NGK 3546 Spark Plug

NGK Laser Platinum Spark Plug Overview

The NGK Laser Platinum Spark Plug 3546 is engineered for reliable ignition performance in select Acura and Land Rover vehicles. Designed to meet the specific needs of models like the Acura NSX and Land Rover Discovery, this spark plug ensures consistent combustion and engine efficiency.

• Part Number: 3546 (PFR6N-11)
• 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
• Thread Diameter: 14.00 mm with 0.75 inch reach
• Hex Size: 5/8 inch for standard installation tools
• Seat Type: Flat for secure fitment
• Electrical Terminal Type: Non-removable nut
• Manufacturer Heat Range: 6, suitable for moderate engine temperatures

Detailed Product Description

The NGK Laser Platinum Spark Plug 3546 features a platinum-tipped center electrode that provides enhanced wear resistance and longer service life compared to conventional spark plugs. The copper core in the center electrode ensures excellent thermal conductivity, promoting efficient heat dissipation. The ground electrode is made from nickel with a standard tip design, balancing durability and performance. With a resistance of 5000 ohms, this spark plug helps minimize electromagnetic interference, protecting sensitive vehicle electronics.

Its flat seat type and 14 mm thread diameter with a 0.75 inch reach make it compatible with specific Acura and Land Rover models, including the Acura NSX and Land Rover Discovery and Freelander. The pre-gap size of 0.044 inches is factory set to optimize ignition timing and combustion efficiency. The non-removable nut terminal type simplifies installation and ensures a secure electrical connection.

About the Laser Platinum Spark Plug Line

The NGK Laser Platinum Spark Plug line is designed to provide consistent ignition performance with extended durability. Incorporating platinum at the center electrode tip, these spark plugs offer improved wear resistance and stable spark delivery over time. This product line is suitable for vehicles requiring precise ignition components that maintain performance under varied driving conditions.

Applications and Common Issues Addressed

• Compatible with Acura NSX, Land Rover Discovery, and Freelander models
• Helps resolve misfires caused by worn or degraded spark plugs
• Reduces engine hesitation and rough idling
• Improves fuel efficiency by ensuring complete combustion
• Minimizes electromagnetic interference affecting vehicle electronics

Installation Notes and Tips

• Verify compatibility with your vehicle’s make and model before installation
• Use a 5/8 inch socket wrench for proper tightening
• Do not adjust the pre-gap size as it is factory set for optimal performance
• Apply anti-seize compound on threads if recommended by the vehicle manufacturer
• Torque to manufacturer specifications to avoid damage to the spark plug or cylinder head

Quality Assurance

NGK spark plugs are manufactured to strict quality standards to ensure reliable performance and durability. The Laser Platinum Spark Plug 3546 undergoes rigorous testing for heat range, resistance, and electrode integrity. While specific warranty details are subject to the vehicle manufacturer or parts distributor, NGK products are recognized for consistent quality in ignition components.