My friend stripped the threads from the transmission drain pan on his 1993 BMW 525i. I actually think it’s a GM transmission. Nonetheless, what is the best easy repair? Can JB Weld for Aluminum be used? Can he just tap it to the next larger size? It only takes 9 ft/lbs of torque. I don’t think there is a lot of room to helicoil. Any suggestions would be most greatly appreciated.

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Steve
1985 Mercedes 500SL Euro (Gray market)
1995 BMW 520i Euro (Gray market)
1992 BMW 525it Wagon
1994 Honda Del Sol Si