NGK 4292 Spark Plug

Reliable Ignition Performance for Select Chrysler, Hyundai, Kia, and Mercedes-Benz Models

The NGK Laser Platinum Spark Plug 4292 is engineered to deliver consistent ignition and efficient combustion for a range of vehicles including the Mercedes-Benz C43 AMG, Hyundai Sonata, and Kia Optima. Designed with durable materials and precise specifications, this spark plug supports optimal engine performance and fuel efficiency.

• Center electrode tip made of platinum for enhanced durability
• Copper core center electrode for improved conductivity
• Standard ground electrode with nickel core material
• Non-removable nut electrical terminal type
• Pre-gap size of 0.044 inches for precise spark delivery
• Flat seat type with 14mm thread diameter and 0.75 inch reach
• Hex size of 5/8 inch for standard installation tools
• Manufacturer heat range rating of 5

About the NGK Laser Platinum Spark Plug Line

The Laser Platinum Spark Plug line from NGK combines platinum-tipped center electrodes with copper cores to provide a balance of longevity and efficient ignition. This design reduces electrode wear and maintains stable spark performance over time, making it suitable for vehicles requiring reliable secondary ignition components. The 4292 part number is part of this line, offering consistent performance for compatible Chrysler, Hyundai, Kia, and Mercedes-Benz models.

Technical Details and Specifications

The NGK 4292 spark plug features a platinum center electrode tip that resists wear and corrosion, paired with a copper core to enhance electrical conductivity. The ground electrode is constructed with a nickel core and a standard tip design, ensuring reliable spark grounding. The spark plug’s resistance is rated at 1000 ohms, which helps reduce radio frequency interference. Its flat seat and 14mm thread diameter fit securely in the combustion chamber, while the 0.75 inch reach and 0.044 inch pre-gap size are optimized for precise ignition timing. The non-removable nut terminal type simplifies installation and connection stability.

Applications and Common Issues Addressed

• Restores proper ignition in Mercedes-Benz C240, C280, and E320 models
• Improves engine start-up and reduces misfires in Hyundai Sonata and Kia Optima
• Helps maintain fuel efficiency and smooth engine operation
• Addresses rough idling and hesitation during acceleration
• Reduces spark plug fouling and electrode wear over time

Installation Notes and Tips

When installing the NGK Laser Platinum Spark Plug 4292, ensure the spark plug gap is set to the manufacturer’s recommended specification of 0.044 inches. Use a 5/8 inch socket for proper torque application and avoid over-tightening to prevent damage to the flat seat. The non-removable nut terminal requires standard ignition wire connectors. It is recommended to inspect the ignition system components during installation to ensure optimal performance.

Quality Assurance and Warranty

NGK spark plugs, including the Laser Platinum Spark Plug 4292, are manufactured to meet strict quality standards for durability and performance. The part is designed to provide consistent ignition reliability across its service life. Warranty coverage details should be confirmed with the vehicle manufacturer or parts distributor.