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Part #SP840
Spark Plug Bosch +4

Spark Plug Bosch +4 All 4-Cylinder and V/6

We’ve had great results with these in our own cars! Four ground electrodes provide multiple spark paths, each spark finding the most efficient route. We have found that Platinum +4s have superior cold starting performance and are less prone to fouling. The center electrode has 75% more platinum than the standard Bosch Platinum plugs, and with 4 ground electrodes, they have a significantly increased lifespan.

Bosch Platinum +4 spark plug, to fit all 4-cylinder Alfas and all SOHC V/6 engines in GTV/6, Milano, and 164.

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