NGK 5987 Spark Plug

NGK Laser Platinum Spark Plug Overview

The NGK Laser Platinum Spark Plug 5987 is engineered for reliable ignition performance in select BMW models. Designed with precision materials and specifications, this spark plug supports efficient combustion and consistent engine operation.

• Part Number: 5987 (Plzfr6a-11s)
• Center Electrode Tip Material: Platinum for enhanced 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: 0.044 inches for precise spark delivery
• Hex Size: 5/8 inch for standard installation tools
• Thread Diameter: 14.00 mm with 26.5 mm reach
• Seat Type: Flat for secure sealing
• Electrical Terminal Type: Non-removable nut
• Manufacturer Heat Range: 6 suitable for moderate engine temperatures

About the NGK Laser Platinum Spark Plug Line

The Laser Platinum Spark Plug line from NGK features advanced platinum-tipped electrodes that provide longer service life and stable ignition performance. This technology reduces electrode wear compared to conventional spark plugs, making it suitable for BMW vehicles requiring precise ignition timing and durability. The 5987 part number is a specific fitment within this line, optimized for secondary ignition systems in various BMW models.

Detailed Product Description

This NGK spark plug combines a copper core center electrode with a platinum tip, enhancing thermal conductivity and wear resistance. The single ground electrode made of nickel with a standard tip design ensures consistent spark gap maintenance. The 5000 ohm resistance helps suppress radio frequency interference, protecting vehicle electronics. With a pre-gap size of 0.044 inches and a flat seat type, the plug ensures proper combustion chamber sealing and spark efficiency. The non-removable nut terminal type simplifies installation and maintains electrical connection integrity.

Compatible BMW Models and Applications

• BMW 128i
• BMW 323i
• BMW 328i, 328i xDrive, 328xi
• BMW 528i, 528i xDrive, 528xi
• BMW X3 and X5 SUVs
• BMW Z4 Roadster

This spark plug is designed specifically for these BMW models, ensuring proper fitment and performance in their ignition systems.

Common Issues Addressed by NGK Laser Platinum Spark Plug 5987

• Engine misfires due to worn or degraded spark plugs
• Reduced fuel efficiency from inconsistent ignition
• Difficulty starting the engine in cold conditions
• Increased emissions caused by incomplete combustion
• Ignition system interference affecting electronic components

Installation Notes and Tips

When installing the NGK Laser Platinum Spark Plug 5987, ensure the spark plug gap is set to the specified 0.044 inches if adjustment is necessary. Use a torque wrench to tighten the spark plug to manufacturer specifications to avoid damage to the flat seat or threads. The 5/8 inch hex size allows for standard spark plug sockets. Inspect the ignition coil boots and wiring for wear during replacement to maintain optimal ignition performance.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Laser Platinum Spark Plug 5987 undergoes rigorous testing for heat range, resistance, and electrode integrity. While specific warranty details may vary, NGK products typically come with a limited warranty against manufacturing defects. Consult the product documentation or vehicle manufacturer guidelines for warranty coverage.