2024 Toyota Tacoma Spark Plug Type & Gap

Quick reference

Why the right plug matters

Choosing the correct spark plug for your 2024 Toyota Tacoma is crucial for optimal engine performance, fuel efficiency, and longevity. The spark plug is responsible for igniting the air-fuel mixture in the combustion chamber, and an incorrect plug can lead to misfires, reduced power, and even engine damage.

Heat Range

Spark plugs are designed with a specific "heat range," which refers to their ability to dissipate heat. A plug that's too "cold" (dissipates heat too quickly) can foul with carbon deposits, leading to misfires. A plug that's too "hot" (dissipates heat too slowly) can overheat, pre-ignite the fuel, and cause engine damage. Toyota engineers have specified the ideal heat range for your Tacoma's engine, so sticking to the OEM or recommended aftermarket plugs is essential.

Electrode Metal (Iridium vs. Platinum vs. Copper)

• Iridium: The 2024 Toyota Tacoma's 2.4L Turbo engine comes equipped with iridium-tipped spark plugs from the factory. Iridium is an extremely hard and durable metal, allowing for very fine electrodes that produce a strong, consistent spark. These plugs offer excellent longevity and performance, with recommended replacement intervals typically around 60,000 miles.
• Platinum: Platinum spark plugs are a step up from copper, offering better durability and a longer lifespan. While not typically original equipment for modern Toyota engines, they can be an aftermarket option for some applications. They generally last longer than copper but not as long as iridium.
• Copper: Copper spark plugs have excellent conductivity but are less durable than iridium or platinum. They are usually found in older vehicles or those with high-performance applications that require more frequent plug changes. You will not find copper plugs as OEM for your 2024 Tacoma.

How to gap a spark plug

While iridium spark plugs generally come pre-gapped, it's always a good idea to verify the gap before installation. The gap is the distance between the center and ground electrodes. An incorrect gap can lead to poor ignition, misfires, and reduced engine power.

1. Use the correct tool: Only use a wire-type spark plug gapping tool for iridium plugs. Avoid coin-style gappers, as they can damage the fine iridium tip.
2. Measure the gap: Carefully slide the gapping tool into the gap. It should offer slight resistance. If the gap is incorrect, you'll need to adjust it.
3. Adjusting the gap: To increase the gap, gently bend the ground electrode away from the center electrode using the adjustment tool on the gapper. To decrease the gap, gently tap the ground electrode on a clean, hard surface. Be extremely careful not to touch or damage the iridium center electrode.

Replacement procedure tips

The 2024 Toyota Tacoma utilizes a coil-on-plug (COP) ignition system, meaning each spark plug has its own ignition coil directly mounted on top of it. This eliminates the need for spark plug wires.

1. Safety first: Always ensure the engine is cool before starting. Disconnect the negative terminal of the battery to prevent accidental electrical issues.
2. Accessing the plugs: The ignition coils are typically held in place by a single bolt. Carefully disconnect the electrical connector from each coil and then remove the bolt. Gently twist and pull the coil straight up to remove it from the spark plug well.
3. Anti-seize debate: There is ongoing debate about using anti-seize on spark plug threads. For modern spark plugs with nickel-plated shells, manufacturers like NGK and Denso generally advise against anti-seize, as it can alter torque readings and potentially lead to over-tightening or thread damage. Follow the spark plug manufacturer's recommendations. Toyota itself also often advises against it.
4. Dielectric grease: Apply a small amount of dielectric grease inside the boot of the ignition coil where it contacts the spark plug's ceramic insulator. This helps seal out moisture, prevents corrosion, and makes future removal easier. Do not apply dielectric grease to the spark plug threads.
5. Torque matters: Always use a torque wrench to tighten the new spark plugs to the manufacturer's specified torque. Over-tightening can damage the spark plug and the cylinder head threads, while under-tightening can lead to compression loss and spark plug ejection.

Known issues

At present, there are no widespread or commonly known issues related to spark plugs or the ignition system specifically with the 2024 Toyota Tacoma. This engine is relatively new, but the 2.4L Turbo (2TR-FTE) is a robust design. As with any vehicle, it