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NGK Iridium/Platinum Spark Plug Box of 4 (SILZKR7B11) - Black Ops Auto Works
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NGK Iridium/Platinum Spark Plug Box of 4 (SILZKR7B11)

NGK
NGK9723
87295197233
Spark Plugs
20+ Units In Stock - Ships Next Business Day
$ 138.24
$ 138.24

SKU: 9723   |   UPC: 87295197233


NGK Iridium Spark Plugs (SILZKR7B11) – Box of 4

The NGK Iridium Spark Plugs (SILZKR7B11) are a high-performance ignition upgrade designed for a wide range of vehicles. Each plug features a fine-wire iridium center electrode and a platinum pad or fine-wire ground electrode for superior spark performance, durability, and consistent combustion. The high-grade alumina ceramic insulator and 98% pure copper core provide excellent heat dissipation and resistance to fouling, while the trivalent metal plating offers superior corrosion and seizure resistance. Pre-gapped at approximately 0.044" (with minor adjustment recommended for some applications), these plugs deliver reliable starts, smoother idling, improved throttle response, and better fuel efficiency. Sold as a box of 4, they are an excellent OE-style replacement or performance upgrade for daily drivers and modified vehicles alike. Trusted by manufacturers and enthusiasts worldwide for over 80 years.

Key Features

  • Iridium Center Electrode – Fine-wire design for stronger, more focused spark and long life
  • Platinum Ground Electrode – Promotes even wear in distributorless ignition systems
  • High-Grade Alumina Ceramic Insulator – Excellent heat resistance and electrical insulation
  • 98% Pure Copper Core – Superior heat dissipation for reliable starts and performance
  • Trivalent Metal Plating – Corrosion and seizure resistance
  • Box of 4 – Complete set for many 4-cylinder applications
Spec Detail
Part Number 9723
Brand NGK
Type Iridium Spark Plugs (SILZKR7B11)
Quantity Box of 4
Gap (Pre-gapped) 0.044" (may require slight adjustment for specific vehicles)
Country of Origin Japan
Warranty NGK Limited Warranty

Whats Included

  • Box of 4 NGK Iridium Spark Plugs (SILZKR7B11)

Product Notes

  • Designed for a wide range of vehicles including Chrysler, Dodge, Hyundai, Jeep, Kia, Ram, Subaru, and Volkswagen models
  • Excellent choice for daily driving, performance, and modified engines
  • Gap adjustment may be required for certain applications (e.g., some Subaru models recommend 0.039"–0.043")
  • Professional installation recommended

Installation Notes

  • Replace spark plugs following factory service intervals or when tuning
  • Use anti-seize on threads and torque to manufacturer specifications
  • Estimated time: 30–90 minutes depending on vehicle

This Part Fits

Year Range Make Model Submodel / Notes
2011-2017 Chrysler 200 C, Limited, LX, S, Touring
2011-2020 Chrysler 300 Base, C, C Luxury, C Platinum, Limited, S, Touring, Touring L
2011-2016 Chrysler Town & Country Limited, Touring, S, LX, Limited Platinum, 30th Anniversary Edition
2011-2014 Dodge Avenger Express, Heat, Lux, Mainstreet, R/T, SE, SXT, SXT Plus
2017-2020 Dodge Challenger GT, Rallye Redline, SE, SXT, SXT Plus
2011-2020 Dodge Charger GT, Pursuit, SE, SXT, SXT Plus
2011-2015 Dodge Durango Citadel, Crew, Express, Heat, Limited, Rallye, Special Service, SXT
2011-2020 Dodge Grand Caravan American Value Package, C/V, Crew, Express, GT, Mainstreet, R/T, SE, SE Plus, SXT, SXT 30th Anniversary
2011-2019 Dodge Journey Crew, Crossroad, GT, Limited, Lux, Mainstreet, R/T, SE, SXT
2010-2017 Hyundai Azera Base, Limited
2012-2016 Hyundai Elantra GLS, Limited, SE, Sport, Value Edition, Coupe GS/SE
2013-2020 Hyundai Elantra GT Base
2010-2016 Hyundai Genesis Coupe 3.8, 3.8 Grand Touring, 3.8 R-Spec, 3.8 Track, 3.8 Ultimate
2010-2018 Hyundai Santa Fe GLS, Limited, SE, Limited Ultimate, SE Ultimate, XL Limited Ultimate, XL SE
2014-2020 Hyundai Tucson GLS, SE, SEL, SEL Plus, Value Edition
2014 Subaru Legacy 2.5i Sport
2011-2020 Jeep Cherokee 75th Anniversary, Altitude, High Altitude, Latitude, Limited, Overland, Sport, Trailhawk
2011-2015 Jeep Grand Cherokee Laredo, Limited, Overland, Overland Summit, Summit
2012-2018 Jeep Wrangler / Wrangler JK 75th Anniversary, Rubicon, Sahara, Sport, Sport S, Unlimited Rubicon, Unlimited Sahara, Unlimited Sport, Unlimited Sport S
2011-2018 Kia Cadenza Base, Limited, Premium
2014-2018 Kia Forte / Forte Koup / Forte5 EX, LX
2011-2018 Kia Sedona EX, L, Limited, LX, SX, SX Limited, SXL
2011-2018 Kia Sorento EX, Limited, LX, SX, SX Limited
2012-2019 Kia Soul !, +
2014-2018 Ram 1500 / 1500 Classic Big Horn, Express, HFE, Laramie, Lone Star, Outdoorsman, Rebel, SLT, Sport, Tradesman, Warlock
2012-2015 Ram C/V Base, Tradesman
2014-2020 Ram ProMaster 1500/2500/3500 Base
2011-2014 Volkswagen Routan S, SE, SEL, SEL Premium

Why Choose NGK Spark Plugs?

  • Leading OE supplier with over 80 years of expertise in spark plug technology
  • Superior iridium and platinum construction for long life and consistent performance
  • Trusted by manufacturers and enthusiasts for reliability and quality

Frequently Asked Questions

  • Q: Are these plugs pre-gapped?
    A: Yes, pre-gapped at approximately 0.044". Slight adjustment may be needed for certain applications (e.g., some Subaru models recommend 0.039"–0.043").
  • Q: How many plugs are included?
    A: This is a box of 4 spark plugs.
  • Q: Is professional installation recommended?
    A: Yes, proper gapping, torquing, and anti-seize application are important for optimal performance and engine safety.

Shipping & Handling

  • Method: Ground UPS or FedEx
  • Availability: In stock – ships same or next business day
  • Packaging: Secure NGK retail packaging

Request For Information

Have questions about NGK Iridium/Platinum Spark Plug Box of 4 (SILZKR7B11)? Fill out the form below and we'll get back to you by the next business day.
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