Denso 5367 Spark Plug

Denso Iridium Power Spark Plug 5367

Denso Iridium Power spark plug 5367 is built for drivers who want precise ignition performance from a compact, high-efficiency plug design. It uses a 0.4 mm iridium center electrode to support strong spark concentration, along with a tapercut and U-groove ground electrode profile for consistent flame initiation.

Compatible With select ignition service applications where a 14.0 mm thread diameter, 19.00 mm reach, flat seat, and 16.0 mm hex are required. This Denso 5367 spark plug is a direct-fit style secondary ignition component for buyers searching for Denso spark plug 5367, Denso Iridium Power 5367, and OE-style iridium spark plug replacement options.

Key Features

• Iridium center electrode tip with a 0.4 mm fine-wire design
• Tapercut, U-groove ground electrode tip design
• Slant ground configuration for stable spark exposure
• Copper center electrode core and nickel ground electrode core
• 5000 ohm resistance specification
• Pre-gapped to 0.9 mm
• 14.00 mm thread diameter, 19.00 mm reach, 16.0 mm hex, flat seat
• Manufacturer heat range 31

Product Details

The Denso Iridium Power line focuses on compact electrode geometry and efficient spark delivery. On part number 5367, the iridium center tip is paired with a tapered, U-groove ground design to help maintain a concentrated spark path under demanding ignition conditions. The copper core supports heat transfer, while the nickel ground electrode construction adds durability for everyday engine operation. This part cross-references DENSO Auto Parts IU31A for the same application.

Common Symptoms Addressed

• Rough idle or inconsistent combustion
• Hard starting caused by worn spark plugs
• Misfire codes related to ignition wear
• Reduced throttle response from degraded spark quality
• Fuel economy loss tied to weak ignition performance

Installation Notes

Verify thread diameter, reach, seat type, and hex size before installation. Check the gap specification against the engine requirement and confirm the ignition system is in good condition before replacing plugs. For vehicle-specific searches, use terms such as Denso 5367 spark plug for Honda Civic, Denso 5367 spark plug for Toyota Corolla, or Denso Iridium Power 5367 for import ignition service when matching the correct engine application.

Quality Assurance

Denso manufactures the Iridium Power series with fine-wire iridium electrode technology and application-specific ignition specifications. Part number 5367 is built to the listed dimensions and electrical characteristics for accurate replacement selection.