OE Fine Wire Platinum Spark Plug
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Bosch OE Fine Wire Platinum Spark Plug

Part No. 6725 Warranty Details  

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BOSCH OE Fine Wire Platinum: Bosch Platinum spark plugs deliver improved ignitability and fuel efficiency, and are an economical upgrade from conventional copper core spark plugs. Engineered to meet or exceed Original Equipment specifications for platinum.

Product Features:
  • OE Fine Wire design requires up to 24% less voltage to ignite
  • Pre-gapped and nickel plated threads allow for quick installation without adjusting the gap or applying anti-seize
  • Tapered ground electrode allows for better ignition throughout the life of the spark plug
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Center Electrode Core Material:Nickel-Yttrium and Copper and Platinum
Center Electrode Tip Material:Platinum
Ground Electrode Quantity:1
Hex Size:16
Insulator Material:Ceramic
Reach:19 mm
Seat Type:Flat


by PowerReviews
BoschOE Fine Wire Platinum Spark Plug

(based on 1 review)

Ratings Distribution

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  • 1 Stars



Reviewed by 1 customer

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(1 of 1 customers found this review helpful)


Slightly Improved Fuel Economy


from Summerville, SC

About Me Auto Enthusiast

Verified Buyer


  • Improves Engine Efficiency


    Best Uses

    • Everyday Driving
    • Performance Driving
    • Replacement

    Comments about Bosch OE Fine Wire Platinum Spark Plug:

    I used these to replace the original plugs in a low-mileage 2002 Jeep Grand Cherokee Overland, and didn't have to re-gap any of them out of the box. We then immediately took a short out-of-state vacation, and I was slightly amazed that my gas mileage improved by approximately 6% during prolonged interstate driving between 70 and 80 MPH (with some higher excursions as called for). I also noted slightly improved acceleration, but since I'd cleaned my K&N filter element, I'm unable to definitively attribute this to these new plugs.

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