This window regulator replaces 2 different Volvo regulators with just one part #. Its appearance may differ slightly from that of the one that was originally installed on the car, but it is identical to the one currently offered by Volvo OE. The orientation and number of mounts may differ, and an additional mounting hole (or holes) may need to be located, uncovered, and/or drilled. Once installed, its performance should equal or exceed that of the original window regulator.