NGK 49123 Ignition Coil

NGK COP Ignition Coil for Subaru WRX and Forester

The NGK COP Ignition Coil, part number 49123, is built for direct ignition performance on select Subaru applications. It uses a coil-on-plug design with 12-volt electronic ignition support and a 3-terminal male blade connection for a clean OE-style replacement.

Fits 2015-2021 Subaru WRX, N/A. Fits 2017-2018 Subaru Forester, N/A.

Key Features

• Coil-on-plug ignition coil for direct spark delivery
• 12-volt electronic ignition design
• 3-terminal male blade connection
• Oil-filled construction: No
• Built to meet or exceed OE standards
• Developed and tested in an ISO 17025 accredited lab

Product Details

NGK ignition coils are engineered for durability and consistent operation across demanding driving conditions. The NGK COP Ignition Coil line reflects more than 80 years of automotive experience and is supported by modern manufacturing, testing, and distribution capabilities. Part number 49123 is part of that product line and is designed for late-model domestic and import coverage, including Subaru WRX and Subaru Forester applications listed above.

This part cross-references Standard Ignition UF-747 and Continental 49123 for the same application.

Common Replacement Reasons

• Engine misfire or rough idle
• Hard starting or intermittent no-start concerns
• Loss of spark output at one cylinder
• Check engine light related to ignition performance
• Weak acceleration caused by coil failure

Installation Notes

Verify the connector style, terminal count, and engine application before installation. This ignition coil uses a 3-terminal male blade connection and is not oil filled. Confirm the vehicle matches the listed Subaru WRX or Subaru Forester fitment before replacing the original coil.

Quality Assurance

NGK manufactures this ignition coil to meet or exceed OE standards and validates coil designs under extreme test conditions in an ISO 17025 accredited laboratory. The brand’s OE legacy and application coverage support confident replacement on the listed Subaru vehicles.