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Part #: 6544

NGK 6544 Spark Plug

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NGK Laser Iridium Spark Plug 6544 Overview

The NGK Laser Iridium Spark Plug 6544 is engineered for reliable ignition performance and durability. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion in a variety of vehicle applications.

  • Iridium center electrode tip for enhanced durability and consistent spark
  • Taper cut ground electrode tip design for improved ignitability
  • Copper core center electrode for optimal conductivity
  • Standard ground configuration with a single nickel ground electrode
  • Non-removable nut electrical terminal type for secure connection
  • Flat seat type with a 5/8 inch hex size for easy installation
  • Pre-gap size of 0.036 inches and reach of 0.75 inches
  • Manufacturer heat range rating of 9 for specific thermal performance

Detailed Product Features and Specifications

The NGK Laser Iridium Spark Plug 6544 features a copper core center electrode with an iridium tip, which provides a balance of excellent electrical conductivity and wear resistance. The taper cut ground electrode tip design enhances spark efficiency by reducing quenching effects, contributing to better ignition and combustion. The single nickel ground electrode is designed with a standard configuration to maintain consistent performance. This spark plug has a non-removable nut electrical terminal type, ensuring a secure and stable connection within the ignition system.

With a flat seat type and a 5/8 inch hex size, the NGK 6544 spark plug is compatible with many vehicle engines requiring these specifications. The pre-gap size of 0.036 inches and a reach of 0.75 inches are optimized for proper spark gap and combustion chamber fitment. The manufacturer heat range of 9 indicates its suitability for engines operating at higher temperatures, helping to prevent fouling and pre-ignition.

About the NGK Laser Iridium Spark Plug Line

The Laser Iridium Spark Plug line from NGK is designed to provide precise ignition performance and long service life. Iridium, being a hard and heat-resistant metal, allows for a fine center electrode tip that improves ignitability and fuel efficiency. This product line focuses on delivering consistent spark and durability, making it suitable for a range of automotive applications requiring reliable secondary ignition components.

Common Applications and Problem Solving

  • Replacement for worn or fouled spark plugs in compatible vehicles
  • Improves ignition reliability in engines experiencing misfires
  • Helps reduce carbon buildup and deposits on the electrode
  • Supports stable combustion in engines with higher operating temperatures
  • Addresses issues related to poor fuel efficiency and rough idling

Installation Notes and Tips

Ensure the spark plug gap is set to the specified pre-gap size of 0.036 inches before installation. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque specification to avoid damage to the threads or improper sealing. The 5/8 inch hex size allows for standard spark plug socket compatibility. Verify compatibility with your vehicle’s make and model to ensure proper fitment and performance.

Quality Assurance and Warranty

NGK spark plugs, including the Laser Iridium Spark Plug 6544, are manufactured to meet strict quality standards for durability and performance. While specific warranty details are not provided here, NGK products typically come with manufacturer-backed quality assurance to support reliable operation in automotive ignition systems.

BrandNGK
Part Number6544
Resistance5000
Ground Electrode Tip DesignTaper cut
Ground ConfigurationStandard
Ground Electrode Core MaterialNickel
Electrical Terminal TypeNon-removable nut
Center Electrode Core MaterialCopper
Center Electrode Tip MaterialIridium
Pre-Gap Size.036
Ground Electrode Quantity1
Hex Size5/8
Insulator Height50.00
Manufacturer Heat Range9
Seat TypeFlat
Reach.75
Thread Diameter10.00
Part NumberImr9d-9h
Stock Number6544

This part fits 0 vehicles. Search below:

YearMakeModelPositionNotes

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

31911-HW1-6716544

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.