1988-1989 GMC C1500 V8 5.0L High Output Alternator Amperage:320 amp alternator 315 introduces our 1/4 inch

315 introduces our 1/4 inch dual bass knob

some vehicles will require modifications for fitment

switch control allows you to go between the voltmeter or voltmeter and led so you can have control when you want your knob lit or dark for those drives at night

This is a direct fit high-output alternator for the 1987-1995 GMC G3500 4

This is a direct fit high-output alternator for the 1988-1989 GMC C1500 5

1988-1989 GMC C1500 V8 5.0L High Output Alternator Amperage:320 amp alternator 315 introduces our 1/4 inchFitment: This is a direct fit high output alternator for the 1988 1989 GMC C1500 5. 0L. Being a direct fit, this alternator fits directly into your stock alternator location. Plug: This high output alternator comes with a 14. 8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug and play and must be wired with the one wire connection. NOTE: If you require charging at a certain voltage setpoint, we offer a selection