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Denso 5384 Spark Plug
| Brand | Denso 5384 |
|---|---|
| Resistance | 5000 |
| Ground Electrode Tip Design | Tapercut, u-groove |
| Ground Configuration | Standard |
| Ground Electrode Core Material | Nickel |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Iridium |
| Pre-Gap Size | 0.8 |
| Ground Electrode Quantity | 1 |
| Hex Size | 16.0 |
| Manufacturer Heat Range | 24 |
| Seat Type | Flat |
| Reach | 12.70 |
| Thread Diameter | 14.00 |
| Fits | — |
Iridium Power. Performance-focused spark plug with a 0.4 mm iridium center electrode.
Tapercut, U-Groove. Ground electrode design promotes efficient spark delivery.
Copper core. Copper center core helps conduct heat effectively.
Cross-references DENSO Auto Parts IUF24 for the same application. See all 1.
Denso Iridium Power Spark Plug 5384
Denso Iridium Power spark plug 5384 is built for drivers who want precise ignition performance from a compact iridium design. It uses a 0.4 mm iridium center electrode to support consistent spark delivery, along with a tapercut and U-groove ground electrode profile for efficient flame initiation.
For buyers searching for a Denso spark plug for Honda Civic or Toyota Corolla ignition service, part number 5384 offers OE-style dimensions and a performance-focused electrode layout. The Iridium Power line is Denso’s performance spark plug family, engineered around fine-wire iridium technology for responsive combustion.
Key Features
- Part number 5384 from Denso Iridium Power
- 0.4 mm iridium center electrode tip
- Tapercut, U-groove ground electrode tip design
- 5000 ohm resistor for ignition noise suppression
- Copper core center electrode for heat transfer
- Nickel ground electrode core material
- 0.8 mm pre-gap size
- 14.00 mm thread diameter, 12.70 mm reach, flat seat
- 16.0 mm hex size for service access
Detailed Description
Denso 5384 is a secondary ignition spark plug designed around a fine iridium center electrode and a single-ground-electrode configuration. The small iridium tip helps concentrate the spark, while the tapercut and U-groove ground design supports efficient ignition at the plug gap. With a 5000 ohm resistor, copper core center electrode, and nickel ground electrode core, this plug is built for stable electrical performance and heat management in the cylinder head.
This Denso Iridium Power spark plug 5384 is a strong match for shoppers comparing ignition parts for Honda Civic and Toyota Corolla service, especially when looking for a Denso IUF24 cross-reference. Use the part number 5384 when verifying application details against the vehicle’s original spark plug specification.
What It Helps Address
- Misfire caused by worn or eroded spark plug electrodes
- Hard starting related to weak ignition output
- Rough idle from inconsistent spark delivery
- Reduced throttle response from degraded plug performance
- Ignition noise concerns in resistor-equipped systems
Installation Notes and Tips
Confirm thread diameter, reach, seat type, and heat range before installation. The listed 14.00 mm thread diameter, 12.70 mm reach, flat seat, and manufacturer heat range 24 should be matched to the engine specification before service. Check the gap against the vehicle requirement and inspect the ignition coil, wires, or boots if the old plug shows signs of fouling or overheating. For Honda Civic and Toyota Corolla applications, verify the exact engine code and OE plug specification before installing part number 5384.
Quality Assurance
Denso is known for OE-level ignition component engineering, and the Iridium Power line uses fine-wire iridium technology to support precise spark performance. This part cross-references Denso Auto Parts IUF24 for the same application.
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