OE Fine Wire Iridium Spark Plug
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Bosch OE Fine Wire Iridium Spark Plug

Part No. 9609 Warranty Details  

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Bosch OE Fine Wire Iridium. The only iridium spark plug line engineered for both High Performance and Long Life. The ultra fine wire design and laser welded, tapered ground electrode delivers the ultimate in High Performance. The laser welded iridium tipped center and ground electrodes (Double Iridium) provide exeptionally Long Life.

Product Features:
  • Double iridium- Iridium on the ground and center electrodes for longer life and increased performance
  • 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
  • 360 degree continuous laser welding increases durability for increased life
  • 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 Iridium
Center Electrode Tip Material:Iridium
Ground Electrode Quantity:1
Hex Size:16
Insulator Material:Ceramic
Reach:26.5 mm
Seat Type:Flat


by PowerReviews
BoschOE Fine Wire Iridium Spark Plug

(based on 3 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.

Reviewed by 3 customers

Displaying reviews 1-3

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from Weston Florida

Verified Buyer

Comments about Bosch OE Fine Wire Iridium Spark Plug:

Best spark plug

  • Was this a gift?:
  • No

Catching Fire


from Hobbs, NM

About Me Casual Driver, Mechanic

See all my reviews

Verified Buyer
3 or more reviews submitted


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


  • None

Best Uses

  • Everyday Driving
  • Replacement
  • Restoration

Comments about Bosch OE Fine Wire Iridium Spark Plug:

I used this product in my 2005 Nissan Murano. Easy to install in the front, the rear plugs took a little extra work. The improvement in performance was noticeable and worth it.

(4 of 5 customers found this review helpful)


This plug is the best of both world!


from Fairfield CT.

Comments about Bosch OE Fine Wire Iridium Spark Plug:

Before buying this spark plug I had a first thought of just replacing the original to the same brand, NGK double platinum on my Nissan Pathfinder LE 2003. But my mind was changed and decided, when I read about the new technology of Bosch iridium. After it was installed by our local mechanic I was anxious to make a road test. Finally, after doing so.. I would say that this spark plug make a difference to the engine performance in terms of fuel economy and power.It really pulls and my engine runs smoothly without hesitation. Secondly, this plug will last for more than 60,000 miles, before replacing. To me, this a two thumps up base upon my own experience and observation.

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