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Denso 4024 Spark Plug
| Brand | Denso 4024 |
|---|---|
| Resistance | 5000 |
| Ground Electrode Tip Design | Standard |
| Ground Configuration | Standard |
| Ground Electrode Core Material | Nickel |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Nickel |
| Pre-Gap Size | 0.7 |
| Ground Electrode Quantity | 1 |
| Hex Size | 20.6 |
| Manufacturer Heat Range | 22 |
| Seat Type | Flat |
| Reach | 12.70 |
| Thread Diameter | 14.00 |
| Fits | — |
OEM-quality standards. Built to match the expectations of original equipment manufacturing.
U-groove design. Promotes a stronger spark for reliable ignition performance.
Copper core. Helps transfer heat efficiently for consistent operation.
Cross-references DENSO Auto Parts W22FSR for the same application. See all 1.
Denso 4024 U-Groove Conventional Spark Plug
The Denso 4024 is a conventional spark plug built to OEM quality standards for dependable secondary ignition performance. It uses a copper center electrode core, nickel center electrode tip, and a nickel ground electrode to support consistent spark delivery in the right application.
For drivers searching for a Denso spark plug for Honda Civic or Toyota Corolla service, this U-Groove Conventional design offers a practical OE-style replacement option. The 4024 part number is also referenced as DENSO Auto Parts W22FSR.
Key Features
- Part number 4024 from Denso’s U-Groove Conventional line
- Manufactured to OEM quality standards
- 5000 ohm resistor for ignition noise suppression
- Copper center electrode core for stable conductivity
- Nickel center and ground electrode tip materials
- Standard ground configuration and standard ground electrode tip design
- Flat seat, 14.00 mm thread diameter, 12.70 mm reach
- Pre-gapped to 0.7 mm
- 20.6 mm hex size for proper socket fit
Product Details
Denso’s U-Groove Conventional spark plug line focuses on OE-style construction and straightforward service replacement. The U-groove design is paired with a conventional nickel electrode setup, while the copper core helps support reliable heat transfer and ignition performance in the specified application. With a manufacturer heat range of 22 and a flat seat design, the 4024 is built around common OEM service dimensions for vehicles that call for this plug specification.
This spark plug is a direct service part for applications that specify Denso 4024 or the cross-reference DENSO Auto Parts W22FSR. It is a fitment-based replacement for select Honda Civic and Toyota Corolla applications where the listed thread diameter, reach, seat type, and pre-gap match the vehicle requirement.
What It Helps Address
- Hard starting caused by worn spark plug electrodes
- Rough idle from inconsistent spark delivery
- Misfire conditions related to plug wear or gap drift
- Reduced ignition efficiency from aged secondary ignition components
- Service replacement needs for OE-spec spark plug applications
Installation Notes
Verify the vehicle’s required thread diameter, reach, seat type, heat range, and gap before installation. The 4024 is pre-gapped to 0.7 mm, but final gap verification is still recommended during service. Use the correct 20.6 mm hex socket and follow the manufacturer’s torque specification for the engine.
Compatible With select Honda Civic and Toyota Corolla applications only when the engine calls for Denso 4024 / W22FSR specifications. Fits language should always be confirmed against the vehicle’s original plug requirements.
Quality Assurance
Denso manufactures this spark plug to OEM quality standards for consistent service replacement performance. The conventional U-Groove design, nickel electrode materials, and specified resistance value reflect an OE-style construction approach for the intended applications.
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