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Prices may varyThis product ranks #18 of 31 in Spark Plug.Three above it ↓
Last reviewed July 10, 2026
TL;DR Denso is Toyota's OE spark plug supplier; K20HR-U11 (Toyota 90919-01235) is the factory nickel U-Groove plug for the 1GR-FE 4.0L V6, rated 30,000 miles and community-confirmed at that interval.
The K20HR-U11 uses a nickel center and ground electrode over a copper core, Denso's standard U-Groove design, not the finer-wire iridium construction of Denso's SK20HR11 upgrade. Denso supplies this exact plug to Toyota as OEM part 90919-01235 for the 1GR-FE 4.0L V6. Rated 30,000 miles by Toyota, corroborated by Toyota Nation and TacomaWorld threads describing it as a routine tune-up item. Factory gap is 1.0-1.1mm (0.040-0.043"), pre-set. Fitment covers the full 1GR-FE lineup: Tacoma, 4Runner, FJ Cruiser, Tundra, Sequoia, plus confirmed cross-fitment to 2004-2007 Subaru WRX/STI.
Right pick for a 2005-2015 Tacoma V6, 4Runner, FJ Cruiser, Tundra, or Sequoia owner doing the factory 30,000-mile plug service. OE-confirmed cross-reference, factory gap, a six-plug set in one pack. Skip it for a longer interval; Denso's SK20HR11 iridium plug fits the same engine at over three times the mileage.
No chemical exposure: passive ceramic-and-steel part, no SDS. Nickel electrode tips carry no platinum-group-metal content, the lowest extraction footprint in the category. Steel shell recycles as ferrous scrap; the ceramic insulator goes to landfill.
Yes. Denso is Toyota's OEM spark plug supplier, and Denso stock number 3381 (K20HR-U11) is the factory plug Toyota installs on the 1GR-FE 4.0L V6 and sells through its dealer parts channel as 90919-01235. Toyota's own published spark plug application data lists this part number for the V6.
No. The K20HR-U11 is a standard nickel U-Groove plug: nickel center and ground electrode tips over a copper core, confirmed on Denso's own product page. Denso sells a separate iridium long-life plug, the SK20HR11, for the same engine at a longer rated service interval.
Toyota rates the K20HR-U11 for 30,000 miles on the 1GR-FE 4.0L V6, and multiple Toyota owner forum threads refer to the plug change as part of the routine 30,000-mile tune-up. That is the standard nickel-plug interval, shorter than the iridium SK20HR11's 100,000-mile rating for the same engine.
Yes. The K20HR-U11 is the factory plug for the 4.0L 1GR-FE V6 used in the 2005-2015 Tacoma, alongside the same-engine 4Runner, FJ Cruiser, Tundra, and Sequoia. It is not the plug for the 2.7L 2TR-FE four-cylinder Tacoma, which uses a different part number.
Yes. The factory gap is 1.0-1.1mm (0.040-0.043 inches), and Denso ships the plug pre-gapped to that range. Community install guidance for the 1GR-FE recommends verifying the gap before installation but does not require adjustment on a standard application.
Marketing copy from Denso, via Amazon. Not editorial.
Per manufacturer cross-reference. Verify on Amazon before purchase.
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