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How to Replace the Spark Plugs on an Alfa Romeo 147

Model: Alfa Romeo 147 MK 1 - Years 2000-2010
Part: Spark plugs

This model of car is famous for introducing the twin spark system, which uses two spark plugs for each cylinder, one larger with two electrodes and one smaller: during the spark plug replacement, you will need to change all 8; first, remove the engine cover, disconnect the battery and the power connectors of the ignition coils; then proceed to unscrew the fixing screws of the plate that supports both the ignition coils and the spark plug leads, remove it, and unscrew the spark plugs; screw in the new ones without exceeding the torque specification and reassemble the leads and coils.

Updated on 20 February 2026 by ScegliAuto

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