Ignition Coil and Iridium Spark Plugs for Toyota Avalon (2000-2004) 3.0L

Direct-Fit Ignition Coil and Iridium Spark Plug Service Kit for 2000-2004 Toyota Avalon

What it Does: Restores factory secondary ignition performance and resolves multi-cylinder misfires on transverse V6 applications by replacing degraded coil packs and worn spark plugs.

The Stock Avalon Ignition Degradation

The transverse 1MZ-FE engine layout subjects the rear bank ignition coils to chronic thermal soak trapped against the firewall. Over extended thermal cycles, OEM epoxy insulation hardens and micro-fractures, allowing high-voltage secondary leakage to ground. Concurrently, standard electrode erosion widens the plug gap, requiring higher secondary kV to ionize, which accelerates coil thermal overload, causes high-load misfires (P0300-P0306), and degrades fuel efficiency.

The Engineering Solution

This comprehensive tune-up kit features six heavy-duty coil-on-plug assemblies engineered with high-density copper primary and secondary windings encased in dielectric epoxy resin to eliminate internal arc-through. Paired with six fine-wire iridium spark plugs, the assembly lowers breakdown voltage requirements, stabilizes idle characteristics, and withstands persistent underhood temperatures without resistance breakdown or signal degradation at the blade terminals.

Technical Specifications

Compatibility

• 2000 Toyota Avalon XL / XLS 3.0L V6 1MZ-FE
• 2001 Toyota Avalon XL / XLS 3.0L V6 1MZ-FE
• 2002 Toyota Avalon XL / XLS 3.0L V6 1MZ-FE
• 2003 Toyota Avalon XL / XLS 3.0L V6 1MZ-FE
• 2004 Toyota Avalon XL / XLS 3.0L V6 1MZ-FE

The Toyota Reliability Standard

Engineered to meet precise JDM factory electrical impedance and dwell angle parameters, these coils provide steady flame kernel propagation and ensure complete combustion without triggering false misfire codes or check engine lights.