Infiniti G35 Spark Plug Replacement at your home or office.

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Spark Plug Replacement Estimate for Infiniti G35

Infiniti G35 Spark Plug Replacement costs $141 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$140 to $160
Labor: $126 -$144
Parts: $14 -$16
Average Dealer price
$196 to 200
Average Shop price
$168 to 171
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceEstimateShop/Dealer Price
2008 Infiniti G35V6-3.5LService typeSpark Plug ReplacementEstimate$158.88Shop/Dealer Price$212.84 - $271.80
2004 Infiniti G35V6-3.5LService typeSpark Plug ReplacementEstimate$154.20Shop/Dealer Price$207.20 - $262.82
2006 Infiniti G35V6-3.5LService typeSpark Plug ReplacementEstimate$154.20Shop/Dealer Price$207.06 - $262.57
2003 Infiniti G35V6-3.5LService typeSpark Plug ReplacementEstimate$154.20Shop/Dealer Price$207.13 - $262.69
2007 Infiniti G35V6-3.5LService typeSpark Plug ReplacementEstimate$154.20Shop/Dealer Price$207.02 - $262.50
2005 Infiniti G35V6-3.5LService typeSpark Plug ReplacementEstimate$154.20Shop/Dealer Price$206.97 - $262.42
Show example Infiniti G35 Spark Plug Replacement prices

Spark Plug Replacement Service & Cost

What are the Spark Plugs all about?

The spark plugs are an important part of the ignition system. When you turn the ignition key (car's key) on, it causes the ignition coil to generate the spark which ignites the air-fuel mixture in the engine cylinders to start the engine. The number of spark plugs in the car is the same as the number of cylinders, although some vehicle manufacturers will use two spark plugs per cylinder.

Over time, the spark plugs wear out and require replacement. When the spark plugs wear out, it is harder for it the air-fuel mixture to ignite, resulting in engine misfires. If one of the spark plugs has failed, the car will still start and run, but it will run poorly. On some vehicles, spark plug replacement may be labor intensive and involve removal of the intake plenum.

Spark plugs-MATROX-1

Keep in mind:

  • When the spark plugs are replaced, it is a good idea to inspect the ignition cables as well.
  • Spark plugs come in numerous ratings, and the correct rating for your vehicle should always be used.

How it's done:

  • Scan the car for codes.
  • Clean all surface areas around the spark plugs.
  • Remove spark plugs.
  • Inspect threads in engine head (where plugs are installed).
  • Perform compression test if needed.
  • Inspect ignition wires.
  • Apply anti-seize to the threads of the spark plugs.
  • Install new spark plugs.
  • If needed replace any gaskets removed.

Our recommendation:

During routine maintenance and checkups, your ignition system should always be inspected. Any time that a component of the ignition system is replaced, it’s a good idea to consider replacing the spark plugs as well. If you don’t preemptively change your spark plugs your engine will let you know by misfiring or running poorly, so schedule an inspection as soon as you notice that your engine is not performing properly.

What common symptoms indicate you may need to replace the Spark Plugs?

  • Check Engine light is on.
  • Engine misfires.
  • Poor fuel economy.
  • Vibration coming from the engine.

How important is this service?

Spark plugs are responsible for igniting the fuel that your engine uses to run. When you turn your key, a small voltage of power is sent to the ignition coil, where it is transformed into high voltage currency. This high voltage currency is sent through the ignition cables to the spark plugs. The spark plugs use the power to create a spark, which ignites the fuel, and allows the engine to function.

When the spark plugs malfunction, this spark won’t be created, and the fuel will not be ignited as it should. Your vehicle has many spark plugs, so depending on how many fail, your engine may either run poorly, or not run at all. Continuing to drive a vehicle with malfunctioning spark plugs can also cause damage to the catalytic converter.

Fast and easy Spark Plug Replacement service at your home or office.

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Excellent Rating


Infiniti G35 Spark Plugs Replacement

Average Rating

4.3/5

Number of Reviews

10

Rating Summary
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Meet some of our expert Infiniti mechanics

Real customer reviews from Infiniti owners like you.

Lucas

13 years of experience
555 reviews
Lucas
13 years of experience
Great service and knows what he's doing. Would definitely book again.
2003 INFINITI G35 - CAR IS NOT STARTING - LOS ANGELES, CALIFORNIA

Jay

33 years of experience
439 reviews
Jay
33 years of experience
very professional, explained in plain English what he was going to do, and did it in a timely manner!
2004 INFINITI G35 - CAMSHAFT POSITION SENSOR - ONTARIO, CALIFORNIA

Chet

37 years of experience
345 reviews
Chet
37 years of experience
My engine on a 2003 Infiniti G35 started overheating. Chet came out and diagnosed that the water pump and/or thermostat most likely were the culprits. For the inspection appointment as well as for the repair appointment Chet was on time (even early). He went more than beyond his usual duties to get the car running again. I had a hick-up right after the repair and overheating happened again. Called the warranty team and they first dispatched another mechanic (as Chet was supposed to be off this day) but I already had him texted pictures of the overheating. So he called his office and came in to check on the still overheating engine on his day off. He took care of the final piece. THANK YOU CHET!
2003 INFINITI G35 - WATER PUMP - SAN DIEGO, CALIFORNIA

Charles

13 years of experience
174 reviews
Charles
13 years of experience
Very skilled, articulate mechanic. Got here on time, determined the repair needed fewer parts than quoted, completed the repair and saved me 44% of the original quote and 62% of the dealer quote.
2004 INFINITI G35 - WINDOW MOTOR / REGULATOR ASSEMBLY REPLACEMENT (PASSENGER SIDE FRONT) - PALO ALTO, CALIFORNIA
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceEstimateShop/Dealer Price
2008 Infiniti G35V6-3.5LService typeSpark Plug ReplacementEstimate$158.88Shop/Dealer Price$212.84 - $271.80
2004 Infiniti G35V6-3.5LService typeSpark Plug ReplacementEstimate$154.20Shop/Dealer Price$207.20 - $262.82
2006 Infiniti G35V6-3.5LService typeSpark Plug ReplacementEstimate$154.20Shop/Dealer Price$207.06 - $262.57
2003 Infiniti G35V6-3.5LService typeSpark Plug ReplacementEstimate$154.20Shop/Dealer Price$207.13 - $262.69
2007 Infiniti G35V6-3.5LService typeSpark Plug ReplacementEstimate$154.20Shop/Dealer Price$207.02 - $262.50
2005 Infiniti G35V6-3.5LService typeSpark Plug ReplacementEstimate$154.20Shop/Dealer Price$206.97 - $262.42
Show example Infiniti G35 Spark Plug Replacement prices

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