Standard UF543T Ignition Coil

Ignition Coil for GM V8 Applications

Standard UF543T is a coil-on-plug ignition coil assembly built for direct replacement service on select Buick, Cadillac, and other GM applications. It is engineered for stable high-voltage output, consistent spark delivery, and dependable operation across a wide range of engine speeds.

Key Features

• Complete coil-on-plug assembly for direct ignition service
• Female connector with 1 connector and 4 blade terminals
• Neodymium core for strong magnetic field and high voltage output
• High dielectric epoxy helps resist moisture intrusion and thermal breakdown
• Reinforced bobbins help reduce voltage flashover
• Built to OE-quality standards with in-process quality control

Detailed Description

The Standard UF543T ignition coil is designed for vehicles that require a reliable coil-on-plug replacement with consistent electrical performance. Its internal construction uses a neodymium core to support strong magnetic field generation, while vacuum-injected epoxy helps protect internal components from air pockets, moisture, and heat-related breakdown. This makes the UF543T a practical choice for maintaining proper ignition performance on applications such as the 2007-2011 Buick Lucerne, 2007-2011 Cadillac DTS, 2007-2010 Cadillac STS, 2007-2009 Cadillac SRX, and 2007-2009 Cadillac XLR.

This part cross-references Delphi GN10453 and DENSO Auto Parts 673-7301 for the same application. Standard UF543T is also referenced by Standard Ignition UF-543.

Common Issues This Part May Resolve

• Engine misfire caused by weak or inconsistent spark output
• Rough idle related to ignition coil failure
• Hard starting from degraded coil performance
• Loss of power under acceleration due to ignition breakdown
• Check engine light conditions tied to coil circuit faults

Installation Notes and Tips

Verify connector style, terminal count, and engine application before installation. This UF543T ignition coil uses a female connector, 1 connector, and 4 blade terminals, so matching the electrical interface is important for proper fitment. Inspect the spark plug and related ignition components during service, since worn plugs can place added stress on the coil.

Compatible With 2007-2011 Buick Lucerne, 2007-2011 Cadillac DTS, 2007-2010 Cadillac STS, 2007-2009 Cadillac SRX, and 2007-2009 Cadillac XLR. For vehicle-specific confirmation, match the part number UF543T to the original coil design before installation.

Quality Assurance

Standard manufactures this ignition coil as a tier I OE supplier with complete quality control from component selection through finished product. The UF543T is built to meet high manufacturing standards for long service life and dependable ignition performance.