Sorry, this gauge reads in Fahrenheit only. If you would still like to purchase the gauge please call (800) 603-4383 and ask to speak to someone in our International department. They can give you a shipping quote to Ireland.

We can honor the price in the catalog if you call (800) 603-4383 and place the order with one of our sales representatives or if you have already placed the order you can call (800) 469-3894 and one of our customer service representatives can adjust the price as long as the item has not shipped or the order has been processed.

Currently we do offer a mirror with these features though as yous stated you would loose your onstar features, You could use a gauge such as this and a different style compass as well and have these separate from each other as well.

You would need to use a gauge pod or other custom installation for this item

2 1/16th inch es

This can be used for either varying on were you place the sensor

yes it will work for all vehicles, mounting the sensor is easy but mount it away from engine anything that cause wrong reading i installed it in the rear fender arch
i also purchased a single gauge pod zx284167 to install in the car