Denso 3502 Spark Plug

Reliable Ignition Performance for Honda, Jaguar, and Land Rover

The Denso Iridium Long Life spark plug 3502 is engineered to provide consistent ignition and durability for a range of vehicles including Honda Civic and CR-V, as well as Jaguar and Land Rover models. Designed with advanced materials, this spark plug supports efficient combustion and long service intervals.

• Iridium center electrode tip for enhanced durability and ignition
• Platinum chip ground electrode tip for stable spark and wear resistance
• Copper core center electrode for optimal conductivity
• Standard ground configuration with nickel core ground electrode
• Pre-gap size of 0.8 mm for precise spark gap
• Flat seat type with 12 mm thread diameter and 26.50 mm reach
• Hex size of 14.3 mm for easy installation
• Manufacturer heat range of 24 suitable for specified vehicle applications
• Resistance rating of 5000 ohms to reduce electrical noise

About the Denso Iridium Long Life Product Line

The Iridium Long Life series by Denso focuses on delivering extended durability and reliable ignition performance. Featuring iridium-tipped center electrodes, these spark plugs are designed to withstand high temperatures and maintain stable spark delivery over time. The inclusion of a platinum chip on the ground electrode further enhances wear resistance, making the 3502 part number suitable for vehicles requiring long-lasting ignition components.

Technical Details and Compatibility

This spark plug features a copper core center electrode that improves thermal conductivity and electrical performance. The ground electrode uses a nickel core with a platinum chip tip, providing a balance of durability and consistent spark generation. The flat seat design and 12 mm thread diameter ensure proper fitment in compatible engines. With a reach of 26.50 mm and a heat range of 24, this spark plug is engineered to meet the ignition requirements of various Honda, Jaguar, and Land Rover models.

Common Applications and Problem Solving

• Replacement for worn or fouled spark plugs in Honda Civic and CR-V
• Improves ignition stability in Jaguar XE, XF, and F-Type models
• Supports reliable combustion in Land Rover Defender and Range Rover series
• Addresses misfires and rough idling caused by degraded spark plugs
• Helps reduce engine hesitation and poor throttle response

Installation Notes and Tips

• Verify compatibility with your vehicle’s make and model before installation
• Use a torque wrench to tighten the spark plug to manufacturer specifications
• Check and adjust the pre-gap if necessary to maintain the 0.8 mm gap
• Inspect the spark plug threads and seat for proper engagement
• Replace spark plugs in sets to ensure balanced engine performance

Quality Assurance and Warranty

Denso spark plugs, including the Iridium Long Life 3502, are manufactured to meet strict quality standards. The use of iridium and platinum materials ensures durability and consistent performance. While specific warranty details may vary, Denso products typically come with manufacturer-backed quality assurance to support reliable operation in compatible Honda, Jaguar, and Land Rover vehicles.