Denso 3120 Spark Plug
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Denso
 U-Groove Conventional

Denso 3120 Spark Plug

Brand Denso 3120
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 16
Pre-Gap Size 1.1
Reach 19.00
Resistance 5000
Seat Type Flat
Thread Diameter 14.00
Product line U-Groove Conventional
Fits Toyota, Scion, Mazda, Audi, Hyundai, Kia, Dodge, Jaguar, Pontiac, Lexus, Mitsubishi, Chevrolet, Chrysler, and Plymouth · 166 vehicles

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

Copper core. Helps promote consistent spark delivery.

Nickel electrodes. Built with nickel tip and ground materials for dependable wear.

Cross-references Chrysler 4609 079, Chrysler SP0RC12YC5 and DENSO Auto Parts K16R-U11 for the same application. See all 4.

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Denso 3120 U-Groove Spark Plug

Denso 3120 is a conventional spark plug built for direct ignition service across a wide range of Toyota, Lexus, Scion, and other import and domestic applications. Its U-Groove ground electrode design is engineered to improve ignitability, helping support more efficient combustion and consistent engine operation.

Key Features

  • U-Groove ground electrode tip design for improved spark exposure
  • 5000 ohm resistor for ignition noise suppression
  • Copper center electrode core for stable heat transfer
  • Nickel center and ground electrode tip materials
  • Standard ground configuration with a flat seat
  • 14.00 mm thread diameter, 19.00 mm reach, and 16.0 mm hex size
  • Pre-gapped to 1.1 mm
  • Manufacturer heat range 16

Product Details

This Denso U-Groove Conventional spark plug is designed for vehicles that call for a standard replacement plug with OE-style dimensions and ignition characteristics. The U-shaped ground electrode helps expose the spark kernel more effectively, while the copper core supports heat dissipation for steady performance. Denso 3120 is a practical choice for drivers servicing applications such as Toyota Corolla, Toyota Prius, Lexus GS300, and Toyota Yaris, along with additional listed fitments.

This part cross-references Toyota 90919-01164 and DENSO Auto Parts K16R-U11 for the same application.

What It Helps Address

  • Hard starting caused by worn or fouled spark plugs
  • Rough idle from weak or inconsistent spark delivery
  • Misfire conditions related to aged secondary ignition components
  • Reduced fuel efficiency from incomplete combustion
  • Loss of throttle response in high-mileage ignition systems

Installation Notes and Tips

Verify thread diameter, reach, seat type, and heat range against the vehicle’s service specifications before installation. Check the pre-gap setting and confirm the ignition system is in good condition, since coil, wire, or fuel-system issues can affect plug performance. This spark plug is listed for a broad range of applications including Toyota Corolla, Toyota Prius, and Lexus GS300, so confirm exact engine fitment by year and model before service.

Quality Assurance

Denso manufactures this spark plug with nickel and copper electrode materials and a resistor design suited for conventional ignition service. The U-Groove line is built around improved ignitability and efficient combustion support for listed applications.

Related reading

This part fits 166 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelPositionNotes
2016ToyotaYaris—N/AU-Groove Conventional
2015ScionxB—N/AU-Groove Conventional
2015ToyotaYaris—N/AU-Groove Conventional
2014Mazda2—N/AU-Groove Conventional
2014ToyotaYaris—N/AU-Groove Conventional
2013Mazda2—N/AU-Groove Conventional
2013ToyotaYaris—N/AU-Groove Conventional
2012Mazda2—N/AU-Groove Conventional
2012ToyotaYaris—N/AU-Groove Conventional
2011Mazda2—N/AU-Groove Conventional
2011ToyotaYaris—N/AU-Groove Conventional
2010AudiA5 Quattro—N/AU-Groove Conventional
2010ToyotaYaris—N/AU-Groove Conventional
2009AudiA4 Quattro—N/AU-Groove Conventional
2009AudiA5 Quattro—N/AU-Groove Conventional
2009HyundaiSonata—N/AU-Groove Conventional
2009KiaOptima—N/AU-Groove Conventional
2009ToyotaPrius—N/AU-Groove Conventional
2009ToyotaYaris—N/AU-Groove Conventional
2008AudiA5 Quattro—N/AU-Groove Conventional
2008DodgeDakota—N/AU-Groove Conventional
2008HyundaiSonata—N/AU-Groove Conventional
2008KiaOptima—N/AU-Groove Conventional
2008KiaRondo—N/AU-Groove Conventional
2008ToyotaCorolla—N/AU-Groove Conventional
2008ToyotaMatrix—N/AU-Groove Conventional
2008ToyotaPrius—N/AU-Groove Conventional
2008ToyotaYaris—N/AU-Groove Conventional
2007DodgeRam 1500—N/AU-Groove Conventional
2007HyundaiSonata—N/AU-Groove Conventional
2007JaguarS-Type—N/AU-Groove Conventional
2007JaguarSuper V8—N/AU-Groove Conventional
2007JaguarVanden Plas—N/AU-Groove Conventional
2007JaguarXJ8—N/AU-Groove Conventional
2007JaguarXJR—N/AU-Groove Conventional
2007JaguarXK—N/AU-Groove Conventional
2007JaguarXKR—N/AU-Groove Conventional
2007KiaOptima—N/AU-Groove Conventional
2007KiaRondo—N/AU-Groove Conventional
2007PontiacVibe—N/AU-Groove Conventional
2007ToyotaCorolla—N/AU-Groove Conventional
2007ToyotaMatrix—N/AU-Groove Conventional
2007ToyotaPrius—N/AU-Groove Conventional
2007ToyotaYaris—N/AU-Groove Conventional
2006HyundaiSonata—N/AU-Groove Conventional
2006JaguarS-Type—N/AU-Groove Conventional
2006JaguarSuper V8—N/AU-Groove Conventional
2006JaguarVanden Plas—N/AU-Groove Conventional
2006JaguarXJ8—N/AU-Groove Conventional
2006JaguarXJR—N/AU-Groove Conventional
2006JaguarXK8—N/AU-Groove Conventional
2006JaguarXKR—N/AU-Groove Conventional
2006KiaOptima—N/AU-Groove Conventional
2006PontiacVibe—N/AU-Groove Conventional
2006ToyotaCorolla—N/AU-Groove Conventional
2006ToyotaMatrixXRN/AU-Groove Conventional
2006ToyotaMatrixBaseN/AU-Groove Conventional
2006ToyotaPrius—N/AU-Groove Conventional
2006ToyotaYaris—N/AU-Groove Conventional
2005JaguarS-Type—N/AU-Groove Conventional
2005JaguarSuper V8—N/AU-Groove Conventional
2005JaguarVanden Plas—N/AU-Groove Conventional
2005JaguarXJ8—N/AU-Groove Conventional
2005JaguarXJR—N/AU-Groove Conventional
2005JaguarXK8—N/AU-Groove Conventional
2005JaguarXKR—N/AU-Groove Conventional
2005LexusGS300—N/AU-Groove Conventional
2005LexusIS300—N/AU-Groove Conventional
2005PontiacVibe—N/AU-Groove Conventional
2005ToyotaCelica—N/AU-Groove Conventional
2005ToyotaCorolla—N/AU-Groove Conventional
2005ToyotaMatrixXRN/AU-Groove Conventional
2005ToyotaMatrixBaseN/AU-Groove Conventional
2005ToyotaMR2 Spyder—N/AU-Groove Conventional
2005ToyotaPrius—N/AU-Groove Conventional
2004JaguarS-Type—N/AU-Groove Conventional
2004JaguarVanden Plas—N/AU-Groove Conventional
2004JaguarXJ8—N/AU-Groove Conventional
2004JaguarXJR—N/AU-Groove Conventional
2004LexusGS300—N/AU-Groove Conventional
2004LexusIS300—N/AU-Groove Conventional
2004MitsubishiMontero Sport—N/AU-Groove Conventional
2004PontiacVibe—N/AU-Groove Conventional
2004ToyotaCelica—N/AU-Groove Conventional
2004ToyotaCorolla—N/AU-Groove Conventional
2004ToyotaMatrixXRN/AU-Groove Conventional
2004ToyotaMatrixBaseN/AU-Groove Conventional
2004ToyotaMR2 Spyder—N/AU-Groove Conventional
2004ToyotaPrius—N/AU-Groove Conventional
2004ToyotaTacoma—N/AU-Groove Conventional
2003JaguarS-Type—N/AU-Groove Conventional
2003LexusGS300—N/AU-Groove Conventional
2003LexusIS300—N/AU-Groove Conventional
2003MitsubishiMontero Sport—N/AU-Groove Conventional
2003PontiacVibe—N/AU-Groove Conventional
2003ToyotaCelica—N/AU-Groove Conventional
2003ToyotaCorolla—N/AU-Groove Conventional
2003ToyotaMatrixXRN/AU-Groove Conventional
2003ToyotaMatrixBaseN/AU-Groove Conventional
2003ToyotaMR2 Spyder—N/AU-Groove Conventional
2003ToyotaPrius—N/AU-Groove Conventional
2003ToyotaTacoma—N/AU-Groove Conventional
2002ChevroletPrizm—N/AU-Groove Conventional
2002LexusGS300—N/AU-Groove Conventional
2002LexusIS300—N/AU-Groove Conventional
2002MitsubishiMontero—N/AU-Groove Conventional
2002MitsubishiMontero Sport—N/AU-Groove Conventional
2002ToyotaCelica—N/AU-Groove Conventional
2002ToyotaCorolla—N/AU-Groove Conventional
2002ToyotaMR2 Spyder—N/AU-Groove Conventional
2002ToyotaPrius—N/AU-Groove Conventional
2002ToyotaTacoma—N/AU-Groove Conventional
2001ChevroletPrizm—N/AU-Groove Conventional
2001LexusGS300—N/AU-Groove Conventional
2001LexusIS300—N/AU-Groove Conventional
2001MitsubishiMontero—N/AU-Groove Conventional
2001MitsubishiMontero Sport—N/AU-Groove Conventional
2001ToyotaCelica—N/AU-Groove Conventional
2001ToyotaCorolla—N/AU-Groove Conventional
2001ToyotaMR2 Spyder—N/AU-Groove Conventional
2001ToyotaPrius—N/AU-Groove Conventional
2001ToyotaTacoma—N/AU-Groove Conventional
2000ChevroletPrizm—N/AU-Groove Conventional
2000ChryslerCirrus—N/AU-Groove Conventional
2000ChryslerVoyager—N/AU-Groove Conventional
2000DodgeAvenger—N/AU-Groove Conventional
2000DodgeCaravan—N/AU-Groove Conventional
2000DodgeStratus—N/AU-Groove Conventional
2000MitsubishiMontero Sport—N/AU-Groove Conventional
2000PlymouthBreeze—N/AU-Groove Conventional
2000PlymouthVoyager—N/AU-Groove Conventional
2000Toyota4Runner—N/AU-Groove Conventional
2000ToyotaCelica—N/AU-Groove Conventional
2000ToyotaCorolla—N/AU-Groove Conventional
2000ToyotaEcho—N/AU-Groove Conventional
2000ToyotaMR2 Spyder—N/AU-Groove Conventional
1999DodgeAvenger—N/AU-Groove Conventional
1999DodgeCaravan—N/AU-Groove Conventional
1999MitsubishiMontero Sport—N/AU-Groove Conventional
1998ToyotaSupra—N/AU-Groove Conventional
1997LexusGS300—N/AU-Groove Conventional
1997LexusSC300—N/AU-Groove Conventional
1997ToyotaSupra—N/AU-Groove Conventional
1996LexusGS300—N/AU-Groove Conventional
1996LexusSC300—N/AU-Groove Conventional
1996ToyotaSupra—N/AU-Groove Conventional
1995LexusGS300—N/AU-Groove Conventional
1995LexusSC300—N/AU-Groove Conventional
1995ToyotaPaseo—N/AU-Groove Conventional
1995ToyotaPrevia—N/AU-Groove Conventional
1995ToyotaSupra—N/AU-Groove Conventional
1994LexusGS300—N/AU-Groove Conventional
1994LexusSC300—N/AU-Groove Conventional
1994ToyotaPaseo—N/AU-Groove Conventional
1994ToyotaPrevia—N/AU-Groove Conventional
1994ToyotaSupra—N/AU-Groove Conventional
1993LexusGS300—N/AU-Groove Conventional
1993ToyotaPaseo—N/AU-Groove Conventional
1993ToyotaPrevia—N/AU-Groove Conventional
1993ToyotaSupra—N/AU-Groove Conventional
1992ToyotaPaseo—N/AU-Groove Conventional
1992ToyotaPrevia—N/AU-Groove Conventional
1991ToyotaCelica—N/AU-Groove Conventional
1991ToyotaMR2—N/AU-Groove Conventional
1991ToyotaPrevia—N/AU-Groove Conventional
1990ToyotaCelica—N/AU-Groove Conventional
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Chrysler — 4609 079Chrysler — SP0RC12YC5DENSO Auto Parts — K16R-U11Toyota — 90919-01164