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How to Replace the Spark Plugs on the Nissan Frontier 4.0L V6

Model: Nissan Frontier D40 - Years 1997-2021
Part: Spark plugs

In today's tutorial video, we will see how to remove and replace the spark plugs on the Nissan Frontier with a 4.0L V6 engine. First, open the hood of your vehicle and start by removing the intake hose connected to the air filter box. Next, remove the hoses located at the top, disconnecting the mass airflow sensor, as shown in the video. At this point, disconnect the spark plug connectors using a socket wrench with an extension to unscrew and remove them. Replace them with new ones that have the same thread pitch and heat rating!

Updated on 20 May 2026 by ScegliAuto

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by ScegliAuto

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