Spark Plug Set – Volvo (31286359)

Spark Plug Set is an electrically controlled component in the engine or transmission management system. Because the module cross-checks it against other inputs, a fault here often surfaces as a code for a different circuit.

Replace the Spark Plug Set when a value freezes or drops out intermittently, which usually means an internal fault rather than wiring. Wiggle-testing the harness while watching live data separates the two.

This Spark Plug Set is listed under part number 31286359, filed under Spark Plugs & Ignition. If the original number is unreadable, send us the VIN and we will confirm the reference before dispatch.

The stock here is genuine VOLVO, and this Spark Plug Set keeps the original engineering number, which matters once a number has been superseded more than once.

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