Voltage Regulator
Hover over the image to zoom in
Voltage Regulator Voltage Regulator
Share this:

BWD Voltage Regulator

Part No. R400P Warranty Details  

See if this part fits a specific vehicle.

Check Vehicle Fit

BWD voltage regulators are manufactured to meet or exceed OE performance.
Back To Top

REVIEW SNAPSHOT®

by PowerReviews
BWDVoltage Regulator
 
4.9

(based on 9 reviews)

Ratings Distribution

  • 5 Stars

     

    (8)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to use (8)
  • Lightweight (3)

Cons

    Best Uses

    • Trucks (6)
    • Large cars (4)
    • Small cars (4)
      • Reviewer Profile:
      • Auto enthusiast (4), Mechanic (3)
      • Was this a gift?:
      • No (8)

    Reviewed by 9 customers

    Sort by

    Displaying reviews 1-9

    Back to top

     
    5.0

    BWD voltage regulator

    By BJmayberry2

    from St Charles, MO

    About Me Auto Enthusiast

    Verified Buyer
    3 or more reviews submitted

    Pros

    • Easy To Use

    Cons

      Best Uses

      • Large Cars
      • Small Cars
      • Trucks

      Comments about BWD Voltage Regulator:

      Compact and easy to install.

      • Was this a gift?:
      • No

      Comment on this review(earn points)

      (3 of 6 customers found this review helpful)

       
      5.0

      Works Great

      By Biggie

      from Rocky Point NC

      About Me Auto Enthusiast

      Pros

      • Easy To Use

      Cons

        Best Uses

        • Trucks

        Comments about BWD Voltage Regulator:

        Works Great, Nice Price

        • Was this a gift?:
        • No

        Comment on this review(earn points)

        (2 of 6 customers found this review helpful)

         
        5.0

        worked well 1990 Merc Sable 3.0

        By Glenn's Sable

        from State College, PA

        About Me Casual Driver

        Verified Buyer
        Level 2

        Pros

        • Easy To Use

        Cons

          Best Uses

            Comments about BWD Voltage Regulator:

            Cleared up the problem. I had the original regulator from 1990 and was getting varying voltage and on / off charging.. seemed hesitant to start charging then kicked in at higher RPM's. The system was floating around about 12 to 14 volts varying with speed. My car now starts right up and shows immediate charging around 14 V and holds 1.5 to 13 running.. one day in so far

            • Was this a gift?:
            • No

            Comment on this review(earn points)

            (10 of 18 customers found this review helpful)

             
            5.0

            Just what the doctor ordered.......

            By Trailrider

            from Asheville, NC

            About Me Truck Enthusiast

            Verified Buyer
            Level 2

            Pros

            • Easy To Use
            • Exact fit
            • Lightweight

            Cons

              Best Uses

              • Large Truck

              Comments about BWD Voltage Regulator:

              The battery light on my 1990 F Super Duty was on. After having the alternator checked I replaced the voltage regulator, problem solved. Took all of about 10 mins to replace, 2 bolts, 1 plug.

              • Was this a gift?:
              • No

              Comment on this review(earn points)

              (19 of 36 customers found this review helpful)

               
              4.0

              decent regulator

              By Ttown guy

              from michigan

              About Me Mechanic

              Ask me a question

              Verified Buyer
              Level 3

              Pros

              • Easy To Use

              Cons

              • Flimsy

              Best Uses

              • Large Cars
              • Small Cars
              • Trucks

              Comments about BWD Voltage Regulator:

              a nice replacement for the ford unit that always craps out. seems a little chintzy and light compared to the stock one but time will tell how it holds up.

              • Was this a gift?:
              • No

              Comment on this review(earn points)

              (18 of 32 customers found this review helpful)

               
              5.0

              Exact fit and good performance

              By Ydnar

              from Green Bay, WI

              About Me Mechanic

              Verified Buyer
              Level 2

              Pros

              • Durable
              • Easy To Use
              • High-Performance

              Cons

                Best Uses

                • Trucks

                Comments about BWD Voltage Regulator:

                This regulator is used on a plow truck to maintain a 1350 amp battery and with solid state upgrade it charges consistanly. It takes alot of abuse and still works great. Exact mount and plugged right in!

                • Was this a gift?:
                • No

                Comment on this review(earn points)

                (13 of 28 customers found this review helpful)

                 
                5.0

                New replacement regulator

                By Minnesota Mike

                from Minneapolis, Minnesota

                About Me Auto Enthusiast

                Verified Buyer
                Level 3

                Pros

                • Easy To Use
                • Lightweight

                Cons

                  Best Uses

                  • Large Cars
                  • Small Cars
                  • Trucks

                  Comments about BWD Voltage Regulator:

                  Direct replacement voltage regulator. Fit perfectly, bolted into place and plugged in. Worked flawless.

                  • Was this a gift?:
                  • No

                  Comment on this review(earn points)

                  (19 of 32 customers found this review helpful)

                   
                  5.0

                  Alternator light staying on.

                  By StevO

                  from Aurora,Co

                  About Me Auto Enthusiast, Mechanic

                  Ask me a question

                  Verified Buyer
                  3 or more reviews submitted

                  Pros

                    Cons

                      Best Uses

                        Comments about BWD Voltage Regulator:

                        Even though my charging voltage was 13.8 volts,my alternator light would stay on.I replaced the voltage regulator,the light went off and my charging voltage is 14.2 volts!

                        • Was this a gift?:
                        • No

                        Comment on this review(earn points)

                        (18 of 36 customers found this review helpful)

                         
                        5.0

                        BWD VOLTAGE REGULATOR

                        By sbtaxpro

                        from near charlotte, nc

                        Verified Buyer
                        Level 3

                        Pros

                        • Durable
                        • Easy To Use
                        • High-Performance
                        • Lightweight
                        • Versatile

                        Cons

                          Best Uses

                          • Large Cars
                          • Small Cars
                          • Trucks

                          Comments about BWD Voltage Regulator:

                          I REPLACED THE OLD VOLTAGE REGULATOR WITH THIS ONE AND CHARGING SYSTEM WORKED FINE. TAKES ABOUT 5 MIN. TO CHANGE. HAVE DRIVEN THE TRUCK SEVERAL TIMES SINCE, STILL WORKING. ADVANCE DISCOUNTS AND LIFETIME WARRANTIES CAN'T BE BEAT!

                          • Car & Truck:
                          • Auto Enthusiast

                          Comment on this review(earn points)

                          Displaying reviews 1-9

                          Back to top

                          Do you have questions about this product?(earn points for answers!)

                           

                          Ask a question, get answers from real customers and in-house experts. Or contact Customer Care by email or call 1-877-238-2623.

                          11 Questions | 12 Answers
                          Displaying questions 1-10Previous | Next »
                          • Q:

                            where is volt regulator located on a 68 f-350 2/w dr? is it in the alternator
                            Asked on 9/1/2014 by gonebiking from sussex NJ

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Hi Gonebiking, For help with your project, I recommend purchasing a Haynes or Chilton repair manual specifically for your vehicle. This should be able to assist you further into detail on how to repair or replace specific parts.

                              Answered on 9/2/2014 by Steve from AAP
                          • Q:

                            on a 1988 ford bronco where is the voltage reg. located at ?
                            Asked on 11/13/2013 by John

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Hi John, great question! The voltage regulator on your Ford Bronco would be located inside the alternator.

                              Answered on 11/13/2013 by Vincent from AAP
                          • Q:

                            If a voltage regulator is bad on a vehicle, will it cause it to overcharge a battery, and cause the battery to explode?
                            Asked on 2/25/2013 by Kimmyco from Kentucky

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Symptoms of a bad voltage regulator: Dimming or Pulsing Lights :A damaged or failed voltage regulator can rapidly diminish the alternator's ability to cycle power from the battery. This may cause the vehicle to experience dimming or pulsating external systems, such as headlights and dashboard elements. In addition, the "check engine" or "battery" light may appear on the dashboard when the initial failure is detected by the vehicle's on-board computer. Dead Battery: A burned-out voltage regulator will diminish the vehicle battery's ability to charge or stop it altogether. You will quickly find the vehicle unable to start due to a dead battery. If the battery is recharged, the vehicle will start, although the faulty voltage regulator will only cause the battery to lose power rapidly. In this case, the vehicle should immediately be taken to a mechanic once the battery has been recharged or the car has been jump-started to have the voltage regulator replaced. Unpredictable Engine Performance: Some aftermarket voltage regulators have experienced problems working in factory-built systems. Engine stalling, sputtering and intermittent acceleration will occur when the vehicle's voltage regulator is unable to handle the power put out by the vehicle's stock (and faster-moving) alternator. This causes the regulator to burn out quickly because it was overworked. Have either a certified mechanic or someone with extensive knowledge of the vehicle being modified look at the aftermarket parts. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

                              Answered on 2/25/2013 by Steve from AAP
                          • Q:

                            ON A 1987 FORD F150 IT IS SQUEEKING AND THE VOLTAGE DOES NOT STAY HIGH AND THE LIGHTS ARE VERY DIM DO I NEED A BELT OR REGULATOR OR BOTH
                            Asked on 5/19/2012 by Anonymous

                            1 answer

                            • CUSTOMER CARE

                              A:

                              The voltage regulator should be the possible cause of the problem. However, I would suggest taking your vehicle to a certified mechanic for a proper diagnosis before buying and having parts installed that may not (solve/be) the problem.

                              Answered on 5/19/2012 by Vincent from AAP
                          • Q:

                            this vehicle is a late 1988/1989 model,do all parts interchange?
                            where is the voltage located?
                            Asked on 12/23/2011 by al from nashua,n.n.

                            1 answer

                            • CUSTOMER CARE

                              A:

                              For assisting you further on the location of voltage regulator on your vehicle, please provide the year, make, model and engine size of the vehicle.

                              Answered on 12/23/2011 by Vincent from AAP
                          • Q:

                            where is the voltage regulator located on a 1977 ford f150?
                            Asked on 11/3/2011 by junk box king from forked river, nj

                            1 answer

                            • CUSTOMER CARE

                              A:

                              The voltage regulator in your f150 should be a silver box 3 to 4 inches square with a wide flat plug either bolted to the firewall or one of the fenders.

                              Answered on 11/3/2011 by Vincent from AAP
                          • Q:

                            Where is the voltage regulator on a 1987 E250 it has a 5.0 ?
                            Asked on 8/25/2011 by Tommy from Manassas,Va.

                            1 answer

                            • CUSTOMER CARE

                              A:

                              It is located at the under hood, passenger side, front side of shock tower, mounted on fender well.

                              Answered on 8/26/2011 by Dennis from AAP
                          • Q:

                            the battery light is flashing off and on is this caused by the regulator going bad.
                            Asked on 7/11/2011 by Anonymous

                            1 answer

                            • CUSTOMER CARE

                              A:

                              It might be the problem. However, I would suggest taking your vehicle to a certified mechanic for a proper diagnosis before buying and having parts installed that may not (solve/be) the problem.

                              Answered on 7/13/2011 by Steve from AAP
                          • Q:

                            where is the voltage regulator located on a 1992 ford f150 5.0
                            Asked on 4/29/2011 by Anonymous

                            1 answer

                            • CUSTOMER CARE

                              A:

                              The voltage regulator inside the alternator housing.

                              Answered on 5/20/2011 by Just Ask Jacob! from AAP
                          • Q:

                            Once again, what is the amperage rating for this regulator?
                            Asked on 11/11/2010 by Anonymous

                            2 answers

                            • A:

                              14 volts

                              Answered on 12/6/2010 by buzzturk from SF
                            • CUSTOMER CARE

                              A:

                              Output current: 5 amps
                              Burst Output: 1.3 amps

                              Answered on 11/15/2010 by MIke the Auto Parts Master from AAP
                          Displaying questions 1-10Previous | Next »

                          Do you have a question about this product? 

                          Create or view your online garage

                          Check out the specials in our monthly flyer

                           
                           
                          Disclaimer We strive to keep all information accurate and up-to-date; however, product availability, pricing, promotions and store hours are subject to change without notice. Please contact Customer Care if you have any questions or corrections.