Motorite
Innovation Group
Bidvest
Many on the market, they all over the same in my opinion, some form of cap for specified components.
BMW also offers an extended warranty thee days, underwritten by BMW financial services.
Problem is is failure is due to wear and tear, or an unspecified or excluded component they wont pay.
E.g.: If a boost pipe crack leads to a turbo failure, and all pipes and hoses are excluded from the cover, they will not pay out.
No cover allows modification from what I know.