Is your BMW's trunk or tailgate not locking or unlocking with the remote? The problem is often this little electric motor called the latch actuator. This HiSport part is a direct replacement that fits a HUGE range of BMWs from the 2000s and 2010s. We're talking 1 Series (128i, 135i), 3 Series (323i, 328i, 335i, M3), 5 Series (525i, 550i, M5), 6 Series, and the Z4. It replaces OEM part numbers 51247840617, 51248196401, and 937-866. The actuator is what physically moves the lock mechanism when you hit the key fob. Installation involves removing the interior trunk liner – a common DIY repair for BMW enthusiasts. Always double-check your specific model, year, and body style (Coupe, Sedan, Convertible) using the Amazon fitment tool or your VIN to be 100% sure.
