Denso 3237 Spark Plug

Reliable Ignition Performance with Denso 3237 Spark Plug

The Denso 3237 spark plug from the U-Groove Conventional line offers consistent ignition performance for a variety of vehicles. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine operation.

• Resistance: 5000 ohms for stable electrical flow
• Ground Electrode Tip Design: Standard for reliable spark delivery
• Ground Electrode Core Material: Nickel for durability
• Center Electrode Core Material: Copper to enhance conductivity
• Center Electrode Tip Material: Nickel for wear resistance
• Pre-Gap Size: 1.1 mm optimized for ignition efficiency
• Ground Electrode Quantity: Single electrode design
• Hex Size: 16.0 mm for standard installation tools
• Manufacturer Heat Range: 14 suitable for moderate engine temperatures
• Seat Type: Flat for secure sealing
• Reach: 19.00 mm to fit specific engine configurations
• Thread Diameter: 14.00 mm compatible with many vehicle engines

About the U-Groove Conventional Spark Plug Line

The U-Groove Conventional series by Denso is engineered to provide dependable ignition with a focus on conventional spark plug design. Featuring a U-shaped groove on the center electrode, this line enhances ignitability and combustion efficiency. The Denso 3237 spark plug benefits from this design approach, offering a balance of performance and durability suitable for various automotive applications.

Technical Details and Application

The Denso 3237 spark plug is constructed with a copper core center electrode to improve thermal conductivity and electrical performance. The nickel ground electrode and tip provide resistance to wear and corrosion, ensuring longevity. With a pre-gap size of 1.1 mm and a heat range of 14, this spark plug is designed to maintain optimal combustion temperatures and reduce fouling. Its flat seat type and 19 mm reach make it compatible with many vehicle engines requiring these specifications.

Common Uses and Problem Solving

• Restores consistent ignition in engines experiencing misfires
• Improves fuel efficiency by ensuring proper spark delivery
• Reduces engine hesitation during acceleration
• Helps prevent fouling in moderate heat range engines
• Supports smooth idling and overall engine performance

Installation Notes and Tips

When installing the Denso 3237 spark plug, ensure the thread diameter of 14.00 mm and reach of 19.00 mm match your vehicle’s specifications. Use a 16 mm socket for proper tightening. Verify the pre-gap size of 1.1 mm before installation and adjust if necessary to meet manufacturer recommendations. Proper torque application is essential to avoid damage to the flat seat and ensure a secure fit.

Quality Assurance and Warranty

Denso manufactures the 3237 spark plug to meet strict quality standards, using high-grade materials such as copper and nickel for electrode construction. While specific warranty details are not provided, Denso products typically adhere to industry quality controls to ensure reliable performance and durability in secondary ignition systems.