MERCURY Mountaineer Spark plug replacement Cost
2006–2010 · Engine, Fuel & Emissions system
Typical range
$126–$492
Parts + labour
Labour hours
0.5–1.5h
At a typical garage
Spark plugs ignite the air–fuel mixture; worn plugs cause misfires, rough idle, poor fuel economy and difficulty starting. Most modern engines use iridium or platinum plugs with 60,000–100,000-mile intervals. MERCURY Mountaineer spark plug replacement costs $126–$492.
Typical parts included
- Spark plug
- Spark plug
What affects the price
- Copper vs iridium vs platinum plugs (iridium lasts longest)
- Number of cylinders
- Accessibility—some engines require intake manifold removal, adding significant labour
Common questions
How long does this repair take?
Spark plug replacement on a MERCURY Mountaineer typically takes 0.5–1.5 hours at a garage.
How often does this need to be done?
For a MERCURY Mountaineer, this is typically needed every 30,000 miles for copper plugs; every 60,000–100,000 miles for iridium or platinum plugs.
Other engine, fuel & emissions system repairs on the MERCURY Mountaineer
- ABS hydraulic unit replacement$468–$842
- ABS sensor replacement$193–$347
- ABS system bleeding$154–$277
- AC compressor clutch replacement$385–$693
- AC compressor replacement$413–$743
Spark plug replacement cost on similar cars
- LAND ROVER Range Rover$120–$216
- JEEP Grand Cherokee$110–$198
- CHEVROLET Tahoe$120–$216
- FORD Expedition$120–$216
- GMC Yukon$120–$216
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