Spark Plug Set – Volvo (8642660)

Spark Plug Set is part of the circuit that reports engine or transmission behaviour back to the control module. It is read continuously, and a value that drifts out of range sets a fault code long before the driver notices anything.

Replace the Spark Plug Set when the code returns after clearing, when the live data reading is out of range at operating temperature, or when the housing shows heat damage. Check the ground and the connector pins first.

This Spark Plug Set is listed as part 8642660 (Spark Plugs & Ignition). Where a number has been superseded, the current reference is the one that ships, so check any supersession note before ordering.

This is genuine VOLVO stock, supplied for the Spark Plug Set with the manufacturer number intact so the reference on the box matches the catalogue.

This is sold as an set; if only one component has failed, confirm whether the single part is available separately.