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Denso 3131 Spark Plug
| Brand | Denso 3131 |
|---|---|
| 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 | Standard |
| 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 | Volkswagen, Mazda, Honda, and Isuzu · 11 vehicles |
OEM-quality standards. Built to match original equipment expectations.
U-groove design. Promotes a stronger spark for reliable ignition.
Copper core. Helps conduct heat efficiently for stable performance.
Cross-references DENSO Auto Parts KJ16CR11 for the same application. See all 1.
Denso 3131 U-Groove Conventional Spark Plug
The Denso 3131 spark plug is a U-Groove Conventional ignition component built to OEM quality standards for steady secondary ignition performance. It uses a copper center electrode core, nickel center electrode tip, and nickel ground electrode materials to support reliable spark delivery in everyday driving.
Compatible With 2006 Volkswagen Golf, 2002 Mazda Millenia, 2000-2001 Mazda Protege, 1998 Honda Odyssey, 1996-1997 Isuzu Oasis, 1996 Honda Accord, and 1990-1991 Mazda 929. This Denso 3131 spark plug is also cross-referenced to DENSO Auto Parts KJ16CR11 for the same application.
Key Features
- U-Groove Conventional spark plug design
- OEM-quality manufacturing standard
- 5000 ohm resistance for ignition system compatibility
- Copper center electrode core for efficient heat transfer
- Nickel center and ground electrode tip materials
- Standard ground configuration and standard ground electrode tip design
- Pre-gap size: 1.1 mm
- Flat seat type with 14.00 mm thread diameter and 19.00 mm reach
- 16.0 mm hex size and manufacturer heat range 16
Product Details
Built for secondary ignition service, the Denso 3131 combines a conventional U-groove electrode layout with OEM-level construction for consistent spark formation. The copper core helps manage heat, while the nickel electrode materials support dependable wear characteristics in the specified applications. This part number is a direct service option for drivers searching for a Denso 3131 spark plug for Volkswagen Golf, Mazda Protege, Honda Accord, and other listed vehicles.
Common Issues This Part Can Address
- Hard starting caused by worn spark plug electrodes
- Rough idle from weak or inconsistent spark output
- Misfire conditions related to plug wear or gap drift
- Reduced throttle response from degraded ignition performance
- Fuel economy loss tied to inefficient combustion
Installation Notes
Verify thread diameter, reach, seat type, and pre-gap before installation. Confirm vehicle application by year, make, and model, especially on 2000-2001 Mazda Protege, 1998 Honda Odyssey, and 1996 Honda Accord applications. Use the specified gap and follow the vehicle manufacturer’s ignition service procedure for torque and plug inspection.
Quality Assurance
Denso manufactures this spark plug to OEM quality standards for consistent fit and function in the listed applications. The U-Groove Conventional line focuses on dependable conventional ignition service for vehicles requiring this plug specification.
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2006 | Volkswagen | Golf | — | N/A | U-Groove Conventional |
| 2002 | Mazda | Millenia | — | N/A | U-Groove Conventional |
| 2001 | Mazda | Protege | — | N/A | U-Groove Conventional |
| 2000 | Mazda | Millenia | — | N/A | U-Groove Conventional |
| 2000 | Mazda | Protege | — | N/A | U-Groove Conventional |
| 1998 | Honda | Odyssey | — | N/A | U-Groove Conventional |
| 1997 | Isuzu | Oasis | — | N/A | U-Groove Conventional |
| 1996 | Honda | Accord | Value Package | N/A | U-Groove Conventional |
| 1996 | Isuzu | Oasis | — | N/A | U-Groove Conventional |
| 1991 | Mazda | 929 | — | N/A | U-Groove Conventional |
| 1990 | Mazda | 929 | — | N/A | U-Groove Conventional |
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