Delphi GN10421 Ignition Coil

Delphi GN10421 Ignition Coil for Honda and Acura

The Delphi GN10421 ignition coil is a coil-on-plug replacement built for direct ignition service on select Honda and Acura applications. It combines OE-based engineering with a 3-terminal male blade connection for a straightforward replacement on the vehicles listed below.

Key Features

• Coil-on-plug ignition coil for direct spark delivery
• Blade terminal type with 3 male terminals
• Includes ignition coil and instruction sheet
• OE heritage informed by Delphi’s long history supplying automakers
• Cross-references with select aftermarket part numbers for the same application

Detailed Description

Delphi GN10421 is an ignition coil designed for Honda Civic, Honda HR-V, and Acura ILX applications where a coil-on-plug design is used. As an OE-style replacement, it is built around Delphi’s experience supplying original equipment to major automakers, with attention to fit, electrical connection, and ignition performance. If you are replacing a failing ignition coil on a 2012-2015 Honda Civic, 2013-2015 Acura ILX, or 2016-2022 Honda HR-V, this part number GN10421 is a direct match for the listed applications.

This part cross-references Standard Ignition UF-672 and Beck/Arnley 178-8525 for the same application.

Vehicle Fitment

• Fits 2016-2022 Honda HR-V, N/A
• Fits 2013-2015 Acura ILX, N/A
• Fits 2012-2015 Honda Civic, N/A

What It Helps Address

• Engine misfire caused by a weak or failed ignition coil
• Rough idle related to inconsistent spark output
• Hard starting from poor ignition performance
• Check engine light conditions tied to ignition coil faults
• Loss of acceleration response from intermittent spark delivery

Installation Notes and Tips

Verify the connector style, terminal count, and engine application before installation. The Delphi GN10421 uses a 3-terminal male blade connection and a coil-on-plug layout, so the original coil should be matched carefully to the vehicle’s ignition system. Inspect the coil boot, connector, and surrounding spark plug condition during replacement to help prevent repeat ignition issues.

Quality Assurance

Delphi builds aftermarket ignition components using OE experience and application knowledge developed through long-term supplier relationships with major automakers. That background is reflected in the GN10421’s design and fitment focus for Honda and Acura ignition service.