to get to it, though, since there will be some effort required to wire things up.