Help keep your charging system's voltage in check with the Standard Ignition Voltage Regulator VR-111, which controls how much voltage the alternator sends to the battery and electrical system. It fits many vehicles, among them the 1988-1991 Chevrolet C1500 4.3L / 5.0L / 5.7L / 6.2L / 7.4L, the 1988-1991 Chevrolet K1500 4.3L / 5.0L / 5.7L / 6.2L and the 1975-1990 Jeep Cherokee 2.1L / 2.5L / 2.8L / 4.0L / 4.2L / 5.9L / 6.6L, and it is a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list of vehicles and engines.
A failing regulator can let charging voltage run too high or too low. Signs it may need replacing include dim or flickering lights, a battery that won't stay charged, a battery warning light, or bulbs that burn out early. A worn battery, a failing alternator or poor wiring connections can cause the same symptoms, so test the charging system before replacing parts. If the regulator is the cause, the VR-111 replaces it.
Is this a 1975-1990 Jeep Cherokee 2.1L / 2.5L / 2.8L / 4.0L / 4.2L / 5.9L / 6.6L voltage regulator?
The VR-111 is listed for the 1975-1990 Jeep Cherokee 2.1L / 2.5L / 2.8L / 4.0L / 4.2L / 5.9L / 6.6L, and coverage varies by engine and year. Check the Buyer's Guide tab to confirm your exact year and engine.
Does the VR-111 fit the 1988-1991 Chevrolet C1500 4.3L / 5.0L / 5.7L / 6.2L / 7.4L and 1988-1991 Chevrolet K1500 4.3L / 5.0L / 5.7L / 6.2L?
Yes. It is listed for both, with one regulator per vehicle. The Buyer's Guide tab shows each engine covered for your year.
What does a voltage regulator do?
It controls the alternator's output by regulating field current. This helps keep charging voltage in the range the battery and electrical system are designed for.
What are the signs a voltage regulator may need replacing?
Possible signs include dim or flickering lights, a battery that keeps going flat, a battery warning light, or bulbs burning out early. Test the battery, alternator and wiring first, since they can cause the same symptoms.
How many do I need, and how is it installed?
The listed applications use one regulator. Disconnect the battery negative cable before starting, and follow your vehicle's service information for the installation steps.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
