Best Spark Plugs For 3Rd Gen Tacoma

#1 · Best Overall

1. Champion Iridium

• Core Material: Iridium
• Top Material Type: Metal
• Compatible with Vehicle Type: Truck
• Thread Size: 10mm

Best for: 2016–20 3.5L V6 owners.

Why it ranks #1: The six-plug listing explicitly fits the Tacoma 3.5L V6 across the broadest stated model-year span among the matched V6 options.

Champion Iridium fitment for 2016–20 Tacoma 3.5L V6 models is the central strength of this six-plug set. Its listed 0.031-inch gap and iridium core add useful specifics for owners comparing replacements, while Champion describes its ignition parts as supporting long-lasting, powerful performance.

The six-piece quantity suits the listed 3.5L V6 application, and the stated 0.031-inch gap gives buyers an installation-related specification to compare against their needs. Champion describes its plugs as using durable precious metals and says its ignition parts support long-lasting, powerful performance. The Tacoma years named are 2016–20, making this a more directly targeted listing for those models than the supplied 4.0L V6 sets for older Tacomas.

Skip it if you own a 2021–22 Tacoma V6; Sixity Auto’s E3 set lists Tacoma V6 fitment through 2022.

This Champion set fits the stated needs of 2016–20 Tacoma 3.5L V6 owners looking for six iridium plugs with a specified gap. Its supplied Tacoma coverage ends in 2020, so later models fall outside that range.

Listed on Amazon as: 6 pc Champion Iridium Spark Plugs for Toyota Tacoma 3.5L V6 2016-20

#2 · Twin-Tip Design

2. DENSO Iridium TT

• Core Material: Iridium
• Top Material Type: Iridium
• Compatible with Vehicle Type: Car, Truck
• Thread Size: M14x1.25

Best for: 2016–17 3.5L V6 owners.

Why it ranks #2: This six-plug DENSO set explicitly fits the Tacoma 3.5L V6 and lists a 0.040-inch gap plus iridium and platinum twin-tip construction.

Twin-tip iridium-and-platinum construction gives this six-plug DENSO set its clearest distinction, pairing a 0.4 mm iridium center with a 0.7 mm platinum tip. The listing specifically identifies 2016 Tacoma 3.5L V6 fitment, making it a targeted option for owners seeking a full-engine replacement set.

The six-piece quantity covers the listed V6 application, while the stated 0.040-inch gap gives buyers a concrete specification to compare with their service requirements. DENSO’s description connects its plug design with complete fuel ignition and fewer erratic starts associated with poor mixtures or fouling. The twin-tip materials distinguish this set from a basic plug listing, but the supplied fitment is narrow: 2016 Tacoma 3.5L V6 is the explicitly named application.

Skip it if you own a 4.0L Tacoma; the NGK Iridium IX set is listed for 2005–15 4.0L V6 models.

For a 2016 Tacoma 3.5L V6 owner replacing the full set, this DENSO twin-tip option combines a named application with specified electrode materials. Its listed Tacoma coverage does not extend beyond 2016.

Listed on Amazon as: 6 pc DENSO Iridium TT Spark Plugs for Toyota Tacoma 3.5L V6 2016-17

#3 · Long-Life Electrode

3. DENSO Iridium Long Life

• Core Material: Platinum
• Top Material Type: iridium
• Compatible with Vehicle Type: Car, Truck
• Thread Size: M14x1.25

Best for: 2016–17 DENSO long-life buyers.

Why it ranks #3: The six-plug set is listed for the Tacoma 3.5L V6 and specifies a 0.4mm iridium center electrode with a 0.7mm platinum ground electrode.

A fine-wire 0.4 mm iridium center electrode paired with a 0.7 mm platinum ground electrode gives this DENSO long-life set its defining construction. The six plugs are listed for 2016–17 Tacoma 3.5L V6 models, with DENSO connecting its larger spark to power and fuel-economy benefits.

The six-piece quantity serves the specified Tacoma V6 application, while the iridium center and platinum ground electrode distinguish the plug construction. DENSO describes a larger spark as translating to more power and superior fuel economy, tying its stated benefits to the electrode design. The product listing names only 2016 and 2017 Tacoma 3.5L V6 models, and gives a 0.032-inch gap in the additional description, so the year and engine range are important boundaries.

Skip it if you own a 2018–20 3.5L V6; Sixity Auto’s Champion Iridium set lists those Tacoma model years.

This DENSO set suits 2016–17 Tacoma 3.5L V6 owners seeking six plugs with specified iridium and platinum electrodes. Its stated Tacoma range is narrow, so later third-generation model years are outside the supplied fitment.

Listed on Amazon as: 6 pc DENSO Iridium Long Life Spark Plugs for Toyota Tacoma 3.5L V6 2016-17

#4 · 2.7L Four-Cylinder

4. WJAUTO Iridium

• Core Material: Iridium
• Top Material Type: Iridium
• Compatible with Vehicle Type: Car

Best for: 2.7L four-cylinder owners.

Why it ranks #4: This four-plug iridium set explicitly lists Tacoma 2.7L L4 compatibility, making it the clearest choice in this group for that engine.

Pre-gapped construction and a four-plug quantity make this WJAUTO set a distinct option for Tacoma owners with the specifically listed 2.7L L4. Its compatibility details name 2005–23 Tacoma 2.7L L4 models, separating it from six-plug sets aimed at Tacoma V6 engines.

The listing calls these iridium plugs pre-gapped, which can simplify preparation before installation, and identifies a four-piece pack suited to the named L4 application. Its Tacoma fitment covers 2005–23 2.7L L4 models, while the product also lists several other Toyota and Scion vehicles. Those engine details matter more than the broad vehicle list: this is not the listed choice for a Tacoma V6, and the supplied specifications provide no Tacoma V6 application.

Skip it if you drive a 3.5L V6; Sixity Auto’s DENSO Iridium TT set is listed for 2016 Tacoma 3.5L V6 models.

This WJAUTO pack suits owners of the listed Tacoma 2.7L L4 who want iridium plugs supplied pre-gapped in a four-piece set. Its explicit engine fitment is four-cylinder only, so V6 owners should look elsewhere.

Listed on Amazon as: Iridium Spark Plugs 4 Pack, Pre-Gapped OEM Replacement for Toyota 4Runner Camry Corolla Hiace Highlander Hilux Matrix Solara Tacoma Scion xB 2.4L 2.7L L4

#5

5. E3 Spark Plugs

Best for: 2005–22 Tacoma V6 coverage.

Why it ranks #5: The six-plug listing names Tacoma 3.5L and 4.0L V6 applications across a broad span, though its multi-engine fitment warrants careful checking.

A broad 2005–22 Tacoma V6 application is the main draw of this six-pack E3 set, which lists both 3.5L and 4.0L engines. E3’s DiamondFIRE design uses an edge-to-edge spark path to replenish the spark zone with a fresh charge, according to the supplied description.

Six plugs match the listed V6 applications, while the stated 2005–22 coverage spans both 4.0L and 3.5L Tacoma years. E3 says the edge-to-edge DiamondFIRE spark path replenishes the spark zone with a fresh charge, connecting its distinctive geometry to its stated operating purpose. The listing also says the plugs are designed to increase power and reduce fuel consumption and include a resistor to reduce electromagnetic interference, giving buyers several concrete design points to weigh.

Skip it if you want a stated gap and 2016–17 3.5L V6 fitment; Sixity Auto’s DENSO Iridium TT listing provides both.

This E3 set suits Tacoma V6 owners seeking a six-plug option with listed 2005–22 coverage and DiamondFIRE construction. Its supplied specifications omit a gap size, so buyers who need that detail should weigh the listing accordingly.

Listed on Amazon as: 6 pc E3 Spark Plugs compatible with Toyota Tacoma 3.5L 4.0L V6 2005-2022

#6

6. DENSO Iridium Long Life

• Core Material: Platinum
• Top Material Type: iridium
• Compatible with Vehicle Type: Truck
• Thread Size: RM

Best for: 2005–15 4.0L V6 owners.

Why it ranks #6: This six-plug DENSO set explicitly fits Tacoma 4.0L V6 applications, but its stated fitment is for an older generation rather than the target.

DENSO’s fine-wire 0.4 mm iridium center electrode and platinum ground strap distinguish this six-plug long-life set for 2005–15 Tacoma 4.0L V6 models. The listing connects its larger spark with more power and superior fuel economy, giving those older V6 owners a specific DENSO option.

The six-piece pack corresponds to the listed Tacoma V6 application, while the fine-wire iridium center and platinum ground strap provide named electrode details. DENSO says the larger spark translates to more power and superior fuel economy, linking the construction to stated operating benefits. Fitment is specifically listed for 2005–15 Tacoma 4.0L V6 models, so the year and engine range should guide selection rather than the broader description of OE vehicles.

Skip it if you own a 2016–20 3.5L V6; Sixity Auto’s Champion Iridium set lists those Tacoma years and engine.

For owners of a 2005–15 Tacoma 4.0L V6, this DENSO long-life set pairs a six-plug quantity with specified iridium and platinum electrodes. Its listed application does not cover the later 3.5L V6.

Listed on Amazon as: 6 pc DENSO Iridium Long Life Spark Plugs for Toyota Tacoma 4.0L V6 2005-15

#7

7. NGK Iridium IX

• Core Material: Iridium
• Top Material Type: Iridium
• Compatible with Vehicle Type: Car, Truck
• Thread Size: 14mm

Best for: 2005–15 4.0L V6 coverage.

Why it ranks #7: The six-plug NGK set is listed for Tacoma 4.0L V6 applications, but the stated fitment does not cover the third-generation use case.

A six-plug NGK Iridium IX set explicitly listed for 2005–15 Tacoma 4.0L V6 models makes broad year coverage its strongest practical feature. Its iridium construction and 0.04-inch stated gap give owners useful details when selecting a replacement set for that older V6 application.

The six-piece quantity suits the listed V6 application, and the 14 mm thread specification provides a concrete installation detail. NGK describes this plug as helping reduce emissions and misfires while supporting performance and fuel economy, linking the product’s stated operating benefits to everyday engine use. Its Tacoma fitment is specifically the 4.0L V6 from 2005 through 2015, so it is not the listing to choose for a 3.5L third-generation truck.

Skip it if you have a 2016–20 3.5L V6; Champion Iridium plugs are listed for those Tacoma model years.

This NGK set suits owners of the specifically listed 2005–15 Tacoma 4.0L V6 who want six iridium plugs and stated emissions and misfire benefits. Check the engine generation carefully: it is not listed for the 3.5L V6.

Listed on Amazon as: 6 pc NGK Iridium IX Spark Plugs for Toyota Tacoma 4.0L V6 2005-15

#8

8. Toyota Genuine Spark Plug

• Core Material: Copper
• Top Material Type: Nickel
• Compatible with Vehicle Type: Cruiser
• Thread Size: 14mm

Best for: Older Tacoma OEM replacement.

Why it ranks #8: This genuine Toyota replacement is listed for Tacoma applications through an older generation and does not specify third-generation fitment.

Genuine Toyota branding and an explicit 2005–14 Tacoma application make this OEM replacement listing most relevant to owners of earlier trucks. Its copper core and nickel top specify the basic materials, while the named model-year range helps distinguish it from plugs listed for newer 3.5L V6 Tacomas.

The Toyota listing identifies the plug as a high-quality OEM replacement and names Tacoma model years 2005–14, alongside other Toyota applications. That stated coverage gives older-truck owners a more specific starting point than a listing with no Tacoma years, while the 14 mm thread and copper core with nickel top supply useful part characteristics. The listing does not include a 2016-or-newer Tacoma application, so it is not a match for the named third-generation 3.5L V6 fitments elsewhere in this roundup.

Skip it if you own a 2016–17 3.5L V6; Sixity Auto’s DENSO Iridium TT listing names that Tacoma application.

This is the relevant choice for buyers seeking a genuine Toyota replacement listed for a 2005–14 Tacoma and who value the stated OEM positioning. Its supplied Tacoma coverage stops before third-generation model years.

Listed on Amazon as: Toyota Genuine Spark Plug

#9

9. NGK 6619 Iridium

• Core Material: Iridium
• Top Material Type: Iridium
• Compatible with Vehicle Type: Car, Truck
• Thread Size: 14mm (Thread Diameter), 1.25mm (Thread Pitch)

Best for: Six-pack NGK iridium buyers.

Why it ranks #9: The six-pack NGK listing specifies iridium construction and thread dimensions, but the supplied data does not confirm Tacoma fitment.

NGK’s patented triple-gasket sealing process is the key differentiator here, with the manufacturer stating that it eliminates the possibility of combustion-gas leakage. This six-pack also uses iridium plugs rated to operate across a wider heat range than ordinary plugs, for buyers prioritizing those named design features.

The six-plug pack can supply a full set where the application calls for six, and its 14 mm diameter with 1.25 mm pitch gives specific thread information for installation planning. NGK also says the plugs resist carbon buildup and pre-ignition, while the wider operating heat range distinguishes them from ordinary plugs. The listing does not name Tacoma model years or engines, so its general car-and-truck compatibility is not a specific Tacoma fitment claim.

Skip it if you need explicitly listed Tacoma fitment; the Sixity Auto DENSO set for 2016–17 3.5L V6 names that application.

Choose this NGK pack if its heat-range, iridium, and triple-gasket features match your priorities and you can establish the application independently. The supplied listing does not identify Tacoma engines or model years.

Listed on Amazon as: NGK 6619 Iridium Spark Plugs LFR6AIX-11-6 Pack

#10

10. DENSO 3324 Iridium

• Core Material: Iridium
• Top Material Type: Iridium
• Compatible with Vehicle Type: Car, Truck
• Thread Size: 14mm

Best for: Four-piece DENSO replacement.

Why it ranks #10: This four-pack DENSO listing identifies iridium construction but provides no Tacoma application, so it is the least-supported match for this search.

A four-plug pack is the defining practical distinction of this DENSO 3324 listing, which identifies iridium construction and a 14 mm thread. It is a genuine DENSO direct-replacement part, but the supplied product details do not name a Tacoma engine or model year.

DENSO identifies this product as a genuine direct-replacement auto part, and its iridium core and top provide specific material information for buyers comparing plug types. The four-piece quantity is smaller than the six-plug sets listed for Tacoma V6 applications, which affects whether the pack supplies a complete engine set. Because no Tacoma year or engine is named in the supplied facts, this listing cannot establish third-generation Tacoma compatibility on its own.

Skip it if you need six plugs for a 2016–20 3.5L V6; Sixity Auto’s Champion Iridium set lists that Tacoma application.

Consider this DENSO pack when a four-plug quantity, iridium construction, and direct-replacement description suit your needs. The supplied information does not identify Tacoma fitment, and its quantity is short of a six-plug V6 set.

Listed on Amazon as: DENSO # 3324 Iridium LONG LIFE Spark Plugs — SK16R11 —– 4 PCS NEW