Lexus GS350 Spark Plug Replacement at your home or office.

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$171.27 - $482.47

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Spark Plug Replacement Estimate for Lexus GS350

Lexus GS350 Spark Plug Replacement costs $284 on average.

CarServiceEstimateShop/Dealer Price
2008 Lexus GS350V6-3.5LService typeSpark Plug ReplacementEstimate$811.96Shop/Dealer Price$1023.36 - $1562.71
2011 Lexus GS350V6-3.5LService typeSpark Plug ReplacementEstimate$489.71Shop/Dealer Price$616.91 - $945.59
2016 Lexus GS350V6-3.5LService typeSpark Plug ReplacementEstimate$282.55Shop/Dealer Price$355.45 - $524.07
2015 Lexus GS350V6-3.5LService typeSpark Plug ReplacementEstimate$494.71Shop/Dealer Price$622.77 - $952.10
2009 Lexus GS350V6-3.5LService typeSpark Plug ReplacementEstimate$489.71Shop/Dealer Price$619.85 - $950.74
2014 Lexus GS350V6-3.5LService typeSpark Plug ReplacementEstimate$489.71Shop/Dealer Price$614.77 - $941.85
2013 Lexus GS350V6-3.5LService typeSpark Plug ReplacementEstimate$489.71Shop/Dealer Price$611.39 - $935.93
2007 Lexus GS350V6-3.5LService typeSpark Plug ReplacementEstimate$489.71Shop/Dealer Price$615.80 - $943.64
Show example Lexus GS350 Spark Plug Replacement prices

Service

What are spark plugs and how do they work?

A spark plug is a precision-manufactured electrical device that passes a very high voltage pulse across two electrodes. The ignition system in your car generates very high voltage, as much as 50,000 volts. As that high voltage flows to each plug, the path to ground is interrupted by the spark plug gap, which varies depending on the engine. The voltage is high enough to jump that gap gauge and ignites the air-fuel mixture created. Like all engine components that operate in synchrony, the spark at each spark plug is timed to maximize power and efficiency and also to keep engine emissions as low as possible.

Spark plugs-MATROX-1

When to replace spark plugs:

  • Vehicle maintenance schedule. Spark plugs are a routine maintenance item, and should always be replaced according to the factory maintenance schedule.

If a spark is found to be faulty, it should be replaced, since it can cause any number of unfavorable symptoms, such as:

  • Difficulty starting your car.
  • Flashing check engine light.
  • Reduced fuel economy and/or power.
  • Rough idle and/or unexplained engine vibration.
  • Failed State emission testing.

Even if only one spark plug is found to be faulty, it is common to replace them all at that time.

How do mechanics replace spark plugs?

Spark plugs are threaded into the engine’s cylinder head(s). Most cars have one plug per cylinder, so a four-cylinder engine will have four plugs, a six-cylinder engine will have six plugs, and so forth. Not all the steps below apply to all cars, but the replacement procedure is as follows:

  • Determine correct plug based on OEM catalog, VIN, or underhood sticker.
  • Remove plastic engine cover, if applicable. Remove all components on top of the plug including coil-on-plug assemblies, spark plug wires, and so forth.
  • Unthread plug while the engine is cold.
  • Inspect removed plug to look for clues indicating any engine mis-operation exists; such as oil burning, excessively rich mixture, pre-ignition damage etc. Inform owner of any found unusual conditions.
  • Verify part numbers of new spark plugs. Adjust the gap to specification (if adjustable type), and install new plugs using a calibrated inch-pound torque wrench. Adjust torque if anti-seize is required on plug threads.
  • Finally, a road test of the vehicle to confirm normal operation.

Is it safe to drive with a spark plugs problem?

Yes, but spark plugs that are worn enough to cause engine-misfiring have the potential to cause engine damage and overheating of the catalytic converter. Generally, plug misoperation will not cause the engine to fail to run, but in cases of extreme wear, you may experience a limitation in the speed at which you can operate. If the maintenance schedule says the plugs should be replaced, it is best to do so promptly. Regardless of the age of the plugs, or elapsed mileage, if the engine misfires or runs poorly, the plugs should be inspected for defects.

When replacing spark plugs keep in mind:

  • High-speed driving may accelerate spark plug wear. Consider earlier than required inspection and tune-up if you operate the car in severe conditions.
  • The correct spark plug is critical for proper operation of your engine. Do not allow substitute part numbers. Always use brand name parts.
  • Never remove spark plugs from a hot engine.
  • Anti-seize compounds require that the OEM torque rating be adjusted downward. OEM torque assumes clean, dry spark plug threads with no lubricants.
  • Plugs should always be promptly replaced per the manufacturer maintenance schedule even if they appear to be working perfectly. If you delay replacement, the spark plug threads may weld themselves to the aluminum cylinder head, thus making later replacement very difficult and costly if the aluminum threads are damaged.
  • If your vehicle is equipped with spark plug wires (as opposed to a coil-on-plug system), the wires should be tested for electrical resistance at 100,000 miles or just replaced outright with new, name brand wires.

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Meet some of our expert Lexus mechanics

Real customer reviews from Lexus owners like you.

Excellent Rating


YourMechanic Lexus GS350 Spark Plugs Replacement Service

Average Rating

4.6/5

Number of Reviews

4

Rating Summary
3
1
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0
0
3
1
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Jason

14 years of experience
427 reviews
Jason
14 years of experience
It was my first time using Your Mechanics and it won’t be the last because of Jason’s excellent service. Jason called me before the visit to recommend using a different brand of spark plugs to save a decent chunk of money (ngk vs denco). During his visit, I was in and out of the garage but while, Jason clearly explained what he was doing. Definitely not for everyone but I rather enjoyed learning about my own car instead of being completely in the dark during regular garage visits. There was a quirk in how my car readjusts idle control after the spark plugs are changed. Jason stuck around for an extra hour until he figured it out (answer: disconnect battery for 10min). I felt comfortable through out the process. Highly recommend Jason.
2007 LEXUS GS350 - SPARK PLUGS - MORGAN HILL, CALIFORNIA

Matthew

8 years of experience
136 reviews
Matthew
8 years of experience
I booked him based on good reviews from lexus owners. He showed up on time and changed the spark plugs within an hour. He, at least to my viewpoint, is all business (focused and quiet). But when questions are asked, he stops and answers with manner. I will book him again in future.
2008 LEXUS GS350 - SPARK PLUG REPLACEMENT - LAS VEGAS, NEVADA

Chris

19 years of experience
1240 reviews
Chris
19 years of experience
Easy, fast, great service and help by Chris!
2013 LEXUS GS350 - SPARK PLUGS - WESTMINSTER, CALIFORNIA

Breck

17 years of experience
355 reviews
Breck
17 years of experience
Breck was on time, efficient, and got the job done.
2007 LEXUS GS350 - SPARK PLUG REPLACEMENT - MISSOURI CITY, TEXAS

Excellent Rating


YourMechanic Lexus GS350 Spark Plugs Replacement Service

Average Rating

4.6/5

Number of Reviews

4

Rating Summary
3
1
0
0
0
3
1
0
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0
Red-stars EXCELLENT RATING ON
Number of Lexus GS350 Spark Plugs Replacement services completed
44+
services done by our mechanics
TOTAL NUMBER OF EXPERT Lexus MECHANICS
700+
experts on our platform

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