Delphi GN10453 Ignition Coil

Delphi GN10453 Ignition Coil Overview

Delphi GN10453 is a coil-on-plug ignition coil built for direct replacement service on select Cadillac, Buick, and related applications. It draws on Delphi’s OE experience and aftermarket engineering to support consistent spark delivery in vehicles such as the Cadillac DTS, STS, SRX, XLR, and Buick Lucerne.

Use this ignition coil when you need a replacement for a misfiring cylinder, weak spark output, or an ignition coil that has reached the end of its service life. Delphi GN10453 is built with a pin-style, 4-terminal male connection for the listed applications.

Key Features

• Coil-on-plug ignition coil for direct cylinder-mounted ignition service
• Pin terminal design with 4 male terminals
• Includes ignition coil and instruction sheet
• OE-focused engineering backed by Delphi’s long history supplying automakers
• Cross-references DENSO 673-7301 and Standard Ignition UF-543 for the same application

Detailed Product Description

Delphi GN10453 is an ignition coil designed for vehicles that use a coil-on-plug setup, where the coil mounts directly to the spark plug location. This design helps maintain reliable ignition performance by delivering high-voltage spark at the cylinder level. It is a strong match for drivers searching for a 2007-2011 Buick Lucerne ignition coil, a 2007-2011 Cadillac DTS ignition coil, or a 2007-2010 Cadillac STS ignition coil replacement.

Compatible With 2007-2009 Cadillac SRX, 2007-2009 Cadillac XLR, 2007-2010 Cadillac STS, 2007-2011 Buick Lucerne, and 2007-2011 Cadillac DTS. Part number GN10453 is also referenced in aftermarket catalogs under several interchange numbers, including DENSO 673-7301 and Standard Ignition UF-543.

Common Issues This Part Can Address

• Engine misfire caused by a failing ignition coil
• Rough idle or hesitation during acceleration
• Hard starting related to weak spark output
• Check engine light triggered by ignition coil faults
• Intermittent loss of power from inconsistent cylinder ignition

Installation Notes and Tips

Verify the connector style, terminal count, and engine application before installation. Compare the original coil to Delphi GN10453 to confirm the pin-style, 4-terminal male configuration matches the vehicle’s ignition system. Inspect the spark plug and coil boot area for oil, corrosion, or carbon tracking before installing the replacement coil.

For best results, clear diagnostic trouble codes after installation and confirm proper engine operation under idle and load conditions. If multiple coils show age or wear, inspect the full ignition system to isolate the root cause of the fault.

Quality Assurance

Delphi builds aftermarket parts using OE heritage and knowledge developed through decades of supplying top automakers. That engineering background is reflected in the GN10453 ignition coil’s application-specific design and replacement-focused construction.