Karlyn 5226 Direct Ignition Coil

Karlyn-STI Direct Ignition Coil Unit 5226

The Karlyn-STI Direct Ignition Coil Unit 5226 is an OE replacement ignition coil for select Nissan and INFINITI V6 applications. It is built for direct ignition systems where consistent spark delivery is critical to smooth engine operation.

Use this ignition coil when servicing misfire-related concerns on vehicles such as the Nissan 370Z and INFINITI G37. The Karlyn-STI direct ignition coil line focuses on direct-fit replacement coverage for late-model import platforms.

Key Features

• Direct ignition coil replacement for select Nissan and INFINITI vehicles
• OE replacement fitment for factory-style service
• Part number 5226 for catalog and service reference
• Coverage for 2008-2020 model years across multiple V6 applications
• Compatible with select 370Z, G37, Q50, Q60, Q70, Q70L, QX50, QX70, Q40, EX37, FX37, FX50, M37, and M56 applications

Detailed Description

Karlyn-STI Direct Ignition Coil Unit 5226 is a direct ignition coil replacement for a wide range of Nissan and INFINITI vehicles equipped with coil-on-plug ignition systems. It is listed for the Nissan 370Z from 2009-2020 and for select INFINITI models including G37, Q50, Q60, Q70, Q70L, QX50, QX70, Q40, EX37, FX37, FX50, M37, and M56. For fitment-specific service, note that some applications require a different coil on the front six cylinders, including certain Q70L, FX50, and M56 configurations.

This part cross-references OE-style ignition coil applications for the same vehicle platforms.

What It Helps Address

• Engine misfire codes
• Rough idle
• Hard starting
• Loss of spark at one cylinder
• Intermittent ignition performance issues

Installation Notes and Tips

• Verify engine position and cylinder location before ordering, especially on applications with front-six-cylinder notes.
• Confirm the original coil part number against the vehicle VIN and engine layout.
• Inspect spark plugs and coil boots during service to avoid repeat ignition faults.
• Clear diagnostic trouble codes after installation and road test the vehicle.

Quality Assurance

Karlyn-STI direct ignition coil coverage is cataloged as an OE replacement solution for the listed Nissan and INFINITI applications. Confirm exact fitment by year, model, and cylinder position before installation.