Delphi GN11121 Ignition Coil

Delphi GN11121 Ignition Coil Overview

The Delphi GN11121 ignition coil is a standard replacement pencil coil built for 12-volt 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 2017 Ford F-150 and 2017 Ford Mustang applications, this Delphi ignition coil is a direct-fit service part for vehicles using a 3-pin sealed connector and blade terminals.

Key Features

• Part number: GN11121
• Standard replacement ignition coil for OE-style service
• Pencil coil design with black and gray housing
• 12-volt operation
• 3-pin sealed connector with female connector gender
• Blade terminals, 2 terminals total
• Single mounting hole design with mounting holes mount type
• No external resistor required
• No coil wire included and no mounting hardware included

Detailed Description

Delphi GN11121 is built for drivers and technicians replacing a worn ignition coil on select Ford applications. It uses a pencil coil layout, a 0.69 primary resistance rating, and a standard ignition design to support consistent spark delivery. Delphi manufactures more than 10 million ignition coils annually for North America, and this part is produced to OE design specifications for a wide range of vehicle platforms, including Ford.

This part cross-references Standard Ignition UF824 for the same application. If you are servicing a 2017 Ford F-150 or 2017 Ford Mustang, GN11121 provides a direct replacement option that matches the original connector and terminal style.

Common Problems This Part Can Address

• Hard starting caused by a weak or failing ignition coil
• Engine misfire under load or during acceleration
• Rough idle from inconsistent spark output
• Poor fuel economy related to ignition performance loss
• Check engine light concerns tied to coil failure codes

Installation Notes and Tips

Verify connector shape, terminal count, and coil mounting style before installation. Inspect the coil boot, wiring, and spark plug condition at the same time to avoid repeat repairs. Confirm the vehicle uses a 3-pin sealed connector and blade terminals, and replace the coil only after the ignition system has been diagnosed.

Quality Assurance

Delphi designs and endurance tests this ignition coil using quality materials to help maintain OE-level fit and performance characteristics. The GN11121 is engineered for standard replacement service on confirmed Ford applications.