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Spark Plug for 2003 Infiniti M45

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Bosch Platinum+4 Spark Plug

Bosch Premium Class Platinum+4 Spark Plug contains the most platinum in the Bosch Platinum Plug Series and has a unique firing technology that combines the advantages of surface air gap technology and 4 yttrium enhanced ground electrodes.

Features:
  • Reduces the voltage necessary to jump the gap as well as quenching
  • Provides multiple radial spark paths and surface air gap design that creates optimal exposure of the air/fuel mixture to the enhanced ignition spark
  • Yttrium-enhancement of the ground electrodes further extend plug life
  • Designed to reach self cleaning temperature faster for quicker starts, smoother acceleration, and increased fuel efficiency
Bosch Spark Plug, Bosch Platinum+4, Direct Fit, Sold Individually
$14.33 List Price $16.91 Save $2.58 Availability: In Stock
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  • SKU#: BS4431
  • Electrode Core Material: Platinum
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 business days
  • Electrode Tip Material: Platinum
  • Reach: 26.5 mm
  • Thread Size: 14 mm
  • Warranty: 12-month or 12,000-mile Bosch limited warranty
see more Fits the following 2003 Infiniti M45 submodels:
  • 8 Cyl 4.5L | Base

NGK Laser Platinum Spark Plug

NGK Laser Platinum Spark Plugs are produced through laser welded platinum center electrode tip and platinum disc to backside of ground electrode, providing stable idle, superior anti-fouling, improved fuel efficiency and lower emissions to ensure longer service life.


Features:

  • Provides superior ignitability
  • Trivalent metal plating offers superior anti-corrosion and anti-seizing properties
  • OE spark plug available with an OE approved design
NGK Spark Plug, NGK Laser Platinum, Direct Fit, Sold Individually
$15.15 List Price $17.88 Save $2.73 Availability: In Stock
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  • SKU#: NG6240
  • Electrode Core Material: Copper
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 business days
  • Electrode Tip Material: Iridium/Platinum
  • Gap Size: 1.1 mm
  • Notes: Ships to U.S. addresses only. Cannot be shipped internationally.
  • Reach: 26.5 mm
  • Thread Size: 14 mm
  • Warranty: 60-day NGK limited warranty
see more Fits the following 2003 Infiniti M45 submodels:
  • 8 Cyl 4.5L | Base

NGK Iridium IX OE replacement Spark Plug

NGK Iridium IX OE Replacement Spark Plug

NGK Iridium IX Spark Plugs are engineered from iridium alloy material that has extremely high melting point, making it perfect for today's high-tech and high performance engines. These are manufactured to meet and even exceed OE part specifications that ensure precise fit and function with improved wear life.

Features:

Improves throttle response and superior anti fouling that deliver an outstanding acceleration, high fuel efficiency, and durability

Fine Iridium tip ensures high durability and consistent stable spark while their trivalent metal plating offers superior anti-corrosion and anti-seizing properties

NGK Spark Plug, NGK Iridium IX, Direct Fit, Sold Individually
$9.82 List Price $11.59 Save $1.77 Availability: In Stock
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  • SKU#: NG4469
  • Electrode Core Material: Copper
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 business days
  • Electrode Tip Material: Iridium
  • Gap Size: 1.1 mm
  • Notes: Ships to U.S. addresses only. Cannot be shipped internationally.
  • Reach: 26.5 mm
  • Thread Size: 14 mm
  • Warranty: 60-day NGK limited warranty
see more Fits the following 2003 Infiniti M45 submodels:
  • 8 Cyl 4.5L | Base
Rating: (see review/s)

"I will always recommend your service to everyone I talk about car part. You guys are excellent!Congratulations on such a successful business." posted by: Jorge C on February 21, 2014

Denso Iridium Long Life OE replacement Spark Plug

Denso Premium Class Extra Long Life Iridium Spark Plugs is fast becoming the standard for today's high-tech engines. Employing a revolutionary 360 degrees laser welding process, Denso has created a spark plug unlike anything on the market today. This particular spark plugs are designed for durability under the most extreme conditions, thanks to a patented Iridium alloy that is 6 times harder and 8 times stronger than conventional platinum and can handle temperatures in excess of 4,000 degrees Fahrenheit.


Features:

  • Platinum center electrode utilizes platinum to shrink the surface area of the center electrode tip for maximum firing performance and minimum voltage requirements
  • Platinum ground electrode resists gas and electrical erosion and corrosion extending service intervals to 60,000 miles,000 miles
Denso Spark Plug, Denso Iridium Long Life, Direct Fit, Sold Individually
$10.90 List Price $12.86 Save $1.96 Availability: In Stock
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  • SKU#: NPSK16HR11
  • Electrode Core Material: Iridium
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 business days
  • Electrode Tip Material: Platinum
  • Gap Size: 1.1 mm
  • Reach: 26.5 mm
  • Thread Size: 14 mm
  • Warranty: 12-month Denso limited warranty
see more Fits the following 2003 Infiniti M45 submodels:
  • 8 Cyl 4.5L | Base
Denso Spark Plug, Denso Iridium Long Life, Direct Fit, Sold Individually
$12.05 List Price $14.22 Save $2.17 Availability: In Stock
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  • SKU#: NP3417
  • Electrode Core Material: Iridium
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 business days
  • Electrode Tip Material: Platinum
  • Gap Size: 0.044 in.
  • Reach: 26.5 mm
  • Thread Size: 14 mm
  • Warranty: 12-month Denso limited warranty
see more Fits the following 2003 Infiniti M45 submodels:
  • 8 Cyl 4.5L | Base

Denso Standard OE replacement Spark Plug

Premium Class Iridium Spark Plugs by Denso are fast becoming the standard for today's high-tech engines. Employing a revolutionary 360 degrees laser welding process, Denso has created a spark plug unlike anything on the market today. The spark plugs are designed for durability under the most extreme conditions. Denso's patented Iridium alloy is 6 times harder and 8 times stronger than conventional platinum and can handle temperatures in excess of 4,000 degrees Fahrenheit.


Features:

  • Designed with heavy duty insulator that provides unparalleled dielectric strength and thermal conductivity under extreme temperatures
  • Five-rib design prevents flashover while decreasing voltage loss
  • Copper glass seal bonds the center electrode and insulator together for a gas-tight seal
  • Platinum center electrode utilizes platinum to shrink the surface area of the center electrode tip for maximum firing performance and minimum voltage requirements
  • Platinum ground electrode resists gas and electrical erosion and corrosion extending service intervals to 60,000 miles
Denso Spark Plug, Denso Standard, Direct Fit, Sold Individually
$5.36 List Price $6.32 Save $0.96 Availability: In Stock
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  • SKU#: NPK16HPRU11
  • Electrode Core Material: Copper
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 business days
  • Electrode Tip Material: Nickel alloy
  • Gap Size: 1.1 mm
  • Reach: 26.5 mm
  • Thread Size: 12 mm
  • Warranty: 12-month Denso limited warranty
see more Fits the following 2003 Infiniti M45 submodels:
  • 8 Cyl 4.5L | Base

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AC DELCO CONVENTIONAL OE REPLACEMENT SPARK PLUG
AC Delco Conventional Spark Plugs are precisely engineered and manufactured to provide everyday reliability and efficient performance, helping your engine run cleaner and longer.

Features: