NGK 49174 Ignition Coil

NGK COP Ignition Coil Multi-Pack for OE-Style Ignition Repair

NGK Part Number 49174 is a distributorless COP (coil on plug) ignition coil built for late-model domestic and import applications. It is engineered to meet or exceed OE standards for durability and consistent ignition performance, making it a direct-fit choice for vehicles that need reliable spark delivery.

The NGK COP Ignition Coil Multi-Pack line reflects NGK’s focus on ignition system coverage and manufacturing quality. Developed and tested in an ISO 17025 accredited lab, these coils are validated under demanding conditions to support dependable operation in real-world driving.

Key Features

• Distributorless COP (Coil on Plug) ignition coil design
• 12-volt ignition coil for modern engine management systems
• Blade terminal style with 3 terminals
• Female connector gender and male terminal gender
• Oil-filled: No
• Built to meet or exceed OE standards for durability and performance
• NGK Part Number 49174 for catalog and fitment lookup

Detailed Product Overview

NGK 49174 is intended for vehicles using a coil-on-plug ignition setup, where each coil mounts directly to the spark plug for efficient spark transfer. This design supports stable ignition output and helps maintain consistent engine operation across a wide range of late-model applications. It is a strong match for drivers servicing ignition systems on the Chevrolet Trailblazer, GMC Envoy, and Buick Rainier, as well as related platform vehicles such as the Isuzu Ascender, Oldsmobile Bravada, and Saab 9-7x.

This part cross-references Beck/Arnley 178-8390 and Delphi GN10114 for the same application. NGK 49174 is also referenced by OE and aftermarket numbers used across the same vehicle coverage, including Chevrolet Trailblazer and GMC Envoy fitments.

What It Is Used For

• Replacing a failed ignition coil that causes misfires
• Restoring spark output on coil-on-plug ignition systems
• Addressing rough idle or hard-start conditions tied to weak ignition performance
• Correcting engine hesitation under load
• Supporting diagnostic repair when a coil-related fault code is present

Installation Notes and Tips

Verify the connector style, terminal count, and engine application before installation. This coil uses a 12-volt distributorless COP configuration with a 3-terminal blade connection, so matching the original part design is important for proper fitment. Confirm vehicle application by year, make, and model before ordering, especially on 2002-2005 Chevrolet Trailblazer, 2002-2005 GMC Envoy, 2004-2005 Buick Rainier, 2003-2005 Isuzu Ascender, 2002-2004 Oldsmobile Bravada, and 2005 or 2009 Saab 9-7x models.

Quality Assurance

NGK manufactures ignition coils to OE-level standards and validates designs in an ISO 17025 accredited test lab under extreme conditions. That testing approach supports consistent performance and durability across demanding operating environments.