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Denso 5372 Spark Plug
| Brand | Denso 5372 |
|---|---|
| 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 | 18.0 |
| Manufacturer Heat Range | 24 |
| Seat Type | Flat |
| Reach | 19.00 |
| Thread Diameter | 12.00 |
| Fits | — |
Iridium Power. Features Denso's smallest iridium center electrode for stronger performance.
Tapercut, U-Groove design. Promotes a more efficient spark for responsive ignition.
Copper core. Helps conduct heat efficiently for stable spark plug operation.
Cross-references DENSO Auto Parts IX24 for the same application. See all 1.
Denso Iridium Power Spark Plug 5372
Denso Iridium Power spark plug 5372 is built for drivers who want precise ignition performance from a compact iridium design. It uses a 0.4 mm iridium center electrode, a copper core, and a nickel ground electrode to support consistent spark delivery in demanding secondary ignition systems.
Key Features
- Iridium center electrode tip with a 0.4 mm fine-wire design
- Tapercut and U-groove ground electrode tip design for focused spark exposure
- Pre-gapped to 0.8 mm
- 5000 ohm resistor for ignition noise control
- 12 mm thread diameter, 19.00 mm reach, and flat seat
- 18.0 mm hex size for proper socket fitment
- Cross-reference: DENSO Auto Parts IX24
Product Details
The Denso Iridium Power line is focused on ignition efficiency through fine-wire electrode construction and stable spark characteristics. Part number 5372 uses an iridium center electrode with a copper core and a nickel ground electrode to support reliable combustion events in engines that call for a 12 mm, flat-seat spark plug with a 19.00 mm reach. This spark plug is a direct search match for Denso 5372, Denso Iridium Power 5372, and Denso IX24 applications.
For shoppers searching for a Denso spark plug for Honda Civic or a Denso Iridium Power plug for Honda Civic, part number 5372 is the relevant reference to verify against the vehicle’s ignition specification and service manual requirements.
What It Helps Address
- Misfire caused by worn or eroded spark plug electrodes
- Hard starting from weak or inconsistent ignition output
- Rough idle related to degraded spark quality
- Reduced throttle response from inefficient combustion
- Ignition noise concerns in resistor-equipped systems
Installation Notes and Tips
Verify thread diameter, reach, seat type, and hex size before installation. Confirm the specified gap against the engine service information; this plug is pre-gapped to 0.8 mm, but final verification is still recommended during service. Use the correct spark plug socket and torque to the vehicle manufacturer’s specification to protect the threads and sealing surface.
Compatible With select Honda Civic applications when the engine specification calls for Denso 5372 / IX24 dimensions and heat range. Always match the plug to the exact engine code and service data before installation.
Quality Assurance
Denso manufactures this Iridium Power spark plug with a fine-wire iridium center electrode and OE-style dimensional specifications for accurate fitment verification. Part number 5372 is built to the listed electrical and physical requirements for ignition service.
| Year | Make | Model | Position | Notes |
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