Bosch 79176 Spark Plug

Bosch Nickel Spark Plug 79176 Overview

Bosch 79176 is a conventional nickel-copper spark plug built for steady ignition performance and value. It uses a heavy-duty yttrium-enhanced nickel center electrode with a copper core, and it is engineered to meet or exceed original equipment specifications for nickel-copper core spark plugs.

Compatible With Toyota Tacoma, Toyota Tundra, Toyota 4Runner, and Toyota FJ Cruiser applications across the listed model years, this Bosch Nickel spark plug supports dependable secondary ignition service for 4-cycle engines. The Bosch 79176 spark plug is a direct-fit style replacement for drivers maintaining OE-level ignition performance.

Key Features

• Bosch conventional nickel-copper spark plug for secondary ignition service
• Heavy-duty yttrium-enhanced nickel center electrode with copper core
• Nickel center and ground electrode tip materials
• Resistor design with 6000 resistance
• Standard ground electrode tip design with J-gap configuration
• Projected ceramic insulator for consistent spark exposure
• 14 mm thread diameter, 16 mm hex size, flat seat
• Manufacturer heat range 7

Detailed Description

The Bosch Nickel line focuses on practical OE-style ignition service, and part number 79176 follows that approach with a conventional nickel-copper construction. The copper core helps manage heat transfer, while the nickel electrode materials support durable spark delivery in everyday driving conditions. With a resistor design and standard electrode layout, this spark plug is built for stable ignition performance in the specified Toyota applications.

Fits 2005-2015 Toyota Tacoma, N/A; Fits 2005-2011 Toyota Tundra, N/A; Fits 2003-2009 Toyota 4Runner, N/A; Fits 2007-2009 Toyota FJ Cruiser, N/A. Bosch 79176 is a practical replacement choice when servicing ignition systems on Toyota Tacoma, Toyota Tundra, Toyota 4Runner, and Toyota FJ Cruiser models listed in the fitment data.

What It Helps Address

• Hard starting caused by worn spark plug electrodes
• Rough idle from weakened ignition output
• Misfire conditions related to aged spark plugs
• Reduced throttle response from inconsistent spark delivery
• Maintenance replacement for OE-style ignition service

Installation Notes and Tips

Verify the engine application and match the listed thread diameter, reach, seat type, and heat range before installation. Inspect the ignition system, plug wells, and coil boots for wear or contamination, and follow the vehicle manufacturer’s torque specification during installation. Gap is pre-set at the factory, but always confirm the plug condition before use.

Quality Assurance

Bosch engineers this Nickel spark plug to meet or exceed OE specifications for nickel-copper core spark plugs. The 79176 part number is built for consistent fitment and service life in the listed Toyota applications.