Voltage Regulator
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Voltage Regulator Voltage Regulator
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BWD Voltage Regulator

Part No. R400P Warranty  

See if this part fits a specific vehicle.

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BWD voltage regulators are manufactured to meet or exceed OE performance.
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REVIEW SNAPSHOT®

by PowerReviews
BWDVoltage Regulator
 
4.9

(based on 8 reviews)

Ratings Distribution

  • 5 Stars

     

    (7)

  • 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 (7)
  • Lightweight (3)

Cons

    Best Uses

    • Trucks (5)
    • Large cars (3)
    • Small cars (3)
      • Reviewer Profile:
      • Auto enthusiast (3), Mechanic (3)
      • Was this a gift?:
      • No (7)

    Reviewed by 8 customers

    Sort by

    Displaying reviews 1-8

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    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)

       
      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)

          (8 of 16 customers found this review helpful)

           
          5.0

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

          By Trailrider

          from Asheville, NC

          About Me Truck Enthusiast

          Verified Buyer
          Helpful Reviewer

          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)

            (15 of 28 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)

            (14 of 27 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 26 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)

                (15 of 28 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 32 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 1-8

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                        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.

                        10 Questions | 11 Answers
                        Displaying questions 1-10
                        • 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
                        • Q:

                          where is the voltage regulator on a 89 ford f250 v8 351
                          Asked on 6/12/2010 by Anonymous

                          1 answer

                          • CUSTOMER CARE

                            A:

                            Under hood, passenger side, front side of shock tower, mounted on fenderwell

                            Answered on 6/23/2010 by Mike from AAP
                        Displaying questions 1-10

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