Product Detailes Description: MOTOROLA Auto Alternator Voltage Regulator M5-251 Specs for: MOTOROLA Systems Used on: Motorola / Prestolite 8SC Series Alternators Specs: 24 Volt, A-Circuit, 26.5 Vset Features: Ignition activated; Accommodates 5-amp rotor; Externally adjustable voltage set Replaces: Motorola / Prestolite 8RL3013, A; 105-251, -383, Unit #s: Motorola / Prestolite 8SC3017V, 8SC3018V, 8SC3021V, 8SC3022V, 8SC3110V; 110-306, -308, -568 Lester #s: 8630, 8631, 8632, 8633, 8634, 8635