NCV3 Sprinter OM651: Intercooler hose o-ring seal that is located on the left intercooler hose on the engine side.
E-Class OM642: Two of these seal are used. Located on both the left and right intercooler hoses at the intercooler side.
GL350 X166: Two of these seals are used. Located on both the left and right intercooler hoses at the intercooler side.