NGK 49023 Ignition Coil

Reliable Ignition Performance for Nissan, Infiniti, and Rolls-Royce

The NGK COP Ignition Coil 49023 is engineered to deliver consistent ignition performance for a range of vehicles including Nissan 350Z, Altima, Maxima, and Infiniti Q50, QX60 models. Designed as a coil-on-plug (COP) unit, this ignition coil supports distributorless ignition systems operating at 12 volts.

• Voltage: 12V for standard automotive electrical systems
• Ignition Type: Distributorless ignition system compatible
• Coil Type: Coil on plug (COP) design for direct spark delivery
• Terminal Type: Blade terminals with 3 terminal quantity
• Connector Gender: Female connector with male terminals
• Oil Filled: No, dry coil construction
• Mounting Bracket: Not included
• Part Number: U5128 (NGK internal reference)

About the NGK COP Ignition Coil Product Line

The NGK COP Ignition Coil line is designed to provide precise ignition control by integrating the coil directly onto the spark plug. This eliminates the need for high-tension spark plug wires, reducing energy loss and improving ignition reliability. The NGK COP Ignition Coil 49023 is part of this line, offering a direct fit replacement for compatible Nissan, Infiniti, and Rolls-Royce models requiring a distributorless ignition coil solution.

Product Details and Compatibility

This ignition coil is specifically designed for distributorless ignition systems, commonly found in modern Nissan and Infiniti vehicles such as the 350Z, Altima, Maxima, Murano, Pathfinder, and Q50, as well as Rolls-Royce models like the Dawn, Ghost, Phantom, and Wraith. The coil-on-plug design ensures efficient spark delivery directly at the plug, improving combustion efficiency and engine performance. The blade terminal type with three terminals and female connector ensures secure electrical connections. Note that this coil is not oil filled and does not include a mounting bracket, so installation requires the existing bracket or mounting hardware.

Common Applications and Issues Addressed

• Replacement for faulty or worn ignition coils causing misfires
• Resolves rough idling and engine hesitation related to ignition coil failure
• Improves starting reliability in Nissan 350Z, Infiniti QX60, and Rolls-Royce Ghost
• Eliminates ignition coil-related check engine light codes
• Restores proper spark delivery in distributorless ignition systems

Installation Notes and Tips

When installing the NGK COP Ignition Coil 49023, ensure the ignition system is off and the engine is cool. The coil mounts directly onto the spark plug, so verify the spark plug condition before installation. Use the existing mounting bracket or hardware as this coil does not include one. Confirm the blade terminal connections are secure and free of corrosion. Proper installation will maintain the integrity of the distributorless ignition system and ensure optimal engine performance.

Quality Assurance and Warranty

NGK ignition coils are manufactured to meet strict quality standards for durability and performance. The NGK COP Ignition Coil 49023 undergoes rigorous testing to ensure reliable operation under normal driving conditions. While specific warranty details may vary, NGK typically offers a limited warranty against defects in materials and workmanship. Refer to NGK documentation for exact warranty terms applicable to this part.