Denso 3194 Spark Plug
OE Quality 60-Day Returns
Denso
 U-Groove Conventional

Denso 3194 Spark Plug

Brand Denso 3194
Center Electrode Core Material Copper
Center Electrode Tip Material Nickel
Ground Configuration Multi-Electrode
Ground Electrode Core Material Nickel
Ground Electrode Quantity 2
Ground Electrode Tip Design Multi-Electrode
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 and Lexus · 44 vehicles

OEM-specified design. Special ground electrode configuration for consistent ignition performance.

Multi-electrode layout. Two ground electrodes help promote reliable spark delivery.

Copper core. Copper center electrode core supports efficient heat transfer.

Cross-references DENSO Auto Parts K16TR11, Toyota 90919-01192 and Toyota 94856823 for the same application. See all 4.

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Denso 3194 Spark Plug for Toyota and Lexus

Denso 3194 is a conventional spark plug built for OE-specified ignition performance in a wide range of Toyota and Lexus applications. It uses a special multi-electrode ground configuration, a copper core center electrode, and nickel electrode materials to support consistent spark delivery in secondary ignition systems.

The Denso U-Groove Conventional line focuses on OE-style fit and function for drivers servicing older Toyota and Lexus engines. This spark plug is a direct replacement choice for applications such as Toyota Tacoma, Toyota Tundra, Toyota 4Runner, Lexus GS300, and Lexus SC300, with fitment coverage extending across multiple model years.

Key Features

  • Part number 3194 spark plug for OE-style replacement service
  • U-Groove Conventional design with a special ground electrode configuration
  • Multi-electrode ground setup with nickel ground electrode material
  • Copper core center electrode for stable ignition performance
  • Nickel center electrode tip material and 5000 ohm resistance
  • Flat seat design, 14.00 mm thread diameter, 19.00 mm reach, and 16.0 mm hex size
  • Pre-gapped to 1.1 for specified applications

Product Details

Denso 3194 is engineered around OEM-specified electrode geometry, making it a practical service part for maintaining factory ignition characteristics. The multi-electrode ground configuration and U-Groove Conventional design support reliable spark exposure in applications that call for this exact plug style. This part cross-references Denso Auto Parts K16TR11 for the same application.

What This Spark Plug Helps Address

  • Engine misfire caused by worn or fouled spark plugs
  • Hard starting related to weak secondary ignition output
  • Rough idle from inconsistent spark delivery
  • Reduced throttle response from aged ignition components
  • Service replacement needs on Toyota Tacoma, Toyota Tundra, and Toyota 4Runner engines

Installation Notes and Tips

Verify thread diameter, reach, seat type, and heat range before installation. Confirm the vehicle application against the listed fitment for Toyota Tacoma, Toyota Tundra, Toyota 4Runner, Lexus GS300, Lexus SC300, Toyota Sienna, Toyota Corolla, Toyota Paseo, Toyota Tercel, and Toyota T100. Use the specified gap and follow the vehicle manufacturer’s torque procedure during installation.

Quality Assurance

Denso’s U-Groove Conventional spark plug line is built to OE specification standards for direct replacement service in confirmed applications. Part number 3194 is listed with OEM interchange references and application-specific fitment data for accurate ordering.

Related reading

This part fits 44 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2004ToyotaTacomaN/AU-Groove Conventional
2004ToyotaTundraN/AU-Groove Conventional
2003ToyotaTacomaN/AU-Groove Conventional
2003ToyotaTundraN/AU-Groove Conventional
2002Toyota4RunnerN/AU-Groove Conventional
2002ToyotaTacomaN/AU-Groove Conventional
2002ToyotaTundraN/AU-Groove Conventional
2001Toyota4RunnerN/AU-Groove Conventional
2001ToyotaTacomaN/AU-Groove Conventional
2001ToyotaTundraN/AU-Groove Conventional
2000LexusGS300N/AU-Groove Conventional
2000LexusSC300N/AU-Groove Conventional
2000Toyota4RunnerN/AU-Groove Conventional
2000ToyotaSiennaN/AU-Groove Conventional
2000ToyotaTacomaN/AU-Groove Conventional
2000ToyotaTundraN/AU-Groove Conventional
1999LexusGS300N/AU-Groove Conventional
1999LexusSC300N/AU-Groove Conventional
1999Toyota4RunnerN/AU-Groove Conventional
1999ToyotaCorollaN/AU-Groove Conventional
1999ToyotaPaseoN/AU-Groove Conventional
1999ToyotaTacomaN/AU-Groove Conventional
1999ToyotaTercelN/AU-Groove Conventional
1998LexusGS300N/AU-Groove Conventional
1998LexusSC300N/AU-Groove Conventional
1998Toyota4RunnerN/AU-Groove Conventional
1998ToyotaCorollaN/AU-Groove Conventional
1998ToyotaPaseoN/AU-Groove Conventional
1998ToyotaT100N/AU-Groove Conventional
1998ToyotaTacomaN/AU-Groove Conventional
1998ToyotaTercelN/AU-Groove Conventional
1997Toyota4RunnerN/AU-Groove Conventional
1997ToyotaPaseoN/AU-Groove Conventional
1997ToyotaT100N/AU-Groove Conventional
1997ToyotaTacomaN/AU-Groove Conventional
1997ToyotaTercelN/AU-Groove Conventional
1996Toyota4RunnerN/AU-Groove Conventional
1996ToyotaPaseoN/AU-Groove Conventional
1996ToyotaT100N/AU-Groove Conventional
1996ToyotaTacomaN/AU-Groove Conventional
1996ToyotaTercelN/AU-Groove Conventional
1995ToyotaT100N/AU-Groove Conventional
1995ToyotaTacomaN/AU-Groove Conventional
1995ToyotaTercelN/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.
DENSO Auto Parts — K16TR11Toyota — 90919-01192Toyota — 94856823Toyota — 94859009