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Spark Plug for 2005 Mercury Grand Marquis

We have 28 Items In-stock. Select your vehicle's Submodel to continue.

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
$11.25 List Price $18.87 Save $7.62 Availability: In Stock
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  • SKU#: NG7164
  • Plug Type: Resistor
  • Electrode Core Material: Copper
  • Anticipated Ship Out Time: 1-2 Business Days
  • Electrode Tip Material: Iridium
  • Gap Size: 1.5 mm
  • Notes: Ships to U.S. addresses only. Cannot be shipped internationally.
  • Reach: 17.55 mm
  • Thread Size: 14 mm
  • Warranty: 60-day NGK limited warranty
see more Fits the following 2005 Mercury Grand Marquis submodels:
  • 8 Cyl 4.6L | GS, LS, GSL, Limited Edition, Ultimate Edition
Rating: (see review/s)

"This is a high quality spark plug. Immediately improved sluggish performance." posted by: on March 29, 2009

"excellent plugs wouldnt go without them. great power boost for the buck, and they last a very long time, which is important when working on a trans am because it is so difficult to get to tune up parts on the engine for replacement." posted by: turbo on March 6, 2009

NGK Spark Plug

NGK V-Power Spark Plugs come with unique V-power design that directs spark to the edge of the electrode where it develops more rapidly to improve ignitability unlike other OE products.


Features:

  • Increase ignitability even in lean burn conditions and lower ignition system voltage requirements
  • Increase fuel economy and lower emissions
  • Trivalent metal plating has superior anti-corrosion and anti-seizing properties
  • Highly durable against electrical and chemical wear
NGK Spark Plug, NGK V-Power, Direct Fit, Sold Individually
$5.38 List Price $6.35 Save $0.97 Availability: In Stock
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  • SKU#: NG3951
  • Plug Type: Resistor
  • Electrode Core Material: Copper
  • Anticipated Ship Out Time: 1-2 Business Days
  • Electrode Tip Material: Nickel alloy
  • Gap Size: 1.5 mm
  • Notes: Ships to U.S. addresses only. Cannot be shipped internationally.
  • Reach: 17.55 mm
  • Thread Size: 14 mm
  • Warranty: 60-day NGK limited warranty
see more Fits the following 2005 Mercury Grand Marquis submodels:
  • 8 Cyl 4.6L | GS, LS, GSL, Limited Edition, Ultimate Edition
NGK Spark Plug, NGK V-Power, Direct Fit, Sold Individually
$4.87 List Price $5.75 Save $0.88 Availability: In Stock
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  • SKU#: NGTR55
  • Electrode Core Material: Copper
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Nickel alloy
  • Gap Size: 1.5 mm
  • Heat Range: 5
  • Notes: Ships to U.S. addresses only. Cannot be shipped internationally.
  • Reach: 17.55 mm
  • Thread Size: 14 mm
  • Warranty: 60-day NGK limited warranty
see more Fits the following 2005 Mercury Grand Marquis submodels:
  • 8 Cyl 4.6L | GS, LS, GSL, Limited Edition, Ultimate Edition

NGK Laser Iridium OE replacement Spark Plug

NGK Laser Iridium Spark Plug series provides superior ignitability and long service life. The smallest tip diameter Iridium or Platinum surface ensures slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency, and lower emissions.


Features:

  • Ultimate evolution of spark plug technology and performance
  • Reduces the voltage requirement for spark which allows for a brighter and stronger spark from the existing ignition system
  • Iridium tipped fine wire center electrode is both stronger and harder than Platinum, while the Platinum tipped ground electrode further contributes toward the extreme longevity of the plug
  • Special design firing end construction
NGK Spark Plug, NGK Laser Iridium, Direct Fit, Sold Individually
$22.15 List Price $26.14 Save $3.99 Availability: In Stock
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  • SKU#: NG97287
  • Electrode Core Material: Iridium
  • Anticipated Ship Out Time: Same day - 1 business day
Fits the following 2005 Mercury Grand Marquis submodels:
  • 8 Cyl 4.6L | GS, LS, GSL, Limited Edition, Ultimate Edition

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
$21.92 List Price $25.87 Save $3.95 Availability: In Stock
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  • SKU#: NG6579
  • Plug Type: Resistor
  • Electrode Core Material: Copper
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Iridium/Platinum
  • Gap Size: 1.1 mm
  • Notes: Ships to U.S. addresses only. Cannot be shipped internationally.
  • Reach: 17.55 mm
  • Thread Size: 14 mm
  • Warranty: 60-day NGK limited warranty
see more Fits the following 2005 Mercury Grand Marquis submodels:
  • 8 Cyl 4.6L | GS, LS, GSL, Limited Edition, Ultimate Edition

Denso Platinum TT OE replacement Spark Plug

Denso Platinum TT OE Replacement Spark Plug

Denso is the world's leading provider of high quality automotive merchandises which are engineered from the modernized facilities and equipments. Denso's proficiencies with their products are better than rivals as they initially built them along with their strict and valued standards.

Denso Platinum Twin Tip Spark Plugs features revolutionary twin tip design that provides better ignitability for a more powerful and fuel-efficient combustion yielding better engine performance in terms of power and fuel economy.

Features:

  • Improves mileage and reduces carbon emissions
  • Provides additional power and quicker starts
Denso Spark Plug, Denso Platinum TT, Direct Fit, Sold Individually
$5.60 List Price $6.61 Save $1.01 Availability: In Stock
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  • SKU#: NPPT16TT
  • Plug Type: Resistor
  • Electrode Core Material: Platinum
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Platinum
  • Gap Size: 1.1 mm
  • Heat Range: 16
  • Reach: 18 mm
  • Thread Size: 14 mm
  • Warranty: 1 year Denso limited warranty
see more Fits the following 2005 Mercury Grand Marquis submodels:
  • 8 Cyl 4.6L | GS, LS, GSL, Limited Edition, Ultimate Edition

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PULSTAR IRIDIUM PULSE SPARK PLUG
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MOTORCRAFT OE REPLACEMENT SPARK PLUG
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CHAMPION SPARK PLUG
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