How are spark plugs, and what tools and precautions are necessary for the process on Mazda 6?

The spark plugs are located in the middle of the value cover(s) and while accessing the rear cylinder bank spark plugs on V6 models, the upper intake manifold has to be removed. The equipment that is usually needed to replace the spark plugs are a spark plug socket that fits a ratchet, some extensions, and a gap gauge to check the gap of the new plugs and tighten them with a torque wrench. Purchase new plugs would be a good idea in advance, accordingly fix them to fit the right gap, and change one of them at a time, and be certain that one gets the right type of plug to fit that particular engine. It is essential to give the engine time to cool down before loosening any plugs so as not to damage the aluminum cylinder heads and in the meantime, check the new plugs and close the gaps. This is checked between the electrodes on the tip of the plug with a proper-thickness gauge, where the curved electrode is slid with a slight drag, and, should it be necessary, the curved side electrode may be bent slightly. They all have individual ignition coils which have to be dismantled to reach the spark plugs. In case of any compressed air, then it can be sprayed into the spark plug hole to clear any dirt or debris to avoid contamination during the procedure. The spark plug can be removed by placing the socket on top of it and twisting it counterclockwise. The threads of the new spark plug should have a small portion of anti-seize compound applied to them then it should be installed by hand until it can no longer turn and then tightened with a torque wrench or ratchet. Installation could be easier with a small piece of rubber hose over the end of the plug to prevent cross-threading. This process must be followed on the rest of the spark plugs.

Genuine Mazda 6 Spark Plug

Ignition Spark Plug

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8 Spark Plugs found

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Mazda 6 Spark Plug Part Number: AJTT-18-110
$4.65 MSRP: $6.20
You Save: $1.55 (25%)
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Product Specifications
- Other Name: Spark Plug Cp=12
- Replaces: AJ57-18-110, AJH3-18-110, AJ57-18-110A
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2007-2008 Mazda 6 | S | 6 Cyl 3.0 L GAS
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Mazda 6 Spark Plug Part Number: GY01-18-110
$4.84 MSRP: $6.45
You Save: $1.61 (25%)
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Product Specifications
- Other Name: Plug, Spark
- Replaces: GY02-18-110, ZZM3-18-110A, ZZM6-18-110, ZZM3-18-110B, ZZM3-18-110C, ZZM3-18-110
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2003-2006 Mazda 6 | S | 6 Cyl 3.0 L GAS
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Mazda 6 Spark Plug Part Number: LFJD-18-110-9U
$18.35 MSRP: $24.48
You Save: $6.13 (26%)
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Product Specifications
- Other Name: Spark Plug Cp=12
- Replaces: 0000-18-L3Y2, L3Y2-18-110, LFJD-18-110, LFG1-18-110
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2006-2013 Mazda 6 | i | 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS
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Mazda 6 Spark Plug Part Number: 0000-18-L3Y3
$19.51 MSRP: $26.02
You Save: $6.51 (26%)
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Product Specifications
- Other Name: Spark Plug Cp=12
- Replaces: L3Y3-18-110, L3K9-18-110, L3K9-18-110A
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2006-2007 Mazda 6 | Mazdaspeed | 4 Cyl 2.3 L GAS
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Mazda 6 Spark Plug Part Number: PY8V-18-110
$31.36 MSRP: $41.83
You Save: $10.47 (26%)
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Product Specifications
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2018-2021 Mazda 6 | Carbon Edition, Grand Touring, Grand Touring Reserve, Signature | 4 Cyl 2.5 L GAS
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Mazda 6 Spark Plug Part Number: L845-18-110
$15.08 MSRP: $20.10
You Save: $5.02 (25%)
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Product Specifications
- Other Name: Spark Plug Cp=12
- Replaces: L303-18-110, ZZC0-18-110, L813-18-110, L341-18-110
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2003-2005 Mazda 6 | i | 4 Cyl 2.3 L GAS
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Mazda 6 Spark Plug Part Number: PE5R-18-110A
$32.49 MSRP: $43.32
You Save: $10.83 (25%)
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Product Specifications
- Other Name: Plug, Spark; Spark Plug
- Replaces: PE01-18-110A, PE01-18-110, PE5S-18-110, P51R-18-110, PE02-18-110, PE20-18-110, PE21-18-110, PE5R-18-110
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2014-2021 Mazda 6 | Grand Touring, Sport, Touring | 4 Cyl 2.5 L GAS
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Mazda 6 Spark Plug Part Number: ZZJ1-18-110
$11.03 MSRP: $14.70
You Save: $3.67 (25%)
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Product Specifications
- Other Name: Plug, Spark
- Replaces: CY02-18-110, CY01-18-110
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2009-2013 Mazda 6 | S | 6 Cyl 3.7 L GAS

Mazda 6 Spark Plug

The Mazda 6 Spark Plug provides the small flash that enables the sedan to wake up and move, changing battery voltage into a hot spark, which then activates the air-fuel mixture in each cylinder. The plug, which is designed to operate at up to forty-five thousand volts, high heat, and chemical explosions, is mounted in a metal shell with a ceramic insulator and two facing electrodes, but it must be able to separate ionized gases at exactly the right rate to maintain constant combustion. When a single plug fails, the start of rough cold operation, irregular idling, and lower mileage are noticed within a short time, and thus the owners of Mazda cars are encouraged to replace the part when those signs emerge since a dead cylinder is the next thing to occur. The older model years were based on traditional single-ground designs, with the newer direct-injected models in the line-up using leaner ratios and thus requiring a cleaner, quicker arc, where the modern-day Spark Plug is particularly important in producing sharp throttle response and minimal emissions. Construction fundamentals remain the same, but new tips, smaller apertures, and even more than one side electrode will prolong service in more demanding conditions. Making the color of the firing end readable or indexing the shell may also be useful to indicate mixture problems and allow alignment of the gap toward the fuel swirl. The replacement of a Spark Plug is not hard and is inexpensive because it takes no more than a few minutes to replace the part, and it immediately restores the typical mellow pull that Mazda drivers are applied to in subsequent 6 editions, showing that the small component serves an outsize purpose in every Mazda adventure.

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Mazda 6 Spark Plug Parts and Q&A

Spark Plug
0000-18-L3Y3
Q: How are spark plugs, and what tools and precautions are necessary for the process on Mazda 6?
A:
The spark plugs are located in the middle of the value cover(s) and while accessing the rear cylinder bank spark plugs on V6 models, the upper intake manifold has to be removed. The equipment that is usually needed to replace the spark plugs are a spark plug socket that fits a ratchet, some extensions, and a gap gauge to check the gap of the new plugs and tighten them with a torque wrench. Purchase new plugs would be a good idea in advance, accordingly fix them to fit the right gap, and change one of them at a time, and be certain that one gets the right type of plug to fit that particular engine. It is essential to give the engine time to cool down before loosening any plugs so as not to damage the aluminum cylinder heads and in the meantime, check the new plugs and close the gaps. This is checked between the electrodes on the tip of the plug with a proper-thickness gauge, where the curved electrode is slid with a slight drag, and, should it be necessary, the curved side electrode may be bent slightly. They all have individual ignition coils which have to be dismantled to reach the spark plugs. In case of any compressed air, then it can be sprayed into the spark plug hole to clear any dirt or debris to avoid contamination during the procedure. The spark plug can be removed by placing the socket on top of it and twisting it counterclockwise. The threads of the new spark plug should have a small portion of anti-seize compound applied to them then it should be installed by hand until it can no longer turn and then tightened with a torque wrench or ratchet. Installation could be easier with a small piece of rubber hose over the end of the plug to prevent cross-threading. This process must be followed on the rest of the spark plugs.