NGK 5255 Spark Plug

Overview of NGK Laser Platinum Spark Plug 5255 for Mazda RX-7

The NGK Laser Platinum Spark Plug 5255 is engineered for reliable ignition performance in Mazda RX-7 vehicles. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Part Number: 5255 (Bur9eqp)
• Compatible with Mazda RX-7 models
• Center electrode tip made of platinum for durability
• Surface discharge ground electrode design with nickel core
• Electrical terminal type features a non-removable nut
• Pre-gap size of 0.056 inches for optimal spark
• Flat seat type with 14mm thread diameter and 21.5mm reach
• Manufacturer heat range rating of 9
• Hex size of 13/16 inch for installation
• Insulator height of 67.00 mm
• Resistance value of 5000 ohms

NGK Laser Platinum Spark Plug Product Line Details

The Laser Platinum Spark Plug line from NGK incorporates platinum at the center electrode tip, enhancing wear resistance and maintaining stable ignition over time. This product line is designed to provide consistent performance and longevity, making it suitable for vehicles like the Mazda RX-7 that require precise ignition components.

Technical Description and Features

This NGK spark plug features a copper core center electrode with a platinum tip, which improves durability and ignition stability. The ground electrode uses a surface discharge design with a nickel core, optimizing spark exposure and combustion efficiency. The non-removable nut electrical terminal ensures secure connection, while the flat seat type and 14mm thread diameter provide proper fitment in the RX-7 engine. The pre-gap size of 0.056 inches is factory set to support optimal spark generation, and the heat range of 9 matches the thermal requirements of the vehicle’s ignition system.

Applications and Problem Solving

• Compatible with Mazda RX-7 ignition systems requiring precise spark plug specifications
• Helps reduce misfires and rough idling caused by worn or faulty spark plugs
• Supports improved fuel combustion efficiency and engine responsiveness
• Addresses issues related to electrode wear and inconsistent spark delivery
• Suitable for maintaining engine performance in high-heat operating conditions

Installation Notes and Tips

When installing the NGK Laser Platinum Spark Plug 5255, ensure the spark plug gap is checked and adjusted if necessary, although it comes pre-gapped at 0.056 inches. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended specifications to avoid damage to the flat seat and ensure proper sealing. The 13/16 inch hex size allows for standard spark plug socket compatibility. Inspect the ignition coil and wiring for wear during installation to maintain optimal ignition system 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 5255 undergoes rigorous testing for resistance, heat range, and electrode integrity. While specific warranty details are not provided here, NGK products typically come with manufacturer-backed quality assurance to support long-term use in compatible vehicles like the Mazda RX-7.