Buy OEM 1988 Subaru Part # 61035VA001 (61035VA000). Latch and Actuator. LATCH&ACT Door RRH (Right, Rear). Door Lock Actuator Your Subaru may need a new door lock actuator if your keyless

LATCH & ACTUATOR ASSEMBLY-REAR,RIGHT GASKET-AIR INTAKE DUCT Door Latch Assembly

Fits STI, WRX

Door Lock Actuator
Your Subaru may need a new door lock actuator if your keyless entry doesn't work or your lock button doesn't lock the doors.