Spark Plugs

Toyota Genuine Spark Plugs:
A dirty, worn out or inferior spark plug can cause inconsistent firing, which may result in reduced performance and fuel economy. Toyota offers a variety of replacement spark plugs designed specifically for your vehicle’s engine, including U-Groove, Dual-Ground Electrode, Double Platinum and even Iridium spark plugs.

Below are descriptions and benefits of these spark plugs. Be sure to use the correct spark plug for your Toyota engine; the wrong spark plug can negatively affect fuel economy and overall performance.

U-Groove Spark Plugs:
As its name implies, the U-Groove design incorporates a U-shaped groove in the middle of the ground electrode. Before the spark plug fires, the U-Groove traps the fuel-air mixture, then produces a large spark for efficient combustion and reduced fouling. U-Groove spark plugs meet original equipment replacement intervals and original specifications on your Toyota.

Dual-Ground Electrode Spark Plugs:
Select Toyota models feature the distributor-less Toyota Direct Ignition System (TDI). Introduced in 1994, this system promotes greater combustion efficiency by firing the spark plugs twice as often as a standard ignition. With that in mind, the ideal spark plug for TDI-equipped Toyotas is the Dual-Ground Electrode design, which delivers optimum performance and durability while maintaining the original recommended change interval.

Double Platinum Spark Plugs:
Genuine Toyota Double Platinum spark plugs, available for select Toyota models, offer several benefits:
Platinum on both the center and ground electrodes reduces wear and provides a service life of up to 60,000 miles.
Raised design provides excellent ignitability for a strong spark, smooth idle and optimum performance.
Platinum material also incorporates nickel and iridium, resulting in a stronger, more durable alloy that resists cracking.

Iridium Spark Plugs:
Iridium spark plugs, available for select Toyota models, have several benefits:
Smaller center electrode promotes higher firing performance.
Iridium is a more durable material than platinum (its melting point is approximately 1200°F higher than platinum).
Iridium spark plugs last longer than conventional spark plugs-up to 110,000 miles.

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