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: 1973-76 5.7L (350ci) V8 all 1973-74 7.5L (455ci) V8 w/Single Mtg. Foot Firebird applications: 1980 63A 3.8/231 with AC and rear defrost 1980-81 63A 4.3/265 al l 1980-81 63A 4.9/301 all 1980 63A 5.0/305-H with electric trunk release Chevrolet / GMC Truck applications: 1985-86 63 amp V6 292 std w/o air 1982 63 amp V8 379 Diesel, std and w/air 19 86 63 amp V8 454 w/37-42A Impala / Full Size applications: 1980-84 63 amp V6 229 std w/or w/o air Note: Part numbers with a U suffix followed by a number refers to a clock posi tion 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 it to the replaceme nt. 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 te st 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 yourbattery connections and alternator belt are good, chances are your alternator needs to be replaced. If the readin g is above 15.3 volts, you probably have a bad voltage regulator (sold separately).
