A-Premium Double Iridium Spark Plugs Pack of 4 for L4 Engines — Fine-Wire, OEM Fit

A-Premium Double Iridium Spark Plugs Pack of 4 are high-performance, fine-wire ignition plugs engineered for L4 engines to deliver reliable spark, long service life, and direct OEM-compatible fitment.

These double iridium plugs are built to meet tight OEM tolerances and are specified for many Toyota and Lexus L4 gasoline and hybrid engines. The design focuses on consistent ignitability and durability: iridium tips on both the center electrode and core give improved wear resistance and a stable gap over extended mileage. This pack of four is intended as a direct-replacement option for models such as Toyota Camry, RAV4, Corolla, Highlander, Avalon and Lexus ES300h and UX250h for the years listed in the fitment information.

Which vehicles and engines are these plugs compatible with?

These spark plugs are matched to a range of Toyota and Lexus 4-cylinder engines, including gas and hybrid variations that share the same ignition specifications. Verify your vehicle’s year, engine code, and OEM reference number before purchase to ensure correct fitment.

• Fits Lexus ES300h 2019–2020 (L4 2.5L) and UX250h 2019–2020 (L4 2.0L FHEV)
• Compatible with Toyota Avalon 2019–2020, Camry 2018–2020 (L4 2.5L)
• Also fits Corolla 2019–2020 L4 1.8L/1.8L GAS, Highlander 2020 L4 2.5L, RAV4 2019–2020 L4 2.5L
• Reference numbers: A-Premium fits 96210, DILKAR6T8

How do double iridium electrodes affect engine performance?

Double iridium electrodes improve ignition reliability and maintain a precise spark gap for longer than conventional plugs. That steady spark timing supports consistent combustion, smoother idle and better throttle response without changing ignition system components.

• Iridium center electrode tip and core resist wear for prolonged service life
• Fine-wire design reduces voltage demand from the ignition coil
• Stable 0.032 in gap supports repeatable spark events under load

When should I replace these spark plugs?

Double iridium plugs are designed for extended intervals compared with standard copper plugs; recommended replacement typically falls in the high mileage range. Follow your vehicle manufacturer’s maintenance schedule and inspect plugs if you notice rough running, misfires or decreased fuel economy.

• Suggested replacement window: roughly 100,000–120,000 miles under normal conditions
• Check earlier if the engine shows misfire codes, hard starting, or increased fuel consumption
• Always gap and torque to OEM specs during installation for best performance

Are these spark plugs an exact replacement for OEM parts?

These A-Premium plugs are engineered to match OEM dimensions and performance characteristics for the specified reference numbers and vehicle models. They are intended as a direct-fit aftermarket alternative when the reference numbers, gap size and thread dimensions correspond to your original equipment.

• Manufactured to OEM-style tolerances for fit and sealing
• Pre-set gap: 0.032 inches; confirm before installation
• Sold as a pack of four for typical 4-cylinder ignition banks

Who is this for: This pack is suited to vehicle owners and independent mechanics who need a long-life, OEM-compatible spark plug solution for 4-cylinder Toyota and Lexus gas or hybrid engines. It works well for routine maintenance, high-mileage restorations, or preventative replacement when seeking improved ignition stability and fewer service intervals compared with conventional plugs. Confirm compatibility using your vehicle year, engine size and the reference numbers provided before ordering.