Ignition Coil and Iridium Spark Plugs for Toyota Sienna (2001-2006) 3.3L

Direct-Replacement Ignition Coil and Iridium Spark Plug Kit for 2001-2006 Toyota Sienna

What it Does: Replaces degraded factory coil packs and worn spark plugs with high-dielectric assemblies and fine-wire iridium plugs to eliminate misfires and restore complete combustion efficiency.

The Stock Sienna Ignition Breakdown

Transverse engine packaging in the Sienna exposes the rear cylinder bank to extreme ambient heat soak within the cramped firewall cavity. Over repeated thermal cycles, factory coil epoxy insulation degrades, micro-fracturing the casing and causing high-voltage arcing to the cylinder head rather than across the spark gap. Simultaneously, aged OEM electrodes erode, widening the gap and overworking the primary ignition circuits, culminating in hesitation, rough idle, poor fuel economy, and P0300-series diagnostic trouble codes.

The Engineering Solution

This comprehensive ignition service kit features six direct-fit coil-on-plug units wound with high-conductivity oxygen-free copper, encased in high-temperature thermoplastic housings engineered to withstand thermal cycling. Paired with six fine-wire iridium spark plugs, the system requires lower firing voltage to initiate a stable kernel, ensuring rapid flame propagation and reliable spark delivery across the entire operating RPM range.

Technical Specifications

Compatibility

• 2001-2006 Toyota Sienna (CE, LE, XLE, XLE Limited 3.3L V6)
• Direct interchange for OEM Part Numbers: UF267, 90919-02234, 90080-19016, C1175

The Toyota Reliability Standard

Engineered for high-mileage dependability, this ignition kit sustains stable combustion during extended highway cruising and heavy payload hauling, preventing check engine lights and keeping your minivan running at factory efficiency.