Denso 3075 Spark Plug

Overview of Denso U-Groove Conventional Spark Plug 3075

The Denso U-Groove Conventional spark plug 3075 is engineered for reliable ignition performance in select Chevrolet, GMC, and Jeep vehicles. Designed with a U-groove ground electrode tip and quality core materials, this spark plug supports efficient combustion and engine operation.

• U-groove ground electrode tip design for improved spark exposure
• Nickel ground electrode core and tip for durability
• Copper center electrode core with nickel tip for optimal conductivity
• Standard ground configuration with a single ground electrode
• Pre-gap size of 0.7 mm for precise ignition timing
• Flat seat type with 14.00 mm thread diameter and 9.50 mm reach
• Hex size of 20.6 mm for installation with common tools
• Manufacturer heat range of 20 suitable for specified vehicle applications

About the U-Groove Conventional Product Line

The Denso U-Groove Conventional spark plug line features a unique U-groove ground electrode tip design that enhances spark exposure to the air-fuel mixture. This design supports stable ignition and combustion efficiency in conventional spark plug applications. The 3075 part number belongs to this line, combining traditional spark plug construction with improved electrode geometry for vehicles requiring standard ground configurations.

Technical Details and Compatibility

This spark plug uses a nickel ground electrode core and tip, paired with a copper center electrode core and nickel tip, balancing durability and electrical conductivity. The pre-gap size of 0.7 mm ensures proper spark gap for ignition timing. With a flat seat and 14.00 mm thread diameter, it fits securely in the combustion chamber. The 9.50 mm reach and 20.6 mm hex size facilitate installation in compatible engines. The heat range 20 rating matches the thermal requirements of engines in Chevrolet Bel Air, Blazer, C10 Suburban, C20 Suburban, Corvette, El Camino, Impala, GMC Jimmy, K10 Suburban, K20 Suburban, and Jeep CJ5 models.

Applications and Problem Solving

• Restores consistent ignition in Chevrolet, GMC, and Jeep vehicles
• Addresses misfires caused by worn or damaged spark plugs
• Improves fuel combustion efficiency and engine responsiveness
• Reduces rough idling and starting difficulties
• Helps maintain engine performance in older model vehicles

Installation Notes and Tips

Ensure the spark plug gap is set to the specified 0.7 mm pre-gap before installation. Use a 20.6 mm socket wrench for proper tightening. Confirm compatibility with your vehicle’s make and model, specifically Chevrolet Bel Air, Blazer, C10 Suburban, C20 Suburban, Corvette, El Camino, Impala, GMC Jimmy, K10 Suburban, K20 Suburban, and Jeep CJ5. Avoid over-tightening to prevent thread damage. Inspect the spark plug seat type to verify it matches the flat seat design.

Quality Assurance and Warranty

Denso manufactures the 3075 spark plug to meet OEM specifications for ignition components. The use of nickel and copper materials ensures durability and reliable conductivity. While specific warranty details are not provided, Denso products typically adhere to strict quality control standards to support long-term engine performance.