If you’re looking to upgrade or replace the spark plugs on your 2017 Toyota Tacoma, you want reliable options that match your engine and driving needs. I’ll outline top picks—from OEM-style Denso Iridium to budget Champion copper. They cover fitment details, lifespan, and simple installation tips so you can pick the right set and avoid common mistakes. Keep going to find the best match for your Tacoma’s 2.7L or 3.5L V6.
Denso Iridium TT Spark Plugs for Toyota Tacoma 3.5L V6 (6 pc)
If you drive a 2016–2017 Toyota Tacoma with the 3.5L V6 and want long-lasting, factory-level performance, the Denso Iridium TT 6‑pack is a smart pick. Its 0.4 mm iridium center and 0.7 mm platinum ground twin‑tip design boosts ignition reliability. It reduces misfires and emissions. It closely matches OEM specs for a direct, dependable swap. You’ll get genuine DENSO quality (M14x1.25 thread, SK687040) with a 0.040″ gap and vehicle-specific fit.
Best For: Drivers of 2016–2017 Toyota Tacoma trucks with the 3.5L V6 who want a long-lasting, OEM-equivalent spark plug upgrade for improved ignition reliability and reduced misfires.
Pros:
- Genuine DENSO Iridium TT twin‑tip design (0.4 mm iridium center, 0.7 mm platinum ground) for better ignition, improved combustion efficiency, and fewer misfires.
- Vehicle‑specific fit (M14x1.25, SK687040) with OEM-equivalent 0.040″ gap for simple direct replacement.
- Strong reliability and brand reputation (Deming Award, J.D. Power supplier awards) with high customer rating (4.6/5).
Cons:
- Premium spark plugs cost more than standard copper or nickel options.
- Listed for 2016–2017 Tacoma 3.5L V6 only; not universal across other model years/engines.
- Six‑pack may be excess if you only need to replace fewer plugs immediately.
DENSO Iridium TT Spark Plugs for Toyota Tacoma 2.7L (2005–2017)
Drivers who want a direct-fit, long-lasting upgrade will like the DENSO Iridium TT set for the 2.7L Tacoma. Its twin-tip design and 1.1mm platinum center electrode deliver a stronger spark for better throttle response and improved fuel economy. You get a four-piece set with a 0.040-inch gap, M14x1.25 threads, and OEM part number 4056321275 for 2005–2017 2.7L L4 Tacomas. The platinum core and titanium-enhanced ground electrode maximize spark energy and efficiency. Check Amazon Confirmed Fit before ordering.
Best For: Drivers of 2005–2017 Toyota Tacoma 2.7L (L4) who want a direct-fit, long-lasting spark plug upgrade for improved throttle response and fuel economy.
Pros:
- Twin-tip iridium/platinum design delivers a stronger, more efficient spark for better performance and fuel economy.
- Direct-fit (M14x1.25, OEM PN 4056321275) simplifies installation with correct 0.040″ gap out of the box.
- High-quality materials (1.1mm platinum center, titanium-enhanced ground) for extended service life.
Cons:
- Sold as a four-piece set only—may be unnecessary for partial repairs or single-plug replacements.
- Higher cost than standard copper plugs due to iridium/platinum construction.
- Limited reviews (17) and modest bestseller rank may provide less user feedback than more common options.
6 pc Champion Copper Plus Spark Plugs for Toyota Tacoma 3.5L V6 (2016-2020)
For Tacoma owners who want a dependable, budget-friendly upgrade, the 6 pc Champion Copper Plus set delivers reliable ignition and straightforward fitment for the 3.5L V6 (2016–2020). You’ll get genuine Champion parts designed for long-lasting, powerful performance with durable precious metals that help reduce wear. Champion’s racing pedigree and OE manufacturing expertise mean the plugs meet strict industry standards for fit and lifespan. These are direct replacements in original packaging. Confirm fitment via Amazon Confirmed Fit.
Best For: Tacoma owners with the 3.5L V6 (2016–2020) seeking a dependable, budget-friendly OEM-replacement spark plug.
Pros:
- Genuine Champion parts engineered for reliable ignition and straightforward, direct fit replacement.
- Durable precious-metal construction designed to reduce wear and extend plug life.
- Backed by Champion’s racing pedigree and OE manufacturing standards for consistent performance.
Cons:
- Copper-plus design may require more frequent replacement than platinum or iridium alternatives.
- Limited to specific Tacoma 3.5L V6 model years (2016–2020) — not universal across other engines.
- Performance gains are primarily durability and reliability rather than high-end performance improvements.
6 pc E3 Spark Plugs compatible with Toyota Tacoma 3.5L 4.0L V6 2005-2022
If you want better throttle response and improved fuel economy without changing your ignition system, the 6 pc E3 spark plugs are a direct-fit option for Tacoma 3.5L and 4.0L V6 engines (2005–2022). They use E3’s DiamondFIRE edge-to-edge spark design to concentrate spark energy and reduce carbon buildup. You’ll get a direct replacement set with original packaging. Confirm fitment via Amazon Confirmed Fit. The DiamondFIRE path and diamond fine electrode improve ignitability, quick starts, and longevity.
Best For: drivers of Toyota Tacoma 3.5L or 4.0L V6 (2005–2022) who want a direct-fit spark plug upgrade to improve throttle response and fuel economy without changing their ignition system.
Pros:
- Direct replacement fit for Tacoma 3.5L and 4.0L V6 (2005–2022) with original packaging and Amazon Confirmed Fit.
- DiamondFIRE edge-to-edge spark design and diamond fine electrode improve ignitability, quick starts, and reduce carbon buildup.
- Copper core and ceramic top enhance heat transfer and durability, potentially increasing power and fuel efficiency.
Cons:
- May not provide significant benefits on poorly maintained or mechanically limited engines.
- Not a plug-and-play performance gain for all users; results can vary by driving conditions and vehicle condition.
- Some users may prefer iridium or platinum plugs for longer service intervals depending on driving habits.
Autolite Platinum Spark Plugs (6 pc) for Toyota Tacoma 3.5L / 4.0L V6 2005-2019
Autolite’s 6-piece platinum set works well when you want durable, OE-style replacements that keep your Tacoma’s V6 running clean and efficient. You’ll get six direct-fit plugs for 2005–2019 Tacoma 3.5L and 4.0L V6 engines, shipped in original packaging. The necked-down center electrode delivers quicker, cleaner firing. Platinum-to-platinum construction and a yttrium-enhanced ground electrode improve heat transfer and durability. Autolite’s high-nickel alloy side electrode maintains gap precision with minimal erosion.
Best For: Owners of 2005–2019 Toyota Tacoma with 3.5L or 4.0L V6 engines who want durable, OE-style replacement spark plugs that improve ignition efficiency and longevity.
Pros:
- Direct-fit, original-packaging replacement plugs designed specifically for 2005–2019 Tacoma 3.5L/4.0L V6 — easy swap with confirmed fit.
- Platinum-to-platinum construction and yttrium-enhanced ground electrode offer improved heat transfer, durability, and longer service intervals.
- Necked-down center electrode and high-nickel alloy side electrode promote quicker, cleaner firing and help maintain fuel economy.
Cons:
- Platinum plugs generally last less than iridium alternatives, so may require more frequent replacement than premium iridium options.
- Limited to 3.5L and 4.0L V6 Tacoma models (2005–2019) — not suitable for other engines or vehicles.
- Depending on driving conditions, some users may prefer OEM or higher-end performance plugs for extreme use or tuning.
6 pc Champion Iridium Spark Plugs for Toyota Tacoma 3.5L V6 (2016-2020)
For Tacoma owners who want a durable, race-proven upgrade, the 6 pc Champion Iridium spark plugs deliver reliable ignition and longer service life for the 3.5L V6 (2016–2020). You’ll get genuine Champion parts engineered with precious metals that resist wear and maintain consistent spark energy. They improve throttle response and combustion efficiency. Champion’s racing pedigree and OE manufacturing experience mean these plugs meet strict fit and durability standards. They’re direct replacements in original packaging.
Best For: Tacoma 3.5L V6 (2016–2020) owners seeking a durable, low-maintenance ignition upgrade with OEM fit and race-proven reliability.
Pros:
- Genuine Champion iridium construction offers improved wear resistance and longer service intervals.
- Direct replacement fit and original packaging simplify installation and ensure compatibility (confirm with Amazon Fit tool).
- Backed by Champion’s racing pedigree and OE manufacturing expertise for consistent performance and reliability.
Cons:
- Higher cost than standard copper or platinum plugs.
- May provide only modest real-world gains for lightly modified or low-mileage engines.
- Requires purchase of a full 6-piece set even if only some cylinders need replacement.
SCITOO Double Iridium Spark Plugs for Toyota Tacoma 2016-2020 & Hyundai/Genesis Coupe 2010-2012 (Pack of 4)
Choose the SCITOO Double Iridium spark plugs if you want a direct-fit, long-lasting replacement that’s tuned for Tacoma engines from 2016–2020. It also fits certain Hyundai Genesis Coupe models. Their iridium alloy provides more reliable starts and steadier idle performance. You’ll get a pack of four compatible with 2.0L and 2.7L engines, replacing part numbers 97293 and DILFR6D8D. Iridium electrodes promote faster ignition and consistent combustion. Installation is a simple drop-in with OE-spec dimensions.
Best For: drivers of Toyota Tacoma (2016–2020) or Hyundai/Genesis Coupe (2010–2012) with 2.0L or 2.7L engines who want a direct-fit, long-lasting replacement spark plug.
Pros:
- Direct drop-in fit to OE specifications for easy installation (no modifications needed).
- Iridium alloy electrodes offer reliable starts, stable idle, and faster ignition.
- Pack of four covers all cylinders for complete replacement; replaces part numbers 97293 and DILFR6D8D.
Cons:
- Compatibility limited to specific Toyota Tacoma and Hyundai/Genesis Coupe years and engine sizes; not universal.
- Aftermarket brand (SCITOO) — not an OEM part, which may concern some buyers seeking factory-branded components.
- No additional accessories (e.g., anti-seize or torque guide) included; proper installation tools and torque settings required.
Autolite Iridium XP Spark Plugs (6 pc) for Toyota Tacoma 3.5L/4.0L V6 2005–2019
If you want near-OE reliability with long service life, the Autolite Iridium XP six-pack is a strong pick for Tacoma owners with the 3.5L or 4.0L V6. You’ll get six direct-fit plugs covering 2005–2019 models, sold in original Autolite packaging. The 0.6mm finewire iridium center tip and laser-welded construction boost ignitability and fuel efficiency. The platinum-protected, V-trimmed ground electrode improves performance across ignition systems. Autolite’s been making OE replacements since 1936, and these plugs are engineered for up to 100,000 miles.
Best For: Tacoma owners with 3.5L or 4.0L V6 engines (2005–2019) who want near-OE reliability and long-lasting, high-efficiency spark plugs.
Pros:
- Direct-fit replacement in original Autolite packaging — easy install and correct fit for 2005–2019 Tacoma V6 models.
- Iridium 0.6mm finewire center tip with laser-welded construction and V-trimmed, platinum-protected ground electrode for improved ignitability and fuel efficiency.
- Engineered durability up to 100,000 miles, offering long service intervals and reduced maintenance frequency.
Cons:
- Higher upfront cost than standard copper or single-platinum plugs.
- Requires confirming fitment (e.g., Amazon Confirmed Fit) before ordering to avoid compatibility issues.
- Performance gains may be modest on older or heavily modified engines compared with stock ignition limitations.
A-Premium Double Iridium Spark Plugs for Toyota Tacoma (2016–2020) & Hyundai Genesis Coupe (2010–2012), Pack of 4
The A-Premium Double Iridium set works well for Tacoma owners who want long-lasting, OEM-spec ignition performance without frequent replacements. You’ll get a pack of four plugs engineered for exceptional ignitability and maximum ignition performance. They match Toyota Tacoma 2016–2020 L4 2.7L fitment (and Hyundai Genesis Coupe 2010–2012 L4 2.0L). Each plug features iridium center electrode tip and core, 5000-ohm resistance, 0.032-inch gap, and the listed dimensions. Replace them every 100,000–120,000 miles to maintain ideal engine performance and longevity.
Best For: Tacoma and Genesis Coupe owners seeking long-lasting, OEM-spec replacement spark plugs with excellent ignitability and minimal maintenance.
Pros:
- Durable double iridium center electrode and core for extended lifespan (recommended replacement every 100,000–120,000 miles).
- Engineered to OEM specifications for reliable fit and maximum ignition performance (fits Toyota Tacoma 2016–2020 L4 2.7L and Hyundai Genesis Coupe 2010–2012 L4 2.0L).
- Includes precise specs favorable for installation and performance: 0.032″ gap, 14.00 mm thread diameter, 5/8″ hex, 50.50 mm insulator height, 26.50 mm reach, 5000-ohm resistance.
Cons:
- Pack of 4 may not cover engines requiring more than four spark plugs without purchasing additional packs.
- Higher upfront cost compared with conventional copper or platinum plugs (offset by longer service interval).
- Specific fitment limited to listed models/engines—may not be suitable for other years or engine types.
Factors to Consider When Choosing Spark Plugs For 2017 Toyota Tacoma
Before you pick replacements, make sure the plugs match your Tacoma’s engine and the correct heat range. That way they run at the right temperature. Check electrode material and gap size because those affect spark strength, efficiency, and fuel economy. Finally, consider expected longevity and mileage so you balance cost with how often you’ll need to change them.
Engine Compatibility Check
Start by confirming which engine you have—either the 3.5L V6 or the 2.7L L4. Each requires specific plug types and heat ranges to run correctly. Once you know, check the manufacturer’s specs for thread size (M14x1.25 for both engines) so the plugs seat properly. Verify the recommended gap—typically 0.040 inches—to guarantee reliable ignition and fuel efficiency. Make certain replacement plugs meet or exceed OEM specifications to preserve engine performance and longevity.
Electrode Material Type
Once you’ve confirmed engine specs and gap requirements, pick an electrode material that matches your driving needs and maintenance preferences. Choose iridium if you want maximum durability and long service intervals—iridium plugs can last 100,000 miles or more and resist wear under heavy use. Opt for platinum for a solid middle ground: better longevity than copper with dependable performance, typically 60,000–100,000 miles. Go with copper only if you prioritize raw conductivity and lower cost, but be prepared to replace plugs every 20,000–40,000 miles.
Heat Range Selection
When choosing spark plugs for your 2017 Tacoma, match the heat range to how you drive and what’s been done to the engine. Too cold a plug leads to fouling and rough running, while too hot raises the risk of pre-ignition and engine damage. The heat range indicates how quickly a plug sheds combustion heat. Select one that keeps the tip hot enough to self-clean but cool enough to avoid detonation. Use the manufacturer’s recommended range as a baseline.
Gap Size Importance
Although small, the spark plug gap plays a big role in your Tacoma’s ignition. The correct gap delivers a strong, consistent spark for efficient combustion. A gap that’s too wide causes misfires and a gap that’s too narrow leads to weak combustion and higher emissions. You should aim for the manufacturer-recommended gap—many plugs use 0.040 inches as a reliable baseline. Check the spec for the specific plug you buy and adjust it before installation.
Longevity and Mileage
Now that you’ve set the correct gap, think about how long the plugs will actually last in your Tacoma and how mileage affects replacement timing. Most spark plugs are rated for 80,000–100,000 miles, but material matters. Iridium plugs usually exceed 100,000 miles because they resist heat and wear better than copper. The finer center electrode on iridium improves ignitability and extends service life versus thicker electrodes. Plan replacements around the manufacturer’s interval but adjust based on driving conditions.
Fuel Efficiency Impact
Your Tacoma’s spark plugs play a direct role in how completely fuel burns. Choosing the right type can measurably affect gas mileage. You’ll benefit from finer center electrodes like iridium tips, which improve ignitability and reduce fuel consumption by producing a stronger, more consistent spark. Keep plugs properly gapped — around 0.040 inches for many vehicles — so combustion stays ideal. Replace worn plugs on schedule to prevent power loss and maintain peak efficiency.
Installation and Torque
When installing spark plugs on your 2017 Tacoma, pay close attention to gap, thread prep, and torque. Set the gap to the manufacturer’s spec (commonly about 0.040″). Clean the cylinder head threads, and use a torque wrench to tighten plugs to roughly 12–15 ft‑lbs. Apply a light anti‑seize only if the plugs aren’t pre‑coated. Install each plug straight and start by hand to avoid cross‑threading. Over‑ or under‑torquing can strip the head or damage the plug.
Frequently Asked Questions
Can I Use Colder or Hotter Spark Plugs for Towing or Heavy Loads?
You can use slightly colder plugs for towing to prevent pre-ignition under heavy loads. But don’t go too cold. Follow your engine’s spec and avoid extreme changes that could cause fouling or reduced performance.
How Often Should I Gap Aftermarket Iridium Plugs for Tacoma Engines?
You should gap aftermarket iridium plugs before installation and recheck every 12,000–24,000 miles or whenever you change plugs. Do this after heavy towing or if you see misfires. Use a feeler gauge and avoid over-bending electrodes.
Do Aftermarket Plugs Affect My Tacoma’s Warranty Coverage?
Aftermarket plugs can affect your Tacoma’s warranty only if they cause damage. If plugs don’t cause failure, manufacturers can’t deny unrelated warranty claims. Keep records.
Can Plug Choice Improve Fuel Economy on the 2017 Tacoma?
Yes — choosing the right spark plugs can improve your Tacoma’s fuel economy slightly. You’ll get better combustion, reduced misfires, and ideal gap maintenance. But expect modest gains. Driving habits and maintenance matter more overall.
Are Plug Wires or Ignition Coils Different for 2017 Tacoma V6?
Yes — your 2017 Tacoma V6 uses individual ignition coils on each spark plug rather than traditional plug wires. You’ll replace coil-on-plug units when needed. They’re specific to the engine and shouldn’t be interchanged indiscriminately.
Conclusion
You’ve seen top picks from iridium performance to budget copper. Now pick plugs that match your driving and maintenance goals. Want long, trouble-free starts and better fuel burn or just a cheap, reliable swap? Choose correct thread and gap. Favor iridium for durability over 80,000 miles, and confirm fit before buying. Install carefully or get a pro if unsure. Then enjoy smoother idling and improved throttle response.
