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NGK (7164) TR55IX IX Iridium Spark Plug, Pack of 1

NGK Product Details - Ratings and reviews for ngk (7164) tr55ix ix iridium spark plug, pack of 1.
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Sales Rank: 4030
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Avg. Customer Review: 4 Star
Media: Automotive
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Product Features
NGK (7164) TR55IX IX Iridium Spark Plug, Pack of 1
  • NGK # 7164
  • Constructed from durable material
  • Fine Iridium tip ensures high durability
  • Features superior anti-corrosion and anti-seizing properties
  • Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines
Product Review
Product Description
SPARK PLUG
Product Details
NGK (7164) TR55IX IX Iridium Spark Plug, Pack of 1
  • Automotive: 0 pages
  • Publisher: NGK
  • Label: NGK
  • Studio: NGK
  • Average Customer Review: 4 Star based on 2 reviews
  • Sales Rank in Automotive: #4030
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Customer Reviews
Avg. Customer Review: 4 Star

Customer Rating: 5 Star
Summary: Improved gas mileage 2008-10-15
Comment: With delco OEM replacement plugs i was getting 17/23 (cty/hwy) MPG on my 2.4L grand am (and during the 140k miles I changed the plugs 3 times with OEM parts and same bad gas mileage each time.) With these plugs and a performance air filter I am getting 23/30! Oh the money I could of saved getting these 7 years ago!

Get them, you won't regret it!
Customer Rating: 3 Star
Summary: disapointing 2007-08-16
Comment: I thought I'd give these a try paired with the best spark plug wires on the planet, Magnecors....

Nope. Not a smooth idle. The other double platinum AC/NGK's I took out were missing 2 out of 6 of the platinum pads! And the idle is within 5 percent of where the other worn plugs were :(

For the price of these things, I'm not happy. Next I will try the cheaper Autolite XP's
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NGK - 7164 TR55IX IX Iridium Spark Plug, Pack of 1