Platinum+4 Spark Plug
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Bosch Platinum+4 Spark Plug

Part No. 4449 Warranty  

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The Bosch Platinum+4 spark plug features unique revolutionary firing technology that combines the advantages of surface air gap technology, 4 nickel-yttrium ground electrodes and a heat-fused center electrode with pure platinum to provide optimum engine performance, smoother acceleration and top fuel efficiency.

Product Features:
  • Revolutionary surface air gap firing technology, featuring multiple spark paths, delivers a powerful spark for ultimate engine performance
  • Offers smoother acceleration, top fuel economy and maximum engine power
  • 4 yttrium-enhanced ground electrodes provide optimum access to the air/fuel mixture for the most efficient combustion; yttrium alloy ground electrodes reduce gap wear and oxidation for extended performance life
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Electrode Core Material:Platinum
Electrode Tip Material:Platinum
Ground Strap Quantity:4
Insulator Type:Pyranit
Manufacturer Heat Range:9
Resistor:Yes
Shorty Spark Plug:No
Spark Plug Seat Type:Tapered
Tip Configuration:Surface
Type:HGR9BQP

REVIEW SNAPSHOT®

by PowerReviews
BoschPlatinum+4 Spark Plug
 
5.0

(based on 9 reviews)

Ratings Distribution

  • 5 Stars

     

    (9)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Improves engine efficiency (8)
  • Increases power (8)
  • Easy to install (6)
  • Durable (5)

Cons

    Best Uses

    • Everyday driving (8)
    • Replacement (7)
    • Performance driving (5)
    • Restoration (3)
      • Car & Truck:
      • Casual driver (5)

    Reviewed by 9 customers

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    Displaying reviews 1-9

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    (1 of 1 customers found this review helpful)

     
    5.0

    good stuff

    By johnny ford

    from bethlehem, pa

    About Me Auto Enthusiast, Casual Driver, Mechanic

    Verified Buyer
    Level 2

    Pros

    • Durable
    • Easy To Install
    • Improves Engine Efficiency
    • Increases Power
    • Lightweight

    Cons

      Best Uses

      • Everyday Driving
      • Performance Driving
      • Replacement
      • Restoration

      Comments about Bosch Platinum+4 Spark Plug:

      i put these plugs in my 94'f-150 4x4 flair side it uped the power and the fuel mileage on the H.O. 5.0L motor i would put these plugs in all my fords

      Comment on this review(earn points)

       
      5.0

      Easy

      By Purple People Eater

      from Katy, TX

      About Me Auto Enthusiast, Casual Driver, Truck Enthusiast

      Verified Buyer
      3 or more reviews submitted

      Pros

      • Durable
      • Easy To Install
      • Increases Power
      • Lightweight

      Cons

        Best Uses

        • Everyday Driving
        • Performance Driving
        • Racing
        • Replacement
        • Restoration

        Comments about Bosch Platinum+4 Spark Plug:

        Perfect!

        Comment on this review(earn points)

        (3 of 3 customers found this review helpful)

         
        5.0

        Perfect, Increased gas milage!!!

        By rnelson71

        from Topeka, KS.

        Verified Buyer
        Helpful Reviewer

        Pros

        • At least 3mpg difference
        • Improves Engine Efficiency

        Cons

        • No Cons

        Best Uses

        • Everyday Driving
        • Improve gas milage
        • Performance Driving

        Comments about Bosch Platinum+4 Spark Plug:

        These plugs were recommended for our 99 cadillac sts, also used them in our ford conversion van, what a difference!!!
        Really helped with gas mileage per gallon, as well as performance!!! Very impressed!

        • Car & Truck:
        • Casual Driver

        Comment on this review(earn points)

         
        5.0

        i would buy this product again

        By brettless

        from dacula, ga

        Verified Buyer
        3 or more reviews submitted

        Pros

        • Durable
        • Easy To Install
        • Improves Engine Efficiency
        • Increases Power

        Cons

          Best Uses

          • Everyday Driving
          • Performance Driving
          • Replacement

          Comments about Bosch Platinum+4 Spark Plug:

          it's my every day driver and seeing if it will help with fuel milage

          • Car & Truck:
          • Truck Enthusiast

          Comment on this review(earn points)

           
          5.0

          Works fine.

          By SC FredV

          from Oates, SC

          Verified Buyer
          Helpful Reviewer

          Pros

          • Easy To Install
          • Improves Engine Efficiency
          • Increases Power

          Cons

            Best Uses

            • Everyday Driving
            • Replacement

            Comments about Bosch Platinum+4 Spark Plug:

            I used them to replace the plugs in my wife's ice cream truck. The engine compartment gets very hot and I want to see how these plugs hold up under the conditions. So far the engine has a lot more power than it had before.

            Comment on this review(earn points)

             
            5.0

            platinum +4 bosch spark plug

            By Gramps

            from Scipio, indiana

            Verified Buyer

            Pros

            • Durable
            • Easy To Install
            • Improves Engine Efficiency
            • Increases Power
            • Made a big difference

            Cons

            • Non at this time

            Best Uses

            • Everyday Driving
            • Just cruiseing driving
            • Performance Driving
            • Racing
            • Replacement
            • Restoration

            Comments about Bosch Platinum+4 Spark Plug:

            just a good over allk value... For any type of car...

            • Car & Truck:
            • Auto Enthusiast, Casual Driver, Competitive Driver, Mechanic, Truck Enthusiast

            Comment on this review(earn points)

             
            5.0

            Platinum + 4 are great

            By GWG

            from OKC, OK

            Pros

            • Durable
            • Easy To Install
            • Improves Engine Efficiency
            • Increases Power

            Cons

              Best Uses

              • Everyday Driving
              • Replacement

              Comments about Bosch Platinum+4 Spark Plug:

              I put these in a 1987 GMC and noticed an immediate improvement, more power and easier starts, I even gained 2 miles more in a tank of gas. That was 100,000 miles ago. I just replaced them with a new set. The old ones could have gone much longer.

              • Car & Truck:
              • Casual Driver

              Comment on this review(earn points)

              (1 of 1 customers found this review helpful)

               
              5.0

              Platinum plugs

              By Joseph

              from HOUSTON TEXAS

              Verified Buyer

              Pros

              • Improves Engine Efficiency
              • Increases Power

              Cons

                Best Uses

                • Replacement

                Comments about Bosch Platinum+4 Spark Plug:

                I was looking to improve performance, I am now waiting until I use a couple of tanks of gas to determine the outcome, which looks promising.

                • Car & Truck:
                • Casual Driver

                Comment on this review(earn points)

                (4 of 4 customers found this review helpful)

                 
                5.0

                I'll only use these in my truck

                By Mark

                from Port Orchard, Washington

                Verified Buyer
                Helpful Reviewer

                Pros

                • Improves Engine Efficiency
                • Increases Power

                Cons

                  Best Uses

                  • Everyday Driving

                  Comments about Bosch Platinum+4 Spark Plug:

                  I installed these plugs in my truck [F250-460ci],a few years ago, and noticed an increase in both power and mileage when empty or towing my 8000# 5th wheel.

                  • Car & Truck:
                  • Casual Driver

                  Comment on this review(earn points)

                  Displaying reviews 1-9

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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.

                  6 Questions | 6 Answers
                  Displaying questions 1-6
                  • Q:

                    how good does it run in a 89 mustang
                    Asked on 6/12/2012 by Anonymous from lancaster, Pa

                    1 answer

                    • CUSTOMER CARE

                      A:

                      To help you in a better manner, if you could please include the year, make, model and engine specification of the vehicle and we would be better able to assist you.

                      Answered on 6/15/2012 by Aaron from AAP
                  • Q:

                    The product information says Do Not Gap; Gap is not adjustable. One of the answers here says that the plug must be gapped when installed. Which is correct?
                    Asked on 8/1/2011 by Dave from Arkansas

                    1 answer

                    • CUSTOMER CARE

                      A:

                      Electrode gap is factory set and never requires adjustment during installation.

                      Answered on 8/3/2011 by DIY Daniel from AAP
                  • Q:

                    whts the price?
                    Asked on 5/9/2011 by Anonymous

                    1 answer

                    • CUSTOMER CARE

                      A:

                      For further assistance please feel free to call 1-877-238-2623 and one of our representatives will gladly assist you with any questions or concerns you may have.

                      Answered on 5/17/2011 by DIY Daniel from AAP
                  • Q:

                    are they gauged already?
                    Asked on 4/27/2011 by Anonymous

                    1 answer

                    • CUSTOMER CARE

                      A:

                      No, you need to regap the plugs when installing them.

                      Answered on 5/12/2011 by Just Ask Jacob! from AAP
                  • Q:

                    I bought these plugs and wires 3 years ago when I first got my truck. I was wondering.. How long do you need to wait before changing your plugs again?
                    Asked on 2/1/2011 by Jello from Thornton, Colorado

                    1 answer

                    • CUSTOMER CARE

                      A:

                      Bosch recommends that you follow the replacement interval listed in your vehicle owner’s manual, however we highly recommend that you inspect your spark plugs annually and replace as required, to insure optimum engine performance.

                      Answered on 2/2/2011 by David the Dynamite Parts Guy from AAP
                  • Q:

                    how many come in a box
                    was wondering k thanks
                    Asked on 4/29/2010 by Anonymous

                    1 answer

                    • CUSTOMER CARE

                      A:

                      They come in a package of 1 per package. Type +4 is the model of the spark plug.

                      Answered on 4/29/2010 by Rose from AAP
                  Displaying questions 1-6

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