Denso 4705 Spark Plug

Reliable Ignition Performance for Lexus and Toyota Vehicles

The Denso Iridium TT spark plug 4705 is engineered to deliver consistent ignition and efficient combustion for a range of Lexus and Toyota models. Designed with advanced materials and a multi-electrode configuration, this spark plug supports smooth engine operation and improved fuel efficiency.

• Iridium center electrode tip for enhanced durability and precise ignition
• Platinum twin-tip ground electrode design with three electrodes for stable spark
• Copper core center electrode for optimal conductivity
• Flat seat type with 14mm thread diameter and 26.5mm reach for proper fitment
• Pre-gap size of 1.0 mm to ensure correct spark gap
• Manufacturer heat range rating of 20 for balanced thermal performance
• Hex size of 16 mm for standard installation tools

Advanced Iridium TT Technology for Secondary Ignition

The Iridium TT line from Denso focuses on secondary ignition components that combine iridium and platinum materials to improve spark plug longevity and ignition stability. The twin-tip ground electrode design reduces voltage requirements and promotes more complete combustion. This technology is particularly suited for vehicles requiring precise ignition timing and durability under varied driving conditions.

Technical Details and Material Composition

The Denso 4705 spark plug features a copper core center electrode with an iridium tip, providing excellent electrical conductivity and wear resistance. The ground electrode consists of three nickel core electrodes with platinum twin tips arranged in a multi-electrode configuration. This setup enhances spark reliability and reduces misfires. The flat seat design and 14 mm thread diameter ensure compatibility with specified Lexus and Toyota engines, while the 26.5 mm reach fits the combustion chamber depth accurately.

Compatible Lexus and Toyota Models

This spark plug is compatible with a wide range of Lexus and Toyota vehicles, including but not limited to Avalon, Camry, ES350, GS series (GS300, GS350, GS450h, GS460, GS F), Highlander, IS series (IS250, IS300, IS350, IS500, IS F), LC500, LS series (LS460, LS500h, LS600h), RC series (RC300, RC350, RC F), RX series (RX350, RX350L, RX450h, RX450hL), Sienna, and Tacoma.

Common Issues Addressed by Denso Iridium TT Spark Plug 4705

• Engine misfires and rough idling
• Reduced fuel efficiency and power loss
• Difficulty starting the engine
• Inconsistent acceleration response
• Increased emissions due to incomplete combustion

Installation Notes and Tips

Ensure the spark plug gap is set to the manufacturer’s specification of 1.0 mm before installation. Use a 16 mm socket wrench for proper tightening torque to avoid damage to the electrode or threads. Verify the flat seat type and 14 mm thread diameter match the engine’s cylinder head specifications. It is recommended to replace spark plugs in sets to maintain balanced engine performance.

Quality Assurance and Warranty

Denso spark plugs are manufactured to meet OEM standards for fit, form, and function. The Iridium TT 4705 spark plug undergoes rigorous quality control to ensure durability and consistent ignition performance. While specific warranty details are not provided here, Denso products typically come with manufacturer-backed quality assurance to support reliable operation in compatible Lexus and Toyota vehicles.