NGK 91276 Spark Plug

Reliable Ignition Performance for Select Vehicles

The NGK Ruthenium HX High Ignitability Spark Plug (Part Number 91276) is engineered to deliver consistent ignition and improved combustion efficiency. Designed for a range of vehicles including Ford F-150, Chevrolet Camaro, Mazda CX-9, and Cadillac CTS, this spark plug supports reliable engine starts and smooth operation.

• Dual fine ground electrode tip for high ignitability
• Ruthenium center electrode tip for enhanced durability
• Copper core center electrode for efficient conductivity
• Standard ground configuration with nickel core electrode
• Non-removable nut electrical terminal type
• Pre-gap size of 0.044 inches for optimal spark
• Tapered seat type with 14mm thread diameter and 25mm reach
• Manufacturer heat range rating of 6
• Hex size of 5/8 inch for installation

About the Ruthenium HX High Ignitability Spark Plug Line

The Ruthenium HX High Ignitability Spark Plug line from NGK focuses on delivering improved ignition performance through advanced electrode design. Featuring a ruthenium center electrode tip combined with a dual fine ground electrode tip, this product line enhances spark efficiency and durability. The 91276 spark plug benefits from these design elements to support better combustion and engine responsiveness in compatible vehicles.

Technical Details and Features

This spark plug incorporates a copper core center electrode that ensures excellent electrical conductivity, paired with a ruthenium tip that resists wear and maintains consistent spark quality over time. The ground electrode uses nickel core material with a dual fine electrode tip design, which contributes to high ignitability and efficient combustion. The plug’s resistance is rated at 5000 ohms, helping to reduce electrical noise and protect ignition components.

Compatible Vehicles and Applications

• Designed for use in select Buick, Cadillac, Chevrolet, Ford, GMC, Lincoln, Mazda, Pontiac, Saab, Saturn, and Suzuki models
• Compatible with vehicles such as Ford F-150, Chevrolet Camaro, Mazda CX-9, Cadillac CTS, and more
• Suitable for secondary ignition system replacement

Common Issues Addressed by NGK 91276 Spark Plug

• Engine misfires and rough idling
• Difficulty starting the engine
• Reduced fuel efficiency due to incomplete combustion
• Loss of engine power and acceleration
• Ignition system electrical interference

Installation Notes and Tips

When installing the NGK 91276 spark plug, ensure the tapered seat is clean and free of debris for proper sealing. Use a torque wrench to tighten the plug to manufacturer specifications to avoid damage. The 5/8 inch hex size allows for standard spark plug socket compatibility. Verify the pre-gap size of 0.044 inches before installation, adjusting if necessary to match vehicle requirements.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Ruthenium HX High Ignitability Spark Plug line undergoes rigorous testing for heat range, electrode wear, and electrical resistance. Part number 91276 is backed by NGK’s quality assurance protocols, providing confidence in fitment and function for compatible Buick, Cadillac, Chevrolet, Ford, Mazda, and other vehicles.