Delphi GN10403 Ignition Coil

Delphi GN10403 Ignition Coil for Toyota Corolla

Delphi GN10403 is a standard replacement ignition coil built for electronic, distributorless ignition systems. It is engineered to OE design specifications and endurance tested with high-quality materials to support fast starts, steady engine performance, and efficient fuel use.

Compatible with 1998-1999 Toyota Corolla applications, this Delphi ignition coil is a direct-fit service part for drivers addressing ignition misfire concerns or replacing a worn coil on a distributorless setup.

Key Features

• Part number: GN10403
• 12.0-volt ignition coil
• Electronic ignition type
• Distributorless coil design
• Standard replacement grade
• Black housing
• 1 female elliptical connector
• 4 male terminals
• 2 mounting holes
• Secondary resistance: 9300
• No coil wire included
• No external resistor required

Product Details

Delphi GN10403 is built for vehicles that use a distributorless ignition system, where the coil delivers spark directly through the electronic ignition control strategy. The coil is designed to match OE specifications for consistent electrical performance and dependable operation. Delphi produces more than 10 million ignition coils annually for North America, and this part reflects that OE-focused manufacturing approach.

This ignition coil cross-references Standard Ignition UF-246 for the same application. If you are searching for a Toyota Corolla ignition coil, GN10403 is a direct replacement option for 1998-1999 Toyota Corolla models.

Common Problems This Part Can Address

• Engine misfire caused by a weak or failing coil
• Hard starting or extended crank time
• Rough idle from inconsistent spark output
• Loss of fuel efficiency related to ignition performance
• Check engine light concerns tied to ignition coil failure

Installation Notes

Verify connector shape, terminal count, and mounting style before installation. This coil uses a blade terminal design with a female elliptical connector and two mounting holes, so it should be matched to the original part configuration on the vehicle. Inspect the ignition connectors and surrounding wiring for heat damage or corrosion before installing the new coil.

Fits 1998-1999 Toyota Corolla, N/A.

Quality Assurance

Delphi designs and endurance tests this ignition coil using high-quality materials and OE-based specifications to support reliable ignition performance in everyday service.