APDTY 711212 4-Wheel Drive 4x4 4WD Front Differential Axle Actuator Plunger Solenoid (Standard Replacement On Trucks Manufactured After January 1996, Can Be Used As Upgrade From Thermal On 1988-1996 Models, See APDTY 711711 Wiring Harness For Conversion) Meets Or Exceeds OEM Specs Factory OEM Fit Form And Function