Denso 3432 Spark Plug

Denso Iridium Long Life Spark Plug 3432

Denso 3432 is an Iridium Long Life spark plug built for OE-level performance, durability, and emissions control. It is a direct-fit ignition component for 2006-2011 Honda Civic applications and is engineered with an iridium center electrode for stable ignition performance over extended service intervals.

Key Features

• Iridium center electrode tip for consistent spark delivery
• Platinum chip ground electrode tip design
• 5000 ohm resistance for ignition noise suppression
• Copper center electrode core and nickel ground electrode core
• Pre-gapped to 1.1 mm
• Flat seat design with 14.00 mm thread diameter and 19.00 mm reach
• 16.0 mm hex size for proper service tool fit
• Manufacturer heat range 20

Product Details

The Denso Iridium Long Life line is built for drivers who want an OE-style spark plug with durable electrode materials and precise construction. Part number 3432 uses an iridium center electrode tip paired with a platinum chip ground electrode design to support reliable ignition performance in everyday driving. This spark plug is listed for 2006-2011 Honda Civic models, making it a direct replacement choice for Honda Civic spark plug service when the original plug specification calls for this application. This part cross-references Denso Auto Parts SKJ20DR-M11S for the same application.

Common Issues This Part Can Address

• Hard starting caused by worn spark plug electrodes
• Rough idle from inconsistent ignition firing
• Misfire conditions related to plug wear or gap drift
• Reduced fuel economy from weak spark delivery
• Emissions concerns tied to degraded ignition performance

Installation Notes and Tips

Verify the vehicle application before installation and confirm the plug specification matches the engine requirements for your Honda Civic. Use the correct spark plug socket for the 16.0 mm hex and follow the manufacturer torque specification for the cylinder head. Inspect ignition coils, boots, and plug wells during service, and replace any damaged components before installing the new plug. Check the pre-gap size against the engine specification if your service procedure requires a final adjustment.

Quality Assurance

Denso manufactures this spark plug to meet strict OE performance, durability, and emissions standards. The Iridium Long Life design reflects Denso’s focus on precise ignition components for factory-style fitment and dependable service life in Honda Civic applications.