Hello chaps,
Please excuse my ignorance because when it comes to cars I know absolutely nothing, I am posting this because my granddad has a Triumph Herald 1200 and always comes to me when he needs to buy parts online and I am having a hard time figuring out what half of them are even called, let alone find them on ebay for a price my granddad approves. I took a picture and I would really appreciate it if someone could point me in the right direction. What is this thing: My granddad says it's a cap for the coolant system and the problem is that it's leaking so he needs a new one.
Thank you guys!
