Denso 4111 Spark Plug

Reliable Ignition with Denso U-Groove Conventional Spark Plug 4111

The Denso U-Groove Conventional Spark Plug 4111 is engineered to deliver consistent ignition performance for a variety of vehicles. Designed with a unique U-groove ground electrode tip, this spark plug supports efficient combustion and reliable engine operation.

• U-groove ground electrode tip design for improved spark exposure
• Nickel ground electrode core and center electrode tip for durability
• Copper center electrode core material for optimal conductivity
• Standard ground configuration with a single ground electrode
• Pre-gap size of 0.9 mm for precise spark gap
• Flat seat type with 19 mm reach and 12 mm thread diameter
• Hex size of 18 mm for easy installation
• Manufacturer heat range of 27 suitable for various engine conditions
• Resistance rating of 5000 ohms to reduce electrical noise

Detailed Features of the U-Groove Conventional Spark Plug

The Denso U-Groove Conventional spark plug 4111 features a U-groove ground electrode tip design that increases the spark exposure area, promoting better ignition and combustion efficiency. The ground electrode is constructed with a nickel core, providing durability and resistance to wear. The center electrode combines a copper core for excellent thermal conductivity with a nickel tip to withstand high temperatures and corrosion. This spark plug has a standard single ground electrode configuration and a pre-gap size of 0.9 mm, ensuring consistent spark delivery. Its flat seat type and 19 mm reach make it compatible with many vehicle engines requiring these specifications. The 12 mm thread diameter and 18 mm hex size facilitate straightforward installation using common tools. With a manufacturer heat range of 27 and a resistance of 5000 ohms, this spark plug is designed to reduce electrical interference and maintain stable ignition performance.

About the U-Groove Conventional Product Line

The Denso U-Groove Conventional line focuses on spark plugs with a distinctive U-groove ground electrode tip design. This design enhances spark exposure compared to traditional plugs, which can improve combustion efficiency and engine responsiveness. The conventional construction balances durability and performance, making it suitable for a range of vehicles that require reliable secondary ignition components.

Applications and Common Issues Addressed

• Replacement for worn or fouled spark plugs in compatible vehicles
• Resolving misfires caused by inconsistent spark delivery
• Improving fuel efficiency through better combustion
• Reducing engine hesitation and rough idling
• Minimizing electrical noise interference in ignition systems

Installation Notes and Tips

Ensure the spark plug gap is set to the specified 0.9 mm pre-gap before installation if adjustment is necessary. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the threads or seat. The 18 mm hex size allows for compatibility with standard spark plug sockets. Verify compatibility with your vehicle’s engine specifications, particularly thread diameter (12 mm) and reach (19 mm), to ensure proper fitment.

Quality Assurance and Warranty

Denso spark plugs, including the U-Groove Conventional 4111, are manufactured to meet strict quality standards for durability and performance. The materials used, such as nickel and copper electrodes, are selected for their resistance to wear and thermal stress. While specific warranty details are not provided here, Denso products typically come with manufacturer-backed quality assurance to support reliable operation in secondary ignition systems.