Ignition Coil and Iridium Spark Plugs for Volvo S60 (2005-2009) 2.3L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2005-2009 Volvo S60

What it Does: The ignition coil and iridium spark plug kit restores secondary ignition voltage and consistent spark delivery on the 2005-2009 Volvo S60 to eliminate high-boost misfires and stabilize idle quality.

The Stock Volvo S60 Dielectric Breakdown & Thermal Stress

Factory coil packs seated across the cylinder head of the P2 chassis Volvo S60 are subjected to relentless heat cycling trapped under the top plastic valve cover. Over time, prolonged exposure to operating temperatures exceeding 200°F breaks down the factory silicone insulation and internal secondary winding epoxy. This degradation causes internal dielectric tracking, micro-arcing, and sudden misfires under boost. Compounding this, standard factory copper or nickel plugs experience progressive electrode erosion, widening the spark gap and demanding significantly higher breakdown voltage from the coils, which accelerates coil driver failure and triggers check engine lights (DTC P0300–P0305).

The Engineering Solution

This complete 5-cylinder ignition kit restores primary and secondary electrical efficiency on the B5234T3 2.3L modular engine. Each coil features premium copper wire windings insulated with high-grade polyurethane dielectric resin to prevent internal shorting under thermal load. The boots are molded from chemical-resistant silicone to seal spark plug wells against oil vapor and moisture. Paired with fine-wire iridium spark plugs, this kit significantly reduces ignition voltage demand, maximizes flame kernel propagation, and stabilizes combustion under boost pressure. All components are calibrated to direct-fit OE impedance, interchanging cleanly with OEM reference numbers 30713417, 8677837, and UF517.

Technical Specifications

Compatibility

• 2005 Volvo S60 2.3L 5-Cylinder Turbo
• 2006 Volvo S60 2.3L 5-Cylinder Turbo
• 2007 Volvo S60 2.3L 5-Cylinder Turbo
• 2008 Volvo S60 2.3L 5-Cylinder Turbo
• 2009 Volvo S60 2.3L 5-Cylinder Turbo

Frequently Asked Questions

Does this fit the P2 S60?
Yes, this is a direct fit for the 2005-2009 Volvo S60 equipped with the B5234T3 engine.

Are the included spark plugs pre-gapped for turbo operation?
Yes, the iridium plugs come pre-gapped to factory specifications, though verifying gap clearance prior to installation is recommended.

The Volvo Precision Standard

Engineered to meet stringent European diagnostic protocols, these ignition components integrate seamlessly with the factory Bosch Motronic engine management system to maintain zero-CEL operation, precise dwell times, and optimal emissions compliance.