NGK 3764 Spark Plug

NGK Iridium IX Spark Plug 3764

NGK Iridium IX Spark Plug 3764 is built for drivers who want precise ignition performance and OE-style reliability. With an iridium center electrode, nickel ground electrode, and a 5,000 ohm resistor, this plug supports consistent spark delivery across a wide range of import and domestic applications.

It is a direct-fit spark plug for many vehicles, including Toyota Camry, Subaru Outback, and Mitsubishi Outlander Sport applications that call for the BKR6EIX-11 specification. The pre-gapped 0.044 inch design helps simplify service, while the flat seat and 14 mm thread diameter match the listed applications.

Key Features

• Iridium center electrode tip for stable ignition performance
• Nickel ground electrode with standard single-ground configuration
• 5000 ohm resistor for ignition system noise control
• Pre-gap size: 0.044 in.
• Flat seat, 14 mm thread diameter, 0.75 in. reach
• Heat range 6 for listed OE-style applications
• Cross-reference part number: DENSO Auto Parts 5304

Product Details

NGK’s Iridium IX line focuses on durable ignition components for everyday driving and demanding service intervals. Part number 3764, also identified as BKR6EIX-11, uses an iridium tip at the center electrode to support consistent firing characteristics, while the copper core helps manage heat transfer. The tapered-cut ground electrode tip and standard ground configuration are used to maintain a clean spark path in the applications listed below.

Fits 2021-2024 Mitsubishi Outlander Sport, N/A. Fits 2021-2024 Mitsubishi RVR, N/A. Fits 2011-2027 Toyota Camry, N/A applications listed in the fitment data, along with many other Toyota, Subaru, Lexus, Audi, and Honda models. This part number 3764 is also listed for vehicles such as Subaru Outback, Toyota Highlander, and Mitsubishi Lancer in the confirmed fitment table.

Common Issues This Spark Plug Can Address

• Hard starting caused by worn spark plug electrodes
• Rough idle from inconsistent ignition firing
• Misfire conditions related to plug wear or incorrect gap
• Reduced throttle response from degraded spark quality
• Service intervals affected by aging conventional plugs

Installation Notes and Tips

Verify the vehicle’s required spark plug gap before installation. This plug is listed at 0.044 in. for many applications, but some vehicles require a different gap, including certain Honda, Mercedes-Benz, Mini, Saab, and Dodge applications shown in the fitment data. Use the manufacturer’s specified torque procedure and confirm the correct heat range and seat type before installation.

For best results, compare the vehicle’s OE part number, engine code, and service information against the confirmed fitment list. The NGK 3764 spark plug is used across a broad range of applications, including Toyota Corolla, Subaru Legacy, and Audi A4 Quattro models in the provided data.

Quality Assurance

NGK is a long-established OE supplier and manufacturer with more than 80 years of automotive experience. Its North American and global manufacturing and distribution network supports original-equipment standards for durability and operational performance across automotive, motorcycle, marine, and small engine applications.