Ignition Coil & Iridium Spark Plugs for Toyota Tundra (2007-2020) 4.6L 5.7L V8

Reliable Ignition Coil & Iridium Spark Plugs for 2007-2020 Toyota Tundra

Restores peak combustion efficiency: This direct-replacement ignition coil and iridium spark plug set eliminates misfires and stabilizes idle in the 1UR-FE and 3UR-FE V8 engines.

The Stock Tundra Ignition Degradation

The OEM ignition system on the XK50 Tundra is prone to degradation over high mileage, primarily due to thermal cycling and prolonged heat soak within the deep V8 cylinder banks. Factory coils eventually suffer from primary winding breakdown and cracked epoxy housings, leading to voltage leaks and weak spark propagation. Simultaneously, standard plugs experience rapid electrode erosion under heavy towing loads. This degradation manifests as rough idling, reduced fuel economy, hesitation under load, and cylinder-specific misfire codes (P0300 through P0308) which severely cripple the towing capability of the naturally aspirated V8 platform.

The Engineering Solution

This comprehensive ignition kit pairs high-output ignition coils with pre-gapped iridium spark plugs to provide a robust, long-term fix. The replacement coils are wound with premium heavy-gauge copper wiring and encapsulated in high-dielectric epoxy resin to resist extreme under-hood temperatures and prevent voltage flash-over. The accompanying spark plugs utilize an ultra-fine iridium center electrode combined with a laser-welded ground electrode, ensuring a concentrated, consistent spark that maximizes flame kernel expansion. This precise combustion event restores the stoichiometric efficiency of the 4.6L and 5.7L engines, stabilizing idle, eliminating hesitation, and optimizing power delivery when hauling heavy payloads.

Technical Specifications

Compatibility

• 2007-2020 Toyota Tundra 4.6L V8 (1UR-FE)
• 2007-2020 Toyota Tundra 5.7L V8 (3UR-FE)

The Toyota Towing Standard

Built for the grueling demands of heavy hauling and off-road recovery, these ignition components restore the legendary durability and pulling power expected from Toyota's UR V8 platform.