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How to Replace Spark Plugs on a Nissan Altima

Model: Nissan Altima L31 - Years 2002-2006
Part: Spark plugs

To replace the spark plugs on a Nissan Altima, open the hood to access the bolts securing the plastic cover on top of the engine block. Once the cover is removed, you can access the ignition coils, which need to be disconnected and removed from their housing by loosening the appropriate bolt. After the coils are removed, the spark plugs underneath can be taken out using a socket wrench and replaced with new ones; all other parts can then be reassembled.

Updated on 4 May 2026 by ScegliAuto

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