Delphi GN10678 Ignition Coil

Delphi GN10678 Ignition Coil

Delphi GN10678 is a coil-on-plug ignition coil built for direct replacement service on select Subaru applications. It draws on Delphi’s OE heritage and decades of supplier experience to deliver the ignition performance expected in modern engine management systems.

Key Features

• Coil-on-plug ignition coil for direct spark delivery
• 3-terminal blade connector with male terminals
• Includes ignition coil and instruction sheet
• OE-informed design based on Delphi’s original equipment experience
• Part number GN10678 for accurate ordering and cross-reference

Application Details

Compatible with 2015 Subaru WRX STI, 2011-2014 Subaru Impreza, 2011-2013 Subaru Forester, and 2010-2012 Subaru Legacy. This ignition coil is a fitment-based replacement for Subaru WRX STI, Subaru Impreza, Subaru Forester, and Subaru Legacy models listed above. Delphi GN10678 also cross-references UF-738 for the same application.

What It Helps Address

• Engine misfire caused by weak or inconsistent spark output
• Rough idle related to ignition coil degradation
• Hard starting tied to failing coil performance
• Loss of acceleration response from intermittent ignition breakdown
• Check engine light conditions associated with ignition coil faults

Installation Notes

Verify connector style, terminal count, and engine application before installation. Delphi GN10678 uses a coil-on-plug layout with a 3-terminal blade connector, so matching the original electrical connection is important for proper fitment on Subaru WRX STI, Impreza, Forester, and Legacy applications. Follow the included instruction sheet and confirm all ignition components are in good condition during service.

Quality Assurance

Delphi builds this ignition coil using OE experience and knowledge developed through long-term supply relationships with major automakers. The GN10678 reflects that original equipment background in an aftermarket replacement part.