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Mercury Mariner Spark Plug Replacement Cost

The average cost for a Mercury Mariner Spark Plug Replacement is between $309 and $408. Labor costs are estimated between $237 and $300 while parts are priced between $72 and $108. Estimate does not include taxes and fees.
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How Much Does a Spark Plug Replacement Cost?

Spark Plug Replacement Service and Cost

Best Practices

To prevent ignition misfires and Check Engine Light problems, we recommend using only high-quality spark plugs, and preferably spark plugs from Mercury.

Spark plugs have different ratings and it's important that the correct type are used.

Spark plug terminals wear down over time and can lead to engine misfires. At minimum, they need to be replaced at the mileage specified by Mercury.

Common Symptoms

Failing spark plugs can cause the Mercury Mariner's engine to run rough and misfire, which can trigger the Check Engine Light. Continuing to drive under these conditions can damage the catalytic converter.

Most Common Mercury Mariner Repairs

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