NGK 4983 Spark Plug

Reliable Ignition with NGK Standard Spark Plug 4983

The NGK Standard Spark Plug 4983 is engineered to deliver consistent ignition performance for Fiat 500 vehicles. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Resistance: 5000 ohms for stable electrical performance
• Special side ground electrode tip design for optimized spark
• Nickel ground electrode core and tip for durability
• Copper center electrode core with nickel tip for effective conductivity
• Pre-gap size of 0.040 inches for proper spark gap
• Flat seat type and 0.75-inch reach for secure fitment
• Non-removable nut electrical terminal type
• Hex size of 5/8 inch for standard installation tools
• Manufacturer heat range of 7 suitable for Fiat 500 engine requirements

About the NGK Standard Spark Plug Line

The Standard Spark Plug line by NGK is designed to meet original equipment specifications, providing reliable ignition performance for everyday driving conditions. This line focuses on delivering consistent spark and durability using quality materials such as nickel and copper electrodes. The 4983 part number is part of this line, ensuring compatibility and dependable operation for the Fiat 500.

Technical Details and Compatibility

The NGK 4983 spark plug features a single ground electrode with a special side ground tip design, enhancing spark efficiency and combustion stability. The nickel ground electrode core and tip provide resistance to wear and corrosion, while the copper center electrode core improves thermal conductivity. With a pre-gap size of 0.040 inches and a flat seat type, this spark plug fits securely in the Fiat 500’s cylinder head. The non-removable nut terminal and 5/8 inch hex size allow for straightforward installation using common tools.

Common Applications and Problem Solving

• Restores proper ignition timing and spark delivery in Fiat 500 engines
• Helps resolve misfires and rough idling caused by worn spark plugs
• Improves fuel efficiency by ensuring complete combustion
• Reduces engine hesitation during acceleration
• Prevents fouling and corrosion with durable electrode materials

Installation Notes and Tips

When installing the NGK Standard Spark Plug 4983, ensure the spark plug gap is set to the specified 0.040 inches if adjustment is needed. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the threads or seat. The 5/8 inch hex size is compatible with standard spark plug sockets. Always inspect the spark plug threads and cylinder head for cleanliness before installation to ensure proper sealing.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Standard Spark Plug line, including part number 4983, undergoes rigorous testing for resistance, heat range, and electrode integrity. While specific warranty details may vary, NGK products typically come with manufacturer-backed quality assurance to support long-term use in compatible Fiat 500 models.