NGK 7159 Spark Plug

NGK G-Power Spark Plug 7159 Overview

NGK G-Power Spark Plug 7159 is an OE-style ignition component built for consistent spark delivery and dependable secondary ignition performance. With a platinum center electrode, nickel ground electrode, and 5,000 ohm resistance, this plug supports stable operation across a wide range of Ford, Mazda, Mercury, and other applications.

The NGK G-Power Spark Plug line combines OE-focused construction with a tapered seat, 14 mm thread diameter, .708 reach, and a pre-gap size of .060. Part number 7159 is a practical choice for drivers servicing vehicles such as the Ford Ranger, Ford F-150, and Ford Mustang where correct heat range and gap specification matter.

Key Features

• NGK G-Power Spark Plug, part number 7159
• Platinum center electrode tip for consistent ignition performance
• Copper center electrode core and nickel ground electrode core
• 5,000 ohm resistance for secondary ignition control
• Tapered seat, 14 mm thread diameter, and 5/8 hex size
• Pre-gap size of .060 with a trapezoid ground electrode tip design
• OE-equivalent design for a broad range of domestic and import applications

Product Details

NGK has a long OE supply history and manufactures spark plugs for a wide range of automotive applications. The G-Power Spark Plug series is built to maintain original equipment standards while delivering the durability and operational consistency expected in daily driving and scheduled maintenance. This plug is listed under NGK part number 7159 and TR55-1GP, and it cross-references Bosch 6715 for the same application.

Fitment coverage includes long-tail applications such as 2001-2011 Ford Ranger spark plug replacement, 2005-2008 Ford F-150 spark plug replacement, 2005-2010 Ford Mustang spark plug replacement, and 2006-2010 Ford Explorer spark plug replacement. It also applies to vehicles including the Mazda B4000, Mercury Mountaineer, and Land Rover LR3 where the specified gap and seat type match the OE requirement.

Common Uses

• Restoring weak spark or inconsistent combustion
• Replacing worn plugs during scheduled tune-up service
• Addressing rough idle caused by aged ignition components
• Maintaining proper ignition performance in high-mileage vehicles
• Servicing Ford Ranger, Ford F-150, and Ford Mustang applications with OE-style specifications

Installation Notes

Verify the vehicle’s required spark plug gap before installation. This plug is listed with a .060 pre-gap size, while many fitments note a 0.054-inch or 0.050-inch service specification in the application data. Confirm the correct gap for the exact year, make, and model before use, and inspect the ignition system, plug wires, and coil condition during service. Use the tapered seat and 14 mm thread specification to confirm proper cylinder head match.

Quality Assurance

NGK is a major OE spark plug supplier with more than 80 years of automotive manufacturing experience. The brand’s North American and global production and distribution network supports consistent product availability and OE-focused quality control for ignition service parts.