Denso 3374 Spark Plug

Reliable Ignition Performance for Acura and Honda Vehicles

The Denso U-Groove Conventional spark plug 3374 is engineered to deliver consistent ignition performance for a range of Acura and Honda models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Resistance: 5000 ohms for optimal electrical performance
• Ground Electrode Tip Design: Standard for reliable spark delivery
• Ground Configuration: Thick electrode enhances durability
• Ground Electrode Core Material: Nickel for corrosion resistance
• Center Electrode Core Material: Copper for excellent conductivity
• Center Electrode Tip Material: Nickel for wear resistance
• Pre-Gap Size: 1.1 mm for proper spark gap
• Ground Electrode Quantity: Single electrode design
• Hex Size: 16.0 mm for standard installation tools
• Manufacturer Heat Range: 20 suitable for moderate engine temperatures
• Seat Type: Flat for secure sealing
• Reach: 19.00 mm to fit specified engine designs
• Thread Diameter: 14.00 mm compatible with OEM specifications

About the Denso U-Groove Conventional Spark Plug Line

The U-Groove Conventional line from Denso focuses on delivering dependable ignition components with a traditional electrode design. This product line emphasizes durability and consistent spark performance, making it suitable for everyday driving conditions in vehicles like the Acura MDX and Honda CR-V. The 3374 spark plug maintains the balance between conductivity and wear resistance through its copper center electrode and nickel tips.

Technical Details and Application

The Denso 3374 spark plug is specifically designed for secondary ignition systems in Acura and Honda vehicles, including models such as the Accord, Civic, CR-V, Element, Fit, MDX, RL, RSX, TL, and TSX. Its 5000 ohm resistance helps reduce radio frequency interference while maintaining efficient spark energy. The thick nickel ground electrode and copper center electrode core provide a stable and long-lasting spark, essential for smooth engine operation.

Common Issues Addressed by This Spark Plug

• Misfiring or rough idling in Acura and Honda engines
• Reduced fuel efficiency due to incomplete combustion
• Difficulty starting the engine in cold conditions
• Engine hesitation or loss of power under load
• Excessive emissions caused by poor ignition

Installation Notes and Tips

Ensure the spark plug gap is set to the manufacturer’s recommended 1.1 mm pre-gap before installation. Use a 16 mm socket wrench for proper tightening to avoid damage to the flat seat and threads. Verify compatibility with your specific Acura or Honda model and engine type. It is recommended to replace spark plugs at regular service intervals to maintain optimal engine performance.

Quality Assurance and Warranty

Denso spark plugs, including the U-Groove Conventional 3374, are manufactured to meet strict OEM standards for fit, form, and function. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship. Always consult product documentation or your supplier for exact warranty terms.