1989-97 CS144 Series 170 Amp OEM Alternator with Internal Regulator

This Powermaster alternator is manufactured from premium components and is designed to outlast and outperform an OEM alternator.

• 1993-97 5.7L LT-1

• 1995-97 5.7L LT-1

• 1991-93 7.4L optional
• 1993 optional
• 1995 optional

• 1989-90 140A 5.7L

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 n egative 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 replaced. If the reading is above 15.3 volts, you p robably have a bad voltage regulator (sold separately).