Denso
U-Groove Conventional

Denso 3381 Spark Plug

Brand Denso 3381
Center Electrode Core Material Copper
Center Electrode Tip Material Nickel
Ground Configuration Standard
Ground Electrode Core Material Nickel
Ground Electrode Quantity 1
Ground Electrode Tip Design U-Groove
Hex Size 16.0
Manufacturer Heat Range 20
Pre-Gap Size 1.1
Reach 26.50
Resistance 5000
Seat Type Flat
Thread Diameter 14.00
Product line U-Groove Conventional
Fits Mitsubishi, Subaru, Toyota, Lexus, BMW, Ram, Suzuki, Mercedes-Benz, Volvo, Dodge, Honda, Jeep, Yamaha, Saab, Chrysler, Nissan, Cadillac, and INFINITI · 301 vehicles

U-Groove design. Improves ignitability for more efficient engine performance.

Copper core. Helps promote consistent spark delivery.

Conventional spark plug. A straightforward secondary ignition replacement.

Cross-references Chrysler 5149 050AB, Chrysler 5149 888AA and Chrysler SPFR8TE2AA for the same application. See all 7.

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Denso 3381 U-Groove Spark Plug

Denso 3381 is a conventional spark plug built for consistent ignition performance across a wide range of import and domestic applications. Its U-Groove ground electrode design helps improve ignitability, supporting smoother combustion and more efficient engine operation in compatible vehicles.

Key Features

  • U-Groove ground electrode design for improved spark exposure
  • 5000 ohm resistor for stable ignition performance
  • Copper center electrode core for dependable heat transfer
  • Nickel center and ground electrode tip materials
  • 1.1 pre-gap size for OE-style service replacement
  • Flat seat, 14.00 mm thread diameter, 26.50 mm reach, 16.0 mm hex
  • Manufacturer heat range 20

Product Details

The Denso U-Groove Conventional line is engineered as a practical OE-style spark plug option for drivers who want reliable starting, steady idle quality, and consistent combustion characteristics. Part number 3381 uses a copper core with nickel electrode materials and a U-shaped ground electrode tip to promote better ignitability at the spark gap. This design is commonly selected for vehicles that call for a conventional plug specification rather than a fine-wire iridium or platinum design. This part cross-references DENSO Auto Parts K20HR-U11 for the same application.

Compatible With applications such as Toyota Tacoma, Toyota Tundra, Toyota 4Runner, Subaru Outback, Subaru Forester, BMW 328i, and Volvo XC90, depending on engine configuration and model year. Denso 3381 also appears in fitments for Toyota Land Cruiser, Lexus GX460, Mitsubishi Mirage, and Honda Civic applications listed in the catalog.

What It Helps Address

  • Hard starting caused by worn spark plugs
  • Rough idle from weak or inconsistent spark delivery
  • Misfire conditions related to aged ignition components
  • Reduced fuel efficiency from incomplete combustion
  • Loss of throttle response from degraded plug performance

Installation Notes and Tips

Verify engine-specific fitment before installation, especially on vehicles with special notes such as dual-plug cylinder heads or mixed plug types. Confirm the specified thread diameter, reach, seat type, and heat range match the engine requirements. Check and compare the pre-gap to the vehicle service specification before installing Denso 3381. For fitment examples, this plug is listed for 2005-2017 Toyota Tundra, 2004-2010 Subaru Forester, and 2007-2013 BMW X3 in the catalog.

Quality Assurance

Denso manufactures this spark plug to OE-style dimensional and performance specifications for secondary ignition service. The U-Groove design is intended to improve ignitability while maintaining the durability expected from a conventional replacement plug.

This part fits 301 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelFuel TypePositionNotes
2017MitsubishiMirage——N/AU-Groove Conventional
2017MitsubishiMirage G4——N/AU-Groove Conventional
2017SubaruLegacy——N/AU-Groove Conventional
2017SubaruOutback——N/AU-Groove Conventional
2017ToyotaLand Cruiser——N/AU-Groove Conventional
2017ToyotaSequoia——N/AU-Groove Conventional
2017ToyotaTundra——N/AU-Groove Conventional
2016LexusGX460——N/AU-Groove Conventional
2016LexusLX570——N/AU-Groove Conventional
2016SubaruLegacy——N/AU-Groove Conventional
2016SubaruOutback——N/AU-Groove Conventional
2016SubaruWRX STI——N/AU-Groove Conventional
2016ToyotaLand Cruiser——N/AU-Groove Conventional
2016ToyotaSequoia——N/AU-Groove Conventional
2016ToyotaTacoma——N/AU-Groove Conventional
2016ToyotaTundra——N/AU-Groove Conventional
2015LexusGX460——N/AU-Groove Conventional
2015LexusLX570——N/AU-Groove Conventional
2015MitsubishiMirage——N/AU-Groove Conventional
2015SubaruLegacy——N/AU-Groove Conventional
2015SubaruOutback——N/AU-Groove Conventional
2015SubaruWRX STI——N/AU-Groove Conventional
2015ToyotaLand Cruiser——N/AU-Groove Conventional
2015ToyotaSequoia——N/AU-Groove Conventional
2015ToyotaTacoma——N/AU-Groove Conventional
2015ToyotaTundra——N/AU-Groove Conventional
2014LexusGX460——N/AU-Groove Conventional
2014LexusLX570——N/AU-Groove Conventional
2014ToyotaLand Cruiser——N/AU-Groove Conventional
2014ToyotaSequoia——N/AU-Groove Conventional
2014ToyotaTacoma——N/AU-Groove Conventional
2014ToyotaTundra——N/AU-Groove Conventional
2014ToyotaTundra——N/ATo 06/2013; U-Groove Conventional
2013BMW128i——N/AU-Groove Conventional
2013BMW328i——N/AU-Groove Conventional
2013BMW328i xDrive——N/AU-Groove Conventional
2013LexusGX460——N/AU-Groove Conventional
2013LexusLX570——N/AU-Groove Conventional
2013Ram1500——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2013SuzukiGrand Vitara——N/AU-Groove Conventional
2013Toyota4Runner——N/AU-Groove Conventional
2013ToyotaFJ Cruiser——N/AU-Groove Conventional
2013ToyotaLand Cruiser——N/AU-Groove Conventional
2013ToyotaSequoia——N/AU-Groove Conventional
2013ToyotaTacoma——N/AU-Groove Conventional
2013ToyotaTundra——N/AU-Groove Conventional
2012BMW128i——N/AU-Groove Conventional
2012BMW328i——N/AU-Groove Conventional
2012BMW328i xDrive——N/AU-Groove Conventional
2012BMWX3——N/AU-Groove Conventional
2012LexusGX460——N/AU-Groove Conventional
2012MitsubishiEclipse——N/AU-Groove Conventional
2012SuzukiGrand Vitara——N/AU-Groove Conventional
2012Toyota4Runner——N/AU-Groove Conventional
2012ToyotaFJ Cruiser——N/AU-Groove Conventional
2012ToyotaSequoia——N/AU-Groove Conventional
2012ToyotaTacoma——N/AU-Groove Conventional
2012ToyotaTundra——N/AU-Groove Conventional
2011BMW128i——N/AU-Groove Conventional
2011BMW328i——N/AU-Groove Conventional
2011BMW328i xDrive——N/AU-Groove Conventional
2011BMW528i——N/AU-Groove Conventional
2011BMWX3——N/AU-Groove Conventional
2011BMWZ4——N/AU-Groove Conventional
2011LexusGX460——N/AU-Groove Conventional
2011LexusLX570——N/AU-Groove Conventional
2011Mercedes-BenzG55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2011MitsubishiEclipse——N/AU-Groove Conventional
2011MitsubishiGalant——N/AU-Groove Conventional
2011SuzukiGrand Vitara——N/AU-Groove Conventional
2011Toyota4Runner——N/AU-Groove Conventional
2011ToyotaFJ Cruiser——N/AU-Groove Conventional
2011ToyotaLand Cruiser——N/AU-Groove Conventional
2011ToyotaSequoia——N/AU-Groove Conventional
2011ToyotaTacoma——N/AU-Groove Conventional
2011ToyotaTundra——N/AU-Groove Conventional
2011VolvoC30——N/AU-Groove Conventional
2010BMW128i——N/AU-Groove Conventional
2010BMW328i——N/AU-Groove Conventional
2010BMW328i xDrive——N/AU-Groove Conventional
2010BMW528i——N/AU-Groove Conventional
2010BMW528i xDrive——N/AU-Groove Conventional
2010BMWX3——N/AU-Groove Conventional
2010BMWX5——N/AU-Groove Conventional
2010BMWZ4——N/AU-Groove Conventional
2010DodgeDakota——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2010DodgeRam 1500——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2010HondaCivicHybrid—N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2010JeepCommander——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2010LexusGX460——N/AU-Groove Conventional
2010LexusLX570——N/AU-Groove Conventional
2010Mercedes-BenzG55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2010MitsubishiEclipse——N/AU-Groove Conventional
2010MitsubishiGalant——N/AU-Groove Conventional
2010SubaruForester——N/AU-Groove Conventional
2010SuzukiGrand Vitara——N/AU-Groove Conventional
2010Toyota4Runner——N/AU-Groove Conventional
2010ToyotaFJ Cruiser——N/AU-Groove Conventional
2010ToyotaLand Cruiser——N/AU-Groove Conventional
2010ToyotaSequoia——N/AU-Groove Conventional
2010ToyotaTacoma——N/AU-Groove Conventional
2010ToyotaTundra——N/AU-Groove Conventional
2010VolvoC30——N/AU-Groove Conventional
2010VolvoC70——N/AU-Groove Conventional
2010VolvoS40——N/AU-Groove Conventional
2010VolvoS80——N/AU-Groove Conventional
2010VolvoV50——N/AU-Groove Conventional
2010VolvoV70——N/AU-Groove Conventional
2010VolvoXC60——N/AU-Groove Conventional
2010VolvoXC70——N/AU-Groove Conventional
2010VolvoXC90——N/AU-Groove Conventional
2009BMW128i——N/AU-Groove Conventional
2009BMW328i——N/AU-Groove Conventional
2009BMW328i xDrive——N/AU-Groove Conventional
2009BMW528i——N/AU-Groove Conventional
2009BMW528i xDrive——N/AU-Groove Conventional
2009BMWX3——N/AU-Groove Conventional
2009BMWX5——N/AU-Groove Conventional
2009BMWZ4——N/AU-Groove Conventional
2009DodgeDurango——N/AU-Groove Conventional
2009HondaCivicHybrid—N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2009JeepCommander——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2009JeepGrand Cherokee—FLEXN/AIntake: STD / Exhaust: Iridium, Qty2 Per Cyl.; U-Groove Conventional
2009LexusLX570——N/AU-Groove Conventional
2009Mercedes-BenzG55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2009Mercedes-BenzSLR McLaren——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2009MitsubishiEclipse——N/AU-Groove Conventional
2009MitsubishiGalant——N/AU-Groove Conventional
2009Saab9-3——N/AU-Groove Conventional
2009SubaruForester——N/AU-Groove Conventional
2009SuzukiGrand Vitara——N/AU-Groove Conventional
2009Toyota4Runner——N/AU-Groove Conventional
2009ToyotaFJ Cruiser——N/AU-Groove Conventional
2009ToyotaLand Cruiser——N/AU-Groove Conventional
2009ToyotaSequoia——N/AU-Groove Conventional
2009ToyotaTacoma——N/AU-Groove Conventional
2009ToyotaTundra——N/AU-Groove Conventional
2009VolvoC30——N/AU-Groove Conventional
2009VolvoS40——N/AU-Groove Conventional
2009VolvoV50——N/AU-Groove Conventional
2009VolvoXC90——N/AU-Groove Conventional
2008BMW128i——N/AU-Groove Conventional
2008BMW328i——N/AU-Groove Conventional
2008BMW328xi——N/AU-Groove Conventional
2008BMW528i——N/AU-Groove Conventional
2008BMW528xi——N/AU-Groove Conventional
2008BMWX3——N/AU-Groove Conventional
2008BMWX5——N/AU-Groove Conventional
2008BMWZ4——N/AU-Groove Conventional
2008ChryslerAspen——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2008HondaCivic——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2008JeepCommander——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2008JeepGrand Cherokee——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2008LexusLX570——N/AU-Groove Conventional
2008Mercedes-BenzG55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2008Mercedes-BenzSL55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2008Mercedes-BenzSLR McLaren——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2008MitsubishiEclipse——N/AU-Groove Conventional
2008MitsubishiGalant——N/AU-Groove Conventional
2008Saab9-3——N/AU-Groove Conventional
2008SubaruForester——N/AU-Groove Conventional
2008SubaruImprezaWRX—N/AU-Groove Conventional
2008SubaruLegacy——N/AU-Groove Conventional
2008SubaruOutback——N/AU-Groove Conventional
2008Toyota4Runner——N/AU-Groove Conventional
2008ToyotaFJ Cruiser——N/AU-Groove Conventional
2008ToyotaLand Cruiser——N/AU-Groove Conventional
2008ToyotaSequoia——N/AU-Groove Conventional
2008ToyotaTacoma——N/AU-Groove Conventional
2008ToyotaTundra——N/AU-Groove Conventional
2008VolvoC30——N/AU-Groove Conventional
2008VolvoC70——N/AU-Groove Conventional
2008VolvoS40——N/AU-Groove Conventional
2008VolvoS60——N/AU-Groove Conventional
2008VolvoS80——N/AU-Groove Conventional
2008VolvoV50——N/AU-Groove Conventional
2008VolvoXC90——N/AU-Groove Conventional
2007BMW328i——N/AU-Groove Conventional
2007BMW328xi——N/AU-Groove Conventional
2007BMW525i——N/AU-Groove Conventional
2007BMW525xi——N/AU-Groove Conventional
2007BMW530i——N/AU-Groove Conventional
2007BMW530xi——N/AU-Groove Conventional
2007BMWX3——N/AU-Groove Conventional
2007BMWX5——N/AU-Groove Conventional
2007BMWZ4——N/AU-Groove Conventional
2007HondaCivic——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2007Mercedes-BenzG55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2007Mercedes-BenzSL55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2007Mercedes-BenzSLR McLaren——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2007MitsubishiEclipse——N/AU-Groove Conventional
2007MitsubishiGalant——N/AU-Groove Conventional
2007NissanMaxima——N/ATo 06/2006; U-Groove Conventional
2007Saab9-3——N/AU-Groove Conventional
2007SubaruB9 Tribeca——N/AU-Groove Conventional
2007SubaruForester——N/AU-Groove Conventional
2007SubaruImprezaWRX—N/AU-Groove Conventional
2007SubaruImprezaWRX TR—N/AU-Groove Conventional
2007SubaruImprezaWRX STI—N/AU-Groove Conventional
2007SubaruImprezaWRX STI Limited—N/AU-Groove Conventional
2007SubaruLegacy——N/AU-Groove Conventional
2007SubaruOutback——N/AU-Groove Conventional
2007Toyota4Runner——N/AU-Groove Conventional
2007ToyotaFJ Cruiser——N/AU-Groove Conventional
2007ToyotaTacoma——N/AU-Groove Conventional
2007ToyotaTundra——N/AU-Groove Conventional
2007VolvoC70——N/AU-Groove Conventional
2007VolvoS40——N/AU-Groove Conventional
2007VolvoS60——N/AU-Groove Conventional
2007VolvoS80——N/AU-Groove Conventional
2007VolvoV50——N/AU-Groove Conventional
2007VolvoV70——N/AU-Groove Conventional
2007VolvoXC90——N/AU-Groove Conventional
2006BMW325i——N/AU-Groove Conventional
2006BMW325xi——N/AU-Groove Conventional
2006BMW330i——N/AU-Groove Conventional
2006BMW330xi——N/AU-Groove Conventional
2006BMW525i——N/AU-Groove Conventional
2006BMW525xi——N/AU-Groove Conventional
2006BMW530i——N/AU-Groove Conventional
2006BMW530xi——N/AU-Groove Conventional
2006BMWZ4——N/AU-Groove Conventional
2006HondaCivic——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2006HondaInsight——N/AU-Groove Conventional
2006Mercedes-BenzG55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2006Mercedes-BenzS55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2006Mercedes-BenzSL55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2006Mercedes-BenzSLR McLaren——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2006MitsubishiEclipse——N/AU-Groove Conventional
2006MitsubishiGalant——N/AU-Groove Conventional
2006MitsubishiLancer——N/AU-Groove Conventional
2006MitsubishiOutlander——N/AU-Groove Conventional
2006Saab9-3——N/AU-Groove Conventional
2006SubaruB9 Tribeca——N/AU-Groove Conventional
2006SubaruBaja——N/AU-Groove Conventional
2006SubaruForester——N/AU-Groove Conventional
2006SubaruImprezaWRX—N/AU-Groove Conventional
2006SubaruImprezaWRX TR—N/AU-Groove Conventional
2006SubaruImprezaWRX STI—N/AU-Groove Conventional
2006SubaruImprezaWRX Limited—N/AU-Groove Conventional
2006SubaruLegacy——N/AU-Groove Conventional
2006SubaruOutback——N/AU-Groove Conventional
2006Toyota4Runner——N/AU-Groove Conventional
2006ToyotaTacoma——N/AU-Groove Conventional
2006ToyotaTundra——N/AU-Groove Conventional
2006VolvoC70——N/AU-Groove Conventional
2006VolvoS40——N/AU-Groove Conventional
2006VolvoS60——N/AU-Groove Conventional
2006VolvoV50——N/AU-Groove Conventional
2006VolvoV70——N/AU-Groove Conventional
2005CadillacSTS——N/AU-Groove Conventional
2005HondaInsight——N/AU-Groove Conventional
2005INFINITIQX56——N/AU-Groove Conventional
2005Mercedes-BenzG55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2005Mercedes-BenzS55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2005Mercedes-BenzSL55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2005Mercedes-BenzSLR McLaren——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2005MitsubishiEclipse——N/AU-Groove Conventional
2005MitsubishiGalant——N/AU-Groove Conventional
2005MitsubishiLancer——N/AU-Groove Conventional
2005MitsubishiOutlander——N/AU-Groove Conventional
2005SubaruBaja——N/AU-Groove Conventional
2005SubaruForester——N/AU-Groove Conventional
2005SubaruImprezaWRX STI—N/AU-Groove Conventional
2005SubaruLegacy——N/AU-Groove Conventional
2005SubaruOutback——N/AU-Groove Conventional
2005Toyota4Runner——N/AU-Groove Conventional
2005ToyotaTacoma——N/AU-Groove Conventional
2005ToyotaTundra——N/AU-Groove Conventional
2005VolvoS40——N/AU-Groove Conventional
2005VolvoS60——N/AB5254T4; U-Groove Conventional
2005VolvoS60——N/AU-Groove Conventional
2005VolvoV50——N/AU-Groove Conventional
2005VolvoV70——N/AU-Groove Conventional
2004CadillacSRX——N/AU-Groove Conventional
2004HondaInsight——N/AU-Groove Conventional
2004Mercedes-BenzS55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2004Mercedes-BenzSL55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2004MitsubishiEclipse——N/AU-Groove Conventional
2004MitsubishiGalant——N/AU-Groove Conventional
2004MitsubishiLancer——N/AU-Groove Conventional
2004MitsubishiOutlander——N/AU-Groove Conventional
2004SubaruBaja——N/AU-Groove Conventional
2004SubaruForester——N/AU-Groove Conventional
2004SubaruImprezaWRX STI—N/AU-Groove Conventional
2004Toyota4Runner——N/AU-Groove Conventional
2004VolvoS40——N/AU-Groove Conventional
2004VolvoS60——N/AB5254T4; U-Groove Conventional
2004VolvoV70——N/AU-Groove Conventional
2003HondaInsight——N/AU-Groove Conventional
2003INFINITIFX35——N/AU-Groove Conventional
2003Mercedes-BenzE55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2003Mercedes-BenzS55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2003Mercedes-BenzSL55 AMG——N/ATwo spark plugs are required per cylinder.; U-Groove Conventional
2003SubaruOutback——N/AU-Groove Conventional
2003Toyota4Runner——N/AU-Groove Conventional
2002HondaInsight——N/AU-Groove Conventional
2002SubaruOutback——N/AU-Groove Conventional
2001HondaInsight——N/AU-Groove Conventional
2001SubaruOutback——N/AU-Groove Conventional
2000HondaInsight——N/AU-Groove Conventional
Directly replaces or cross-references 7 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Chrysler — 5149 050ABChrysler — 5149 888AAChrysler — SPFR8TE2AAChrysler — SPFR8TI332DENSO Auto Parts — K20HR-U11Toyota — 90919-01235Volvo — 30650843-0