NGK 3967 Spark Plug

NGK Standard Spark Plug for Toyota and Lexus

NGK Standard Spark Plug 3967 is built for OE-style ignition performance in a wide range of Toyota, Lexus, and Chevrolet applications. This plug uses a copper center electrode, nickel tip materials, and a standard ground design to support consistent spark delivery for everyday driving.

Key Features

• NGK Standard Spark Plug, part number 3967
• Part number BKR5EKB-11 with a 0.044 in pre-gap size
• Copper center electrode core with nickel center and ground electrode tip materials
• Standard ground configuration with two ground electrodes
• 5,000 ohm resistance for ignition system compatibility
• 14 mm thread diameter, 0.75 in reach, and flat seat design
• Compatible with Toyota Tacoma, Toyota Tundra, Toyota 4Runner, Toyota Corolla, Toyota Paseo, Toyota Tercel, Toyota T100, Toyota Supra, Lexus GS300, Lexus SC300, and Chevrolet Prizm applications

Product Details

NGK’s Standard Spark Plug line focuses on OE-level construction and broad vehicle coverage for domestic and import applications. Part number 3967 is engineered with a copper core for dependable heat transfer, nickel electrode materials for stable firing characteristics, and a non-removable nut terminal for standard ignition wire connection. The 5/8 hex size, flat seat, and 0.044 inch gap specification align with common factory service requirements on many Toyota and Lexus engines.

This part cross-references Anchor 3194 for the same application.

Used For

• Misfire diagnosis tied to worn or fouled spark plugs
• Hard starting caused by weak spark output
• Rough idle from inconsistent ignition performance
• Reduced fuel economy related to degraded plug condition
• Factory-service replacement on Toyota Tacoma, Toyota Tundra, and Lexus GS300 applications

Installation Notes

Verify the engine application before installation and confirm the plug gap is set to 0.044 inches where required by the OE service specification. Check the thread reach, seat type, and terminal style against the original plug before installation. Use the vehicle service manual for torque and ignition system procedures, especially on Toyota Tacoma, Toyota Tundra, and Toyota 4Runner models.

Quality Assurance

NGK is a long-established OE supplier with extensive North American coverage for domestic and import ignition applications. Part number 3967 is manufactured to support original-equipment service standards for durability and consistent operation.