Bosch 7976 Spark Plug

Reliable Ignition Performance for Select GM Vehicles

The Bosch Nickel 7976 spark plug is engineered to deliver consistent ignition performance for a range of Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models. Designed specifically for 4-cycle engines, this spark plug supports efficient combustion and reliable engine operation.

• Resistance: 6000 ohms for optimal electrical noise suppression
• Ground Electrode Tip Design: Tapered v-profile for precise spark delivery
• Center Electrode Core Material: Nickel-yttrium and copper for durability
• Ground Electrode Tip Material: Nickel-chromium for enhanced wear resistance
• Pre-Gap Size: 1 mm for proper spark gap
• Thread Diameter: 14 mm with 11.2 mm reach and tapered seat type
• Hex Size: 16 mm for standard installation tools
• Manufacturer Heat Range: 9 suitable for moderate to high operating temperatures
• Insulator Material: Ceramic with non-projected design for reliable insulation
• Resistor: Yes, to reduce electromagnetic interference

About the Bosch Nickel Spark Plug Line

The Bosch Nickel product line focuses on spark plugs with nickel-based electrodes, providing a balance of durability and cost-effectiveness. The Nickel 7976 spark plug features nickel-yttrium and copper center electrodes combined with nickel-chromium ground electrodes, designed to maintain stable ignition and resist electrode wear over time. This line is suitable for a variety of GM vehicles requiring reliable secondary ignition components.

Technical Details and Compatibility

The Bosch 7976 spark plug is compatible with multiple GM makes and models, including Buick LeSabre, Chevrolet Camaro, Monte Carlo, GMC S10, Oldsmobile Cutlass Ciera, and Pontiac Firebird, among others. Its 14 mm thread diameter, 11.2 mm reach, and tapered seat ensure proper fitment and sealing in the combustion chamber. The 16 mm hex size allows for straightforward installation using common tools.

Common Applications and Problem Resolution

• Restores consistent spark delivery in Buick, Chevrolet, GMC, Oldsmobile, and Pontiac 4-cycle engines
• Addresses misfires caused by worn or damaged spark plugs
• Reduces electromagnetic interference with built-in resistor
• Improves engine start-up reliability and smooth idling
• Helps maintain fuel efficiency by ensuring proper combustion

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 1 mm as specified. Use a 16 mm socket wrench for removal and installation. Ensure the tapered seat is clean and free of debris to achieve a proper seal. Torque the spark plug to manufacturer specifications to avoid damage to the threads or combustion chamber. The Bosch 7976 spark plug is designed for 4-cycle engines and is not intended for outdoor power equipment.

Quality Assurance and Warranty

Bosch manufactures the 7976 spark plug to meet strict quality standards, using durable materials such as nickel-yttrium and copper for the center electrode and nickel-chromium for the ground electrode. The ceramic insulator provides reliable electrical insulation under high temperatures. While specific warranty details are not provided, Bosch products typically adhere to industry quality controls to ensure consistent performance and longevity.