NGK 1266 Spark Plug

NGK V-Power Spark Plug 1266 Overview

NGK V-Power Spark Plug 1266 is a copper-core ignition component built for stable combustion and dependable secondary ignition performance. It uses a standard ground electrode design, a nickel center electrode tip, and a 5,000 ohm resistor to help control electrical noise in the ignition system.

The NGK V-Power Spark Plug line focuses on OE-style fit and consistent operation across a wide range of domestic and import vehicles. Part number 1266, also identified as BCPR5EY, is specified for select Saab 900, Toyota Corolla, Toyota Celica, Toyota 4Runner, and Geo Prizm applications.

Key Features

• Copper center electrode core for reliable spark transfer
• Nickel center and ground electrode tip materials
• 5,000 ohm resistor for radio-frequency interference control
• Standard ground configuration with one ground electrode
• Flat seat design with 14.00 mm thread diameter and .75 reach
• Pre-gapped at .036 inches; verify against vehicle specification before installation
• NGK part number 1266 / BCPR5EY

Detailed Description

NGK 1266 is a V-Power spark plug engineered with a copper core and nickel electrode construction to support consistent ignition performance in everyday driving conditions. The standard ground electrode tip design and flat seat configuration align with OE-style service requirements, while the 5,000 ohm resistance helps reduce ignition noise. With a 5/8 hex, 14.00 mm thread diameter, and .75 reach, this spark plug is built for specific engine applications that call for those dimensions.

Fitment includes 1992-1994 Saab 900, 1988-1993 Toyota Celica, 1990-1992 Geo Prizm, 1990-1992 Toyota Corolla, 1988 Toyota Corolla, 1988-1989 Toyota Corolla, and 1988 Toyota 4Runner. This part cross-references FEL-PRO 416 and 1266 for the same application.

What It Helps Address

• Hard starting caused by worn spark plugs
• Rough idle from inconsistent spark delivery
• Misfire conditions related to aged ignition components
• Reduced throttle response from weak combustion
• Ignition noise concerns in the electrical system

Installation Notes and Tips

Confirm the engine’s required gap before installation; listed fitment notes call for 0.028 inches on Saab 900 applications and 0.032 inches on several Toyota and Geo applications. Use the vehicle service specification for final gap setting, and inspect plug condition, threads, and coil or wire connections during replacement. Verify the heat range, reach, and seat type match the engine before installation.

Quality Assurance

NGK is a long-standing OE supplier with broad coverage across automotive, motorcycle, marine, and small engine applications. Part number 1266 is produced to support original-equipment standards for durability and operational consistency.