Standard Ignition Voltage Regulator P/N:VR-159
Standard Motor Products
Standard Ignition VR-571 voltage regulator for the 1992-1995 Volvo 940 4-cylinder 2.3L and other vehicles regulates the voltage the alternator sends to the electrical system. It is a 12-volt unit.
A failing regulator can show up as a battery light that stays on, headlights that dim or flicker, or a battery that keeps running down. These signs alone do not prove the regulator is at fault; a weak battery is another common cause.
It fits the 1992-1995 Volvo 940 4-cylinder 2.3L and the 1994 Volvo 960 6-cylinder 2.9L, and each takes one regulator.
Fit and size
Build and materials
One voltage regulator. Mounting hardware, a mounting bracket and instructions are not included, so plan on new hardware.
Interchange: R834 · VR1004 · VR308 · 9128982 · 91289820 · 91289827 · 91301101 · 91305185 · 9162995 · 91629950
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This part cross-references / interchanges with the following part numbers:
Is the Standard Ignition VR-571 voltage regulator right for the 1994 Volvo 960 6-cylinder 2.9L?
Yes. The Standard Ignition VR-571 voltage regulator fits the 1994 Volvo 960 6-cylinder 2.9L, and that car takes one.
Does this voltage regulator come with a mounting bracket or hardware?
No. The box holds the regulator only. The mounting bracket, hardware and instructions are not included.
Is the Standard Ignition VR-571 a 12-volt regulator?
Yes. The Standard Ignition VR-571 is a 12-volt regulator with two terminals, and it mounts on the alternator.
Which warning signs can point to a failing alternator voltage regulator?
A battery light that stays on, dim or flickering headlights, or a battery that keeps running down. A shop can test the charging system to find the cause.
Why is the PC board in this voltage regulator encapsulated in epoxy?
The epoxy-encapsulated PC board is meant to resist failure that vibration and corrosion of electrical connections may cause.
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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.