Direct replacement for your worn-out or non-working original alternator. This quality remanufactured alternator will install and function as original. Sold Outright - No Core required. Buick Regal applications: 1977 5.7L (350ci) V8 w/Double Mtg. Foot, HD opt. 1973-74 7.5L (455ci) V8 w/Double Mtg. Foot, HD opt. Firebird applications: 1971-74 250 HD option 1970-76 5 .7/350 with HD option 1969-76 6.6/400 with HD option 1971-76 7.5/455 with HD option Chevrolet / GMC Truck applications: 1980 80 amp L6 250, 292 with HD option 1977-80 80 amp V8 400 w/HD option-198 0 1978-80 80 amp V8 350 Diesel, w/HD-1980 1980 80 amp V8 305 w/HD option 1980 80 amp V8 350 w/HD option 1980 80 amp V8 350 w/HD option 1980-82 80 amp V8 454 w/HD option 1985 80 amp V8 454 w/HD op tion, exc. Calif Impala / Full Size applications: 1979 80 amp V8 305 w/hd opt 1979-82 80 amp V8 350 w/hd opt Note: Part numbers with a U suffix followed by a number re fers to a clock position of the terminal socket on the alternator case. Looking at the back of the alternator with the pivot ear at the bottom, or 6 o’clock position, note the clock position of the terminal socket on your original alternator, and match i t to the replacement. Diagnostic Tips: Here is a simple test you can perform to check your alternator. With your battery fully charged, start your vehicle.Turn on your lights and heater fan. Perform a voltage test from the positive to the negative battery post. The voltage reading should be between 13.0 and 15.3 volts.If less than 13.0 volts and your battery connections and alternator belt are good, chances are your alternator needs to be re placed. If the reading is above 15.3 volts, you probably have a bad voltage regulator (sold separately).
