Karlyn 20737 Direct Ignition Coil

Karlyn Bremi-STI 20737 Direct Ignition Coil

The Karlyn Bremi-STI 20737 is a direct ignition coil for select Porsche applications, including Porsche 911, Boxster, and Cayman models. It is an OEM replacement ignition coil with an upgraded coil design and 31 mm bolt tabs for the listed fitments.

Key Features

• Direct ignition coil for Porsche ignition system service
• Upgraded coil design with 31 mm bolt tabs
• OEM replacement for listed Porsche applications
• Fits Porsche 911, Boxster, and Cayman models in the specified years
• Part number 20737 for accurate catalog matching

Detailed Description

Built under the Karlyn Bremi-STI line, part number 20737 is a direct ignition coil intended for Porsche vehicles that use this specific coil configuration. The Bremi-STI product line identifies the upgraded coil design and mounting style used on the listed applications, making this a focused replacement choice for Porsche 911 ignition coil service as well as Boxster and Cayman ignition coil replacement work. This part cross-references Bremi-STI 20737 for the same application.

Compatible fitment includes Fits 2001-2009 Porsche 911, N/A; Fits 2011 Porsche 911, N/A; Fits 2005-2008 Porsche Boxster, N/A; and Fits 2006-2008 Porsche Cayman, N/A.

What It Helps Address

• Engine misfire caused by a failing ignition coil
• Rough idle related to weak spark output
• Hard starting from inconsistent ignition performance
• Loss of power under load from coil breakdown
• Check engine light conditions tied to ignition faults

Installation Notes and Tips

Verify the year, model, and coil mounting style before installation. Confirm the 31 mm bolt tab design matches the original part on the vehicle, and compare the connector and mounting points to the removed coil before final assembly. Use the listed Porsche fitment data for 911, Boxster, and Cayman applications to confirm application-specific compatibility.

Quality Assurance

Karlyn Bremi-STI parts are cataloged as OEM replacement components for the specified Porsche applications. Part number 20737 should be matched to the vehicle’s original coil configuration to ensure correct fitment and function.