Couples, within the context of drivetrain components (Drivetrain > Drivetrain Miscellaneous > Couples), are specifically designed connection pieces used to link rotating shafts in passenger cars and commercial vehicles. These parts facilitate the transmission of torque between engine, transmission, and axles, ensuring smooth and efficient power delivery. Typically found in propeller shafts or within the drivetrain itself, couples compensate for minor misalignments and dampen vibrations. They often feature splined or bolted connections for secure and reliable operation under load. Examples in this category include Febi MPN 177864, MAN MPN 81307156152, and various SACHS couplings like MPN 3400700467.