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Spare parts reviews ➔ All comparisons ➔ Bosch ➔ Denso Page 17

Spark plug Bosch or Denso

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Bosch
Denso
Denso › Spark plug
londons_explorer
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Rating 5.0

I bought the absolute cheapest plugs available ($1.50/plug), and they are branded "Denso Toyota Iridium" - I assume fakes, but my magnifying glass does seem to show an iridium tip, and they work great.

Pros: work great
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Denso › Spark plug
d_stad
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Rating 5.0

I've always used the Denso SK20R11 plugs in mine and been pleased.

Pros: been pleased
Part number: SK20R11
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Denso › Spark plug
VWRook
Rating 3.0

No discernible difference to me, positive or negative. But since I am running APR stage 1, I followed APR's recommendation.

Vehicle: Volkswagen
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Bosch › Spark plug
RickMN
Rating 1.0

This is why I don't use Bosch plugs. It goes back to the quad fire plugs with a platinum center electrode that would fall out.

Cons: platinum electrode fall out
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