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NGK Iridium Spark Plug Box of 4 (SILKR8A-S)

Upgrade your vehicle's performance with the NGK Iridium Spark Plug Box of 4 (SILKR8A-S). Engineered with the latest technology, these spark plugs offer the best combination of performance and longevity.

  • Iridium tipped center electrode provides durability six times harder than platinum
  • High-grade pure alumina ceramic and 98% pure copper core prevents overheating and provides reliable starts
  • Raised platinum pad or platinum fine wire tip on the ground electrode for even wear and improved spark performance

Recommended for vehicles with OE SPE iridium alloy plugs, these spark plugs are designed to provide the optimal combination of performance and durability.

Make Model Year Type
Acura RDX 2007 Base
Acura RDX 2008 Base
Acura RDX 2009 Base
Acura RDX 2010 Base
Acura RDX 2010 SH-AWD
Acura RDX 2011 Base
Acura RDX 2011 SH-AWD
Acura RDX 2012 Base
Acura RDX 2012 SH-AWD
NGK manufactures spark plugs and spark plug wires, as well as glow plugs for diesel applications. Their range of spark plugs cover everything from OEM replacement to Ultimate Performance plugs, and are available as traditional copper, platinum, or iridium tips. NGK’s reputation as an OEM supplier for many car manufacturers makes them a top choice for spark plugs. Few brands can make that claim and have the quality to back it up.
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