NGK 5141 Spark Plug

NGK G-Power Spark Plug 5141 Overview

NGK G-Power Spark Plug 5141 is a direct-fit ignition component built around a platinum center electrode, copper core, and nickel ground electrode for consistent spark delivery. It is a tapered-seat spark plug with a 14 mm thread diameter, 5/8 hex, and a pre-gap of 0.040 inches for applications that call for precise ignition tuning.

The G-Power Spark Plug line combines NGK’s OE-focused manufacturing background with a design aimed at stable performance across a wide range of domestic and import vehicles. Part number 5141 is also referenced as TR6GP.

Key Features

• Platinum center electrode tip for durable spark performance
• Copper core center electrode for efficient heat transfer
• Nickel ground electrode with trapezoid tip design
• 5000 ohm resistance for ignition system compatibility
• Tapered seat, 14 mm thread diameter, 5/8 hex
• Manufacturer heat range 6
• Pre-gapped at 0.040 inches
• Non-removable nut terminal

Detailed Product Description

NGK 5141 is engineered for drivers who need a spark plug that matches OE-style specifications while supporting reliable ignition performance. The platinum tip helps maintain consistent firing characteristics, while the copper core supports heat dissipation under normal engine operating conditions. With a standard ground configuration and a single ground electrode, this plug is built for straightforward replacement service in properly matched applications.

Compatible vehicle coverage includes long-tail searches such as 2009-2015 Cadillac CTS spark plug replacement, 2012-2015 Chevrolet Camaro spark plug replacement, 2006-2013 Chevrolet Corvette spark plug replacement, and 2007-2012 Ford Mustang spark plug replacement. It also applies to additional Ford, Mercury, Mazda, Pontiac, and Aston Martin applications listed in the fitment data. This part cross-references Autolite AP103 for the same application.

What It Helps Address

• Rough idle caused by worn spark plugs
• Hard starting from weak or inconsistent spark output
• Misfire conditions tied to aged ignition components
• Reduced throttle response from degraded plug performance
• Maintenance replacement for OE-style ignition service

Installation Notes and Tips

Verify the vehicle-specific gap before installation, since listed applications call for different settings such as 0.040, 0.044, 0.050, 0.052, or 0.054 inches depending on the engine and model year. Use the correct torque procedure for the tapered-seat design and confirm the plug matches the engine’s thread diameter, reach, and heat range before service. For fitment examples, this plug fits 2009-2015 Cadillac CTS, 2012-2015 Chevrolet Camaro, 2006-2013 Chevrolet Corvette, and 2007-2012 Ford Mustang.

Quality Assurance

NGK is a major OE spark plug supplier with decades of automotive manufacturing experience and a broad North American coverage footprint. Part number 5141 is produced to support original-equipment standards for durability and operational consistency across the listed applications.