Replacement Spark Plugs for the 997 Cup car. OEM Bosch Y5DDC can often be hard to source. These are a similar spark plug produced by Denso that are compatible with the 997 Cup car. They offer similar performance to the OEM Bosch spark plugs at a slightly lower price. Spark plugs are sold individually with 6 needed to replace an entire set.

Equivalent to 999.170.129.90

Fits: 997 Cup car