Hi, Duc750,
Dreibond, if still available in the USA from BMW dealers, is quite expensive. In lieu of Dreibond, I have used Hondabond, Yamabond and Permatex Ultra-gray. All have worked as intended. I have used them for the seal between cylinders and block on airhead BMW's and the spots necessary between valve cover and head on various K75's and K1100LT's. I hope this helps.