Denso 5330 Spark Plug

Reliable Ignition Performance for Select GM and Ford Vehicles

The Denso Iridium Power 5330 spark plug is engineered to deliver consistent ignition and improved combustion efficiency. Designed for use in a wide range of vehicles including Buick, Chevrolet, Ford, and GMC models, this spark plug supports optimal engine performance and fuel economy.

• Iridium center electrode tip for enhanced durability and precise spark
• Tapercut, u-groove ground electrode tip design for improved ignitability
• Copper core center electrode for efficient heat dissipation
• Nickel ground electrode core material with standard ground configuration
• Pre-gap size of 1.1 mm and tapered seat type for secure fitment
• 16 mm hex size and 14 mm thread diameter for compatibility with specified engines
• Manufacturer heat range of 16 suitable for various driving conditions
• Reach length of 11.60 mm ensuring proper installation depth

About the Denso Iridium Power Spark Plug Line

The Iridium Power line from Denso focuses on delivering spark plugs with iridium-tipped center electrodes, which provide a fine electrode tip for precise spark generation. This design contributes to improved throttle response and smoother engine operation. The 5330 model incorporates these features along with a copper core center electrode to balance durability and thermal conductivity, making it suitable for secondary ignition systems in many domestic vehicles.

Technical Details and Compatibility

The Denso 5330 spark plug features a single ground electrode with a tapercut and u-groove tip design, enhancing ignitability and combustion efficiency. The nickel ground electrode core and copper center electrode core materials ensure reliable conductivity and heat management. With a pre-gap size of 1.1 mm and a tapered seat type, this spark plug fits securely in engines requiring a 14 mm thread diameter and 11.60 mm reach. Compatible with a broad range of vehicles including Chevrolet Camaro, Ford Mustang, GMC Sierra, Buick Century, and Cadillac DeVille, this spark plug supports secondary ignition systems across multiple makes and models.

Common Applications and Issues Addressed

• Replacement for worn or fouled spark plugs in Buick, Chevrolet, Ford, and GMC vehicles
• Improves engine misfire and rough idle conditions
• Helps restore fuel efficiency and smooth acceleration
• Reduces ignition system wear by providing consistent spark
• Supports reliable cold starts and overall engine responsiveness

Installation Notes and Tips

Ensure the engine is cool before removing old spark plugs. Use a torque wrench to install the Denso 5330 spark plug to the manufacturer’s recommended torque specifications to avoid damage. Verify the pre-gap size of 1.1 mm before installation, adjusting if necessary. The 16 mm hex size allows for standard spark plug socket compatibility. Proper installation ensures optimal performance and longevity.

Quality Assurance and Warranty

Denso spark plugs are manufactured to meet strict quality standards for durability and performance. The Iridium Power 5330 spark plug undergoes rigorous testing to ensure consistent ignition and heat resistance. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship.