Bosch 7975 Spark Plug

Reliable Ignition Performance for Select GM and Ford Vehicles

The Bosch Nickel 7975 spark plug is engineered to deliver consistent ignition performance for a range of 4-cycle engines. Designed with durable materials and precise specifications, this spark plug supports efficient combustion in vehicles such as the Chevrolet Camaro, Ford Mustang, and GMC Suburban.

• Resistance: 6000 ohms for optimal electrical noise suppression
• Ground Electrode Tip Design: Tapered v-profile for improved spark exposure
• Pre-Gap Size: 0.9 mm factory-set for precise ignition timing
• Thread Diameter: 14 mm with 11.2 mm reach for secure fitment
• Center Electrode Material: Nickel-yttrium and copper core for durability
• Ground Electrode Material: Nickel with a single electrode configuration
• Insulator Material: High-quality ceramic with non-projected design
• Seat Type: Tapered for proper sealing and heat dissipation
• Manufacturer Heat Range: 9, suitable for moderate to high operating temperatures

About the Bosch Nickel Spark Plug Line

The Bosch Nickel product line focuses on reliable secondary ignition components that balance durability and performance. The Nickel spark plugs feature nickel-yttrium alloy electrodes and ceramic insulators designed to withstand typical operating conditions in 4-cycle engines. The 7975 part number represents a standard ground configuration spark plug optimized for a variety of GM and Ford models, providing consistent ignition and electrical resistance to reduce radio frequency interference.

Technical Details and Compatibility

The Bosch 7975 spark plug is compatible with multiple makes and models, including Buick, Cadillac, Chevrolet, Dodge, Ford, GMC, Jeep, Mercury, Oldsmobile, and Pontiac. Specific vehicle models supported include the Chevrolet Camaro, Ford Mustang, GMC Suburban series (K1500, K2500), and the Ford Bronco, among others. Its 14 mm thread diameter and 11.2 mm reach ensure proper installation in engines designed for this specification. The tapered seat and 16 mm hex size facilitate secure mounting and removal.

Common Applications and Problem Resolution

• Restores consistent engine starting and smooth idling
• Reduces misfires caused by worn or damaged spark plugs
• Improves fuel efficiency by ensuring complete combustion
• Minimizes radio frequency interference with 6000 ohm resistance
• Prevents fouling in moderate to high heat range engines

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 0.9 mm as specified. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the tapered seat. The 16 mm hex size allows compatibility with standard spark plug sockets. Inspect the spark plug threads and engine cylinder head for cleanliness to ensure proper sealing. Replacement intervals should follow vehicle manufacturer guidelines for optimal performance.

Quality Assurance and Warranty

Bosch spark plugs, including the Nickel 7975, are manufactured to meet strict quality standards with durable materials such as nickel-yttrium alloy electrodes and ceramic insulators. These components are designed to provide reliable ignition performance and electrical resistance. While specific warranty details vary by distributor, Bosch products typically come with a limited warranty covering defects in materials and workmanship.