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Frequently asked questions about cars and motorcycles

How to Remove and Replace Spark Plugs

Model: Subaru Outback MK 4, BM, BR - Years 2009-2014
Part: Spark plugs

This video tutorial shows how to replace the spark plugs on a Subaru Outback. The procedure is not very simple as the spark plugs are located in somewhat awkward positions. The first two are situated on the right side of the engine; in this case, the electrical connector has already been removed, so the spark plugs are extracted by unscrewing them with a power tool and a 10 mm hex bit. Once extracted, they can be replaced with two new spark plugs. The other two spark plugs, located on the opposite side, are covered by the intake manifold. Therefore, you will need to remove this first. To disconnect the electrical connection of the spark plugs, unscrew the small bolts that hold them in place, and then detach the clip of the connection itself. Now you can extract and replace these two spark plugs using the power tool and hex bit. In the last few minutes, it also shows how to extract or tighten the spark plugs from a distance; a ratchet wrench connected to an extension with a spark plug socket at the end is used.

Updated on 11 February 2026 by ScegliAuto

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