Absolutely Nooooooooooooooo idea …Header is just for Marketing…I can give more dimension s if needed ..Bag looks like it says Triumph ..could be anything I’m pretty sure they are a valve inlet and they were in a pack of 4 (stainless)Do your own research.They may also be off a farm vehicle …Don’t know ..you pay your money you take your chance as they are being sold as not working ,OLD STOCK

On 15-Apr-24 at 10:32:41 BST, seller added the following information:

Found another which will now be included…in sale