NGK 97537 Spark Plug

NGK Racing Spark Plug for Track Use

The NGK Racing Spark Plug, part number 97537, is built for performance-focused ignition setups that demand consistent spark delivery under track conditions. It is a direct fit for select Subaru BRZ, Toyota GR86, Toyota 86, and Scion FR-S applications listed below.

NGK’s Racing Spark Plug line brings together the company’s OE manufacturing background and motorsports-oriented construction for drivers who need stable ignition performance in demanding use. This part number 97537 uses an iridium center electrode tip, platinum ground electrode core material, a copper center electrode core, and a 5000 ohm resistor for controlled electrical performance.

Key Features

• NGK Racing Spark Plug, part number 97537
• Iridium center electrode tip material for precise spark delivery
• Platinum ground electrode core material
• Copper center electrode core material
• 5000 ohm resistance
• Pin-type ground electrode tip design with slant ground configuration
• Flat seat type, 12.00 mm thread diameter, 14 mm hex size
• Manufacturer heat range 9
• Pre-gap size: .028

Detailed Description

This NGK Racing Spark Plug is engineered for select Subaru BRZ and Toyota GR86 applications, along with Toyota 86 and Scion FR-S models listed in the fitment data. The combination of iridium, platinum, and copper electrode materials supports stable ignition characteristics in performance-oriented engines, while the 5000 ohm resistor helps manage electrical noise in the ignition system. If you are searching for an NGK 97537 spark plug for a Subaru BRZ track build or a Toyota GR86 racing plug replacement, this part number is the listed application match.

Compatible With: 2022-2024 Subaru BRZ, 2022-2024 Toyota GR86, 2013-2020 Subaru BRZ, 2017-2020 Toyota 86, and 2013-2016 Scion FR-S. Notes in the fitment data identify several of these applications as racing or track-use-only plugs with a .031" gap reference.

What It Helps Address

• Misfire concerns in performance ignition setups
• Inconsistent spark under higher-load driving conditions
• Ignition performance loss from worn racing plugs
• Track-use maintenance needs for select BRZ, GR86, 86, and FR-S applications
• Electrical interference management in the ignition circuit

Installation Notes and Tips

Verify the listed application, heat range, and gap specification before installation. The fitment notes call out racing or track-use-only service for several model years, so confirm that this plug matches your intended use. Use the correct torque procedure for the cylinder head, and inspect the ignition system, coil condition, and plug wells before installing NGK 97537.

Quality Assurance

NGK is a long-established OE spark plug manufacturer with broad coverage across domestic and import applications. Part number 97537 reflects NGK’s manufacturing focus on durability, original-equipment standards, and consistent ignition performance for automotive use.