NGK 3351 Spark Plug

NGK G-Power Spark Plug 3351 Overview

NGK G-Power Spark Plug 3351 is built for drivers who need a direct-fit ignition service part with OE-focused construction. This NGK spark plug combines a platinum center electrode tip, copper core, nickel ground electrode, and a 5,000-ohm resistor to support stable ignition performance across a wide range of older domestic applications.

Compatible With Chevrolet S10, Pontiac Sunbird, Ford Pinto, and other listed vehicles, this G-Power spark plug is a practical choice when replacing worn plugs on engines that call for a flat seat, 14 mm thread diameter, 0.75-inch reach, and 13/16-inch hex.

Key Features

• NGK G-Power Spark Plug line for OE-style ignition service
• Platinum center electrode tip for durable firing performance
• Copper core center electrode for efficient heat transfer
• Nickel ground electrode with standard configuration
• 5,000-ohm resistor to help control electrical noise
• Pre-gapped at .040 inches
• Flat seat design with 14.00 mm thread diameter and .75 reach
• 13/16 hex size and non-removable nut terminal

Product Details

NGK part number 3351, also identified as GR5GP, is part of the G-Power Spark Plug line and reflects NGK’s long history as an OE supplier for domestic and import vehicles in North America. The plug uses a platinum tip on the center electrode, paired with a copper core and nickel ground electrode, to support consistent spark delivery and dependable service in the applications listed below. This part cross-references CR5CXLS for the same application.

For fitment-based searches, this NGK 3351 spark plug is listed for vehicles such as 1982-1985 Chevrolet S10, 1986-1990 Pontiac Sunbird, and 1971-1976 Ford Pinto, with gap requirements varying by application. Always verify the engine’s specified gap before installation.

Common Issues This Part Can Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent spark delivery
• Misfire symptoms related to aged ignition components
• Reduced throttle response from degraded plug performance
• Maintenance replacement for vehicles calling for NGK 3351

Installation Notes and Tips

Confirm the vehicle’s required spark plug gap before installation, since listed applications call for different settings including 0.030, 0.034, 0.035, 0.040, and 0.045 inches. Verify the engine uses a flat-seat plug with 14 mm threads, .75 reach, and a 13/16-inch hex before service. Use the manufacturer-specified torque procedure for the engine being serviced and inspect ignition wires, coils, and plug boots during replacement.

Quality Assurance

NGK is a major OE spark plug supplier with more than 80 years of automotive experience and broad coverage across automotive, motorcycle, marine, and small engine applications. Part number 3351 is manufactured to support original-equipment standards for durability and operational performance in the listed fitments.