A Guide to Aftermarket Spark Plugs for the 2006-2017 Toyota Tacoma
Keep your Tacoma's V6 or 4-cylinder engine running strong by choosing the right spark plugs.
- Your 2006-2017 Tacoma was factory-equipped with long-life Iridium spark plugs.
- Denso and NGK are the original equipment (OEM) brands; using their aftermarket Iridium plugs is the most reliable choice.
- While Iridium plugs can last up to 100,000 miles, check your maintenance schedule, as replacement may be recommended sooner (30k-60k miles) under certain conditions.
- Do not use anti-seize compound on new Denso or NGK plugs, as their threads are already coated.
Symptoms of Failing Spark Plugs in a Tacoma
When your spark plugs are wearing out, your truck will usually let you know. The signs can be subtle at first but will get worse over time. Common symptoms include a rough idle, where the engine shakes or vibrates more than usual when you're stopped. You might also notice your truck feels sluggish and doesn't accelerate as quickly as it used to. A drop in gas mileage is another common sign, as worn plugs can't burn fuel efficiently. If the problem is more severe, the "Check Engine" light may come on, often with codes indicating an engine misfire (P0300-P0306).
Choosing the Right Aftermarket Spark Plugs
When it comes to spark plugs for the 2006-2017 Tacoma, you have good options in the aftermarket. Toyota used high-quality Iridium spark plugs from Denso and NGK in these trucks from the factory. This is one area where aftermarket parts from the original equipment manufacturer (OEM) are readily available and offer the same quality as the dealer part.
Brand Quality Tiers for Toyota Tacoma
| Tier | Brands | Assessment |
|---|---|---|
| Top Tier / OEM Equivalent | Denso, NGK | These are the original suppliers for Toyota. Their Iridium plugs offer the best performance and longest life, often up to 100,000 miles. Many Tacoma owners agree that sticking with Denso or NGK is the most reliable choice. |
| Mid-Tier / Performance | Bosch | Bosch offers quality Iridium and platinum spark plugs that are a good alternative. They are a reputable brand, though not the original supplier for this specific vehicle. They can be a solid choice if OEM brands are unavailable. |
| Economy Tier | Autolite, Champion | These brands provide a more budget-friendly option. While they will function, they may not offer the same longevity or performance as the Iridium plugs your Tacoma was designed for. They are better suited for older vehicles or if you plan on changing plugs more frequently. |
Pro Tip: The 4.0L V6 engine in some Tacomas 🎬 Watch this step-by-step spark plug replacement for the V6 engine. was famously built with Denso plugs on one side of the engine and NGK plugs on the other. Both are considered OEM and are completely interchangeable. The most important thing is to use Iridium plugs from one of these two brands for best results.
Known Issues, Recalls, and TSBs
The 2006-2017 Toyota Tacoma has not had any major recalls specifically for spark plugs. However, a Technical Service Bulletin (TSB-0044-14) was issued for some 2012–2014 Tacomas with the 1GR-FE V6 engine that experienced a spark knock or detonation sound in hot weather. This issue was resolved with an update to the engine's computer software, not by replacing the spark plugs themselves. There are no widespread, known defects related to the spark plugs on these trucks.
Frequently Asked Questions (FAQ)
How often should I replace the spark plugs on my Tacoma?
The replacement interval depends on the type of plug. The factory-installed Iridium plugs can last up to 100,000 or even 120,000 miles. However, some maintenance schedules recommend a check or replacement every 30,000 to 60,000 miles, especially if you tow frequently or use your truck for heavy-duty work. If you use standard copper plugs, you should replace them every 30,000 miles.
🎬 See how to change spark plugs on the 2.7L 4-cylinder engine.What is the correct spark plug gap for a 2006-2017 Tacoma?
The recommended spark plug gap is generally between 1.0 mm and 1.1 mm (0.039 to 0.043 inches). Even though many Iridium plugs come "pre-gapped," it is crucial to check the gap on each plug before installation to ensure it matches the specification for your engine. However, be very careful, as the Iridium tip is fragile.
🎬 Learn how to safely gap Iridium plugs without damaging them.Should I use anti-seize on my Tacoma's spark plugs?
This is a debated topic. NGK and Denso state that their modern plugs have a special trivalent coating that acts as an anti-seize, so no additional compound is needed. Adding anti-seize can change the torque reading, leading you to over-tighten the plug and potentially damage the engine's cylinder head. It is generally recommended to install new NGK or Denso plugs dry, to the correct torque specification (typically around 15 ft-lbs).
What's the difference between Iridium and Platinum plugs?
Iridium is a harder, more durable precious metal than platinum. Iridium spark plugs maintain a precise gap for longer and resist wear better, which is why they have a longer service life. Your Tacoma's engine was designed for Iridium plugs, and using them is the best way to maintain original performance and reliability.
Helpful Videos
Technical Specifications
OEM Part Numbers: 90919-01235 90919-01191 SK20HR11 ILFR6T11 K20HR-U11
Recommended Material: Iridium. Recommended Gap: 1.0mm - 1.1mm (0.039" - 0.043"). Torque Specification: Approx. 15 ft-lbs.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Toyota Tacoma: