OE/Specialty Spark Plug
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Bosch OE/Specialty Spark Plug

Part No. 7401 Warranty Details  

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OE Copper core spark plug has four ground electrodes and provides broader heat range to resist pre-ignition and fouling. The nickel-plated rolled threads is used for complete anti-seize and corrosion protection, and the angled, ribbed insulator design prevents misfire due to flash-over.

Product Features:
  • OE Copper spark plug with four ground electrodes
  • Copper core provides broader heat range to resist pre-ignition and fouling
  • Nickel-plated rolled threads is used for complete anti-seize and corrosion protection
  • Angled, ribbed insulator design prevents misfire due to flash-over
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Electrode Core Material:Nickel-Yttrium and Copper
Electrode Tip Material:Nickel-Yttrium
Ground Strap Quantity:4
Insulator Type:Pyranit
Manufacturer Heat Range:7
Shorty Spark Plug:No
Spark Plug Seat Type:Flat
Tip Configuration:Surface


by PowerReviews
BoschOE/Specialty 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)




from Orlando, FL

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3 or more reviews submitted


  • Durable
  • Easy To Install
  • Improves Engine Efficiency


  • No Improvement In Performance

Best Uses

  • Everyday Driving
  • Replacement

Comments about Bosch OE/Specialty Spark Plug:

Accurate description of product[...]

  • Car & Truck:
  • Auto Enthusiast, Casual Driver

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1 Question | 1 Answer
Displaying question 1
  • Q:

    How will/can I know when these new (no-gap) style spark plugs are worn out and need to be replaced?
    Asked on 5/9/2010 by Steve from Massachusetts

    1 answer



      With these plugs you still need to follow your manufacturer maintenance schedule.

      Answered on 5/10/2010 by Kevin from AAP
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