Denso 3449 Spark Plug

Reliable Ignition Performance for Suzuki Vehicles

The Denso Iridium Long Life spark plug 3449 is engineered to provide consistent ignition and durability for Suzuki Esteem, Grand Vitara, Vitara, and XL-7 models. Designed with advanced materials, this spark plug supports efficient combustion and long-term engine reliability.

• Iridium center electrode tip for enhanced durability and stable ignition
• Platinum chip ground electrode tip to improve wear resistance
• Copper core center electrode for optimal conductivity
• Standard ground configuration with a single ground electrode
• Flat seat type with a 14.00 mm thread diameter and 19.00 mm reach
• Pre-gap size of 1.1 mm for precise spark delivery
• Hex size of 16.0 mm for standard installation tools
• Manufacturer heat range rating of 20 for balanced thermal performance

About the Iridium Long Life Product Line

The Denso Iridium Long Life series focuses on combining iridium's high melting point and wear resistance with advanced electrode designs to extend spark plug service intervals. This product line is tailored to maintain ignition efficiency over time, reducing the need for frequent replacements while supporting stable engine operation in compatible Suzuki models.

Technical Details and Features

The Denso 3449 spark plug features an iridium center electrode tip, which offers a fine wire design that requires less voltage to produce a strong spark. The copper core center electrode enhances electrical conductivity, improving ignition response. The ground electrode incorporates a platinum chip tip, which increases electrode life by resisting erosion. The single ground electrode with a standard configuration ensures consistent spark gap maintenance. With a pre-gap size of 1.1 mm and a flat seat design, this spark plug fits securely and delivers reliable combustion. The 16.0 mm hex size allows for easy installation using common tools, while the 14.00 mm thread diameter and 19.00 mm reach ensure proper fitment in Suzuki Esteem, Grand Vitara, Vitara, and XL-7 engines.

Applications and Problem Solving

• Restores stable ignition in Suzuki Esteem and Grand Vitara engines
• Reduces misfires and rough idling in Vitara and XL-7 models
• Improves fuel efficiency by ensuring complete combustion
• Minimizes electrode wear for extended spark plug life
• Helps maintain engine performance under varied driving conditions

Installation Notes and Tips

Ensure the spark plug gap is set to the specified 1.1 mm pre-gap before installation. Use a 16.0 mm socket wrench for proper tightening to avoid damage to the electrode or threads. Confirm compatibility with Suzuki Esteem, Grand Vitara, Vitara, or XL-7 models prior to installation. Follow manufacturer torque specifications to secure the spark plug without over-tightening.

Quality Assurance and Warranty

Denso spark plugs are manufactured to meet strict quality standards for ignition components. The Iridium Long Life 3449 spark plug undergoes rigorous testing to ensure durability and consistent performance. Warranty coverage details should be confirmed with the original equipment manufacturer or authorized distributor.