Denso 5713 Spark Plug

Denso Iridium Racing Spark Plug 5713

Denso Iridium Racing 5713 is a race-focused spark plug built for serious enthusiasts who want precise ignition performance from a compact, high-spec design. It combines an iridium center electrode with a copper core and a flat-seat construction for demanding secondary ignition applications.

For drivers searching for a Denso spark plug for performance tuning, racing ignition service, or a Denso 5713 replacement, this plug brings together a 0.6 pre-gap, 14.00 mm thread diameter, 19.00 mm reach, and 20.6 mm hex size. It is also referenced under Denso Auto Parts IW01-24.

Key Features

• Iridium center electrode tip for stable spark delivery
• Copper center electrode core for efficient heat transfer
• Full platinum ground electrode tip design
• Slant ground configuration with one ground electrode
• 5000 ohm resistance for ignition system compatibility
• Manufacturer heat range 24
• Flat seat type with 14.00 mm thread diameter and 19.00 mm reach
• Pre-gapped to 0.6 for performance applications

Product Details

Denso Iridium Racing 5713 is part of the Iridium Racing line, a product family aimed at high-demand ignition service where consistent spark quality and durable electrode materials matter. The iridium center electrode tip, platinum ground tip, and nickel ground core are paired with a copper center core to support strong ignition characteristics under performance use. If you are comparing Denso 5713 spark plug options for a race build or a tuned engine, this part is built around precise dimensions and a performance-oriented electrode layout.

This part cross-references Denso Auto Parts IW01-24 for the same application.

What It Helps Address

• Misfire concerns caused by worn or inconsistent spark plugs
• Hard starting related to degraded ignition performance
• Rough idle from weak spark delivery
• Loss of throttle response in performance-tuned engines
• Ignition service needs for race-oriented setups

Installation Notes and Tips

Verify thread diameter, reach, seat type, and hex size before installation. Confirm the ignition system is set up for a 5000 ohm resistor plug and check the specified gap against the engine’s requirements before use. For vehicle-specific searches such as Denso 5713 for Honda Civic or Denso 5713 for Acura Integra, confirm engine application details before ordering.

Because fitment data is not provided in the catalog record, use the engine’s service specifications and OE plug dimensions to confirm application match. Always inspect the plug well, threads, and coil connection during service.

Quality Assurance

Denso positions the Iridium Racing line as a no-compromise spark plug family for serious performance use. The materials and construction details listed here reflect that focus on ignition consistency, durability, and precise fitment dimensions.