NGK 48929 Ignition Coil

NGK COP Ignition Coil for Nissan and Infiniti

The NGK COP Ignition Coil, part number 48929, is a direct ignition replacement built for distributorless systems that use coil-on-plug design. It is engineered to meet or exceed OE standards for durability and consistent ignition performance on late-model import applications.

Compatible With 2003-2008 Nissan 350Z, 2003-2007 Infiniti G35, 2003-2008 Infiniti FX35, and 2006-2008 Infiniti M35 applications, this NGK ignition coil supports reliable spark delivery in vehicles that depend on precise coil control. The NGK COP Ignition Coil line reflects NGK’s long OE-focused manufacturing background and testing practices for demanding operating conditions.

Key Features

• 12-volt ignition coil for distributorless ignition systems
• COP (coil-on-plug) design for direct spark delivery
• Female connector with 3 terminals
• Blade terminal type with male terminal gender
• Dry design; not oil filled
• No mounting bracket included
• OE-style replacement for select Nissan and Infiniti vehicles

Detailed Product Overview

NGK part number 48929 is built for vehicles that use a coil-on-plug ignition layout, where each coil mounts directly to the spark plug location. This design helps maintain stable ignition output and consistent engine operation in applications such as the Nissan 350Z and Infiniti G35. The coil is manufactured to OE-level standards and tested under demanding conditions to support dependable performance in everyday driving.

This part cross-references DENSO Auto Parts 673-4025 for the same application.

Common Issues This Coil Can Address

• Engine misfire caused by a weak or failing ignition coil
• Rough idle related to inconsistent spark output
• Hard starting from degraded coil performance
• Loss of acceleration response tied to ignition breakdown
• Check engine light conditions associated with ignition coil faults

Installation Notes and Tips

Verify the connector style, terminal count, and coil-on-plug layout before installation. Inspect the spark plug well, connector, and surrounding ignition components for wear, corrosion, or oil contamination before replacing the coil. For best results, confirm vehicle fitment by year, make, and model before ordering.

Fits 2003-2008 Nissan 350Z, N/A. Fits 2003-2007 Infiniti G35, N/A. Fits 2003-2008 Infiniti FX35, N/A. Fits 2006-2008 Infiniti M35, N/A.

Quality Assurance

NGK develops and tests ignition coils using controlled lab procedures and OE-focused manufacturing standards. Part number 48929 is designed for late-model domestic and import coverage where dependable ignition performance is required.