Ignition Coil and Iridium Spark Plugs for Toyota Avalon (1996-1999) 3.0L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 1996-1999 Toyota Avalon

What it Does: The Ignition Coil and Iridium Spark Plug Kit restores primary and secondary ignition energy on the 1996-1999 Toyota Avalon to eliminate misfires, stabilize idle, and maintain clean combustion efficiency.

The Stock Toyota Avalon Ignition Breakdown

Under the hood of the MCX10 chassis, the transverse-mounted 1MZ-FE 3.0L V6 experiences significant thermal stress, particularly on Bank 1 against the firewall. Over decades of heat cycling, factory coil epoxy potting degrades, developing microscopic fissures that cause dielectric puncture, secondary voltage leakage, and internal winding short-circuits. Paired with aged spark plugs suffering from ground electrode erosion and expanded plug gaps, the aging ignition system requires higher secondary voltage to arc, overloading the coil drivers and triggering intermittent P0300 through P0306 misfire trouble codes under acceleration.

The Engineering Solution

This comprehensive tune-up kit replaces all aging components with reinforced ignition coils and fine-wire iridium spark plugs. The coils feature high-temp vacuum-poured epoxy potting and thermal-resistant PBT housings to insulate copper core windings against engine-bay heat soak. Each iridium plug incorporates a laser-welded, ultra-fine center electrode engineered to minimize arc quenching, reduce required striking voltage, and resist carbon fouling. Direct cross-compatibility with OEM references UF155, 90919-02215, and 90080-19012 guarantees precise plug-and-play fitment into factory wiring harnesses and spark plug tubes without repinning.

Technical Specifications

Compatibility

• 1996 Toyota Avalon XL Sedan 3.0L V6 (1MZ-FE)
• 1996 Toyota Avalon XLS Sedan 3.0L V6 (1MZ-FE)
• 1997 Toyota Avalon XL Sedan 3.0L V6 (1MZ-FE)
• 1997 Toyota Avalon XLS Sedan 3.0L V6 (1MZ-FE)
• 1998 Toyota Avalon XL Sedan 3.0L V6 (1MZ-FE)
• 1998 Toyota Avalon XLS Sedan 3.0L V6 (1MZ-FE)
• 1999 Toyota Avalon XL Sedan 3.0L V6 (1MZ-FE)
• 1999 Toyota Avalon XLS Sedan 3.0L V6 (1MZ-FE)

Frequently Asked Questions

Does this fit the MCX10 Avalon?
Yes, this is a direct fit for the 1996-1999 Toyota Avalon equipped with the 1MZ-FE 3.0L V6 engine.

Are the iridium spark plugs pre-gapped for the 1MZ-FE?
Yes, the iridium spark plugs are factory pre-gapped to OEM specification for immediate drop-in installation.

The Toyota Caliber

Engineered to match the smooth, vibration-free operation expected of Toyota's flagship executive sedan, this ignition service kit restores factory throttle response, ensures clean cold starts, and prevents unburned fuel from contaminating your catalytic converters.