Denso 673-4002 Direct Ignition Coil - Right

Overview of the Denso 673-4002 Ignition Coil

The Denso 673-4002 is a direct ignition coil designed specifically for select INFINITI and Nissan vehicles. Engineered to deliver reliable 12-volt performance, this ignition coil ensures consistent spark delivery for optimal engine operation in models like the Nissan Maxima and INFINITI I30.

• Direct ignition coil with 12-volt rating
• Compatible with INFINITI I30 and Nissan Maxima
• Black color housing for durability and heat resistance
• Part number 673-4002 for precise identification
• Part of Denso's Coil on Plug product line

About the Denso Coil on Plug Product Line

The Coil on Plug product line from Denso focuses on direct ignition coils that mount directly onto the spark plug. This design reduces energy loss and improves ignition efficiency by eliminating the need for spark plug wires. The 673-4002 ignition coil benefits from this technology, providing a streamlined installation and reliable spark delivery for compatible Nissan and INFINITI models.

Detailed Product Description

The Denso 673-4002 ignition coil operates at a standard 12 volts and features a robust black housing designed to withstand engine bay conditions. As a direct ignition coil, it replaces the traditional distributor and spark plug wire setup, delivering spark energy directly to the spark plug. This part is engineered to meet OEM specifications for the Nissan Maxima and INFINITI I30, ensuring proper fit and function. Using the correct ignition coil like the 673-4002 helps maintain engine performance and fuel efficiency.

Common Applications and Issues Addressed

• Restores proper ignition spark in Nissan Maxima and INFINITI I30
• Resolves engine misfires caused by faulty ignition coils
• Improves starting reliability and engine smoothness
• Eliminates rough idling and hesitation during acceleration
• Prevents check engine light triggers related to ignition faults

Installation Notes and Tips

When installing the Denso 673-4002 ignition coil, ensure the engine is cool to avoid burns. Disconnect the battery before removal to prevent electrical shorts. Carefully remove the old coil and inspect the spark plug for wear or damage, replacing if necessary. Align the new coil properly on the spark plug and secure it firmly. Reconnect all electrical connectors and test the engine for smooth operation after installation.

Quality Assurance and Warranty

Denso ignition coils, including the 673-4002, are manufactured to meet strict quality standards and OEM specifications. This ensures reliable performance and durability under normal operating conditions. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship.