1977-1979 Pontiac Catalina L6 4.1L 12si High Output Alternator Amperage:250 amp alternator 3L 1987 - 1995 GMC

3L 1987 - 1995 GMC Full Size Truck 5

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This is a direct fit high-output alternator for the 1987-1991 Ford Country Squire 5

3L 2003 - 2006 GMC Full Size Truck / Sierra 4

This is a direct fit high-output alternator for the 1976 GMC G15 6

1977-1979 Pontiac Catalina L6 4.1L 12si High Output Alternator Amperage:250 amp alternator 3L 1987 - 1995 GMCFitment: This is a direct fit high output alternator for the 1977 1979 Pontiac Catalina 4. 1L. 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