NGK 4471 Spark Plug

NGK Laser Platinum Spark Plug Overview

The NGK Laser Platinum Spark Plug 4471 is engineered for reliable ignition performance in BMW M3, M5, and M6 models. Designed with precision materials and specifications, this spark plug supports efficient combustion and consistent engine operation.

• Part Number: 4471 (Lkr8ap)
• Compatible with BMW M3, M5, and M6
• Center Electrode Tip Material: Platinum for durability
• Center Electrode Core Material: Copper for optimal conductivity
• Ground Electrode Core Material: Nickel with standard tip design
• Resistance: 5000 ohms to reduce electrical noise
• Pre-Gap Size: 0.036 inches for precise spark gap
• Ground Electrode Quantity: 2 for stable ignition
• Hex Size: 5/8 inch for installation
• Thread Diameter: 12.00 mm with 26.5 mm reach
• Seat Type: Flat for secure fitment
• Electrical Terminal Type: Non-removable nut
• Manufacturer Heat Range: 8
• Insulator Height: 50.00 mm

About the NGK Laser Platinum Spark Plug Line

The Laser Platinum Spark Plug line from NGK features advanced platinum-tipped electrodes that provide enhanced wear resistance and stable ignition performance. This technology extends spark plug life and maintains consistent firing characteristics, making it suitable for high-performance vehicles like the BMW M3, M5, and M6. The 4471 part number within this line is designed to meet OEM specifications and deliver reliable secondary ignition.

Technical Details and Performance

The NGK 4471 spark plug incorporates a copper core center electrode for excellent thermal conductivity, paired with a platinum tip to resist electrode wear. The dual ground electrodes made of nickel ensure a stable spark and improved ignition reliability. With a resistance of 5000 ohms, this spark plug minimizes electromagnetic interference, protecting vehicle electronics. The flat seat and precise thread diameter ensure proper sealing and fitment in compatible BMW engines.

Applications and Problem Solving

• Restores consistent ignition in BMW M3, M5, and M6 engines
• Reduces misfires caused by worn or damaged spark plugs
• Improves fuel efficiency by maintaining optimal combustion
• Minimizes electrical noise interference with 5000 ohm resistance
• Extends spark plug service life with platinum-tipped electrodes

Installation Notes and Tips

• Ensure the spark plug gap is set to 0.036 inches before installation
• Use a 5/8 inch socket for proper torque application
• Verify flat seat compatibility with the engine cylinder head
• Do not attempt to remove the non-removable nut terminal
• Follow manufacturer torque specifications to avoid damage

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict OEM standards, ensuring consistent quality and performance. The Laser Platinum Spark Plug 4471 undergoes rigorous testing for durability and reliability. While specific warranty details may vary, NGK products typically include coverage against manufacturing defects when installed and used according to guidelines.