Not allowed in the rules
There were incidents years ago with discarded tear offs endangering other riders
And there is no place on the course where you can take 1 hand off the bars and pull it off
I was very fortunate to attend the TT in 2017 with my dad - here is a pic of us at Joey Dunlop's memorial on mile marker 26 ... and my dad with some bikes coming past us - that is how close you stand to the road
Is the car insured ?
If yes lodge a claim and get your insurance to replace with a genuine OEM part - dont mess around with cheap pirate parts that may not fit properly and then leak oil on the mating surface to the engine block
There is a reson why the original part is so expensive - It may...