NGK 4115 Spark Plug

Laser Platinum Spark Plug Overview

The NGK 4115 Laser Platinum spark plug is built for precise ignition performance and OE-style service life. It is a direct fit for select Acura Integra applications and uses a platinum center electrode with a nickel ground electrode for stable spark delivery.

Fits 1992-2001 Acura Integra, N/A. The NGK 4115 is specified with a 0.052-inch pre-gap, 14 mm thread diameter, 0.75-inch reach, and flat seat design.

Key Features

• Platinum center electrode for consistent ignition performance.
• Copper core construction for efficient heat transfer.
• Standard ground electrode design with a single ground electrode.
• 5,000 ohm resistance for ignition system compatibility.
• Non-removable nut terminal and 5/8-inch hex size.

Detailed Description

NGK 4115, also identified as PFR6G-13, is a Laser Platinum spark plug engineered to meet original equipment standards. It is listed for Acura Integra models from 1992-2001 and supports the ignition requirements of engines that call for a flat-seat plug with a 0.052-inch gap. The platinum tip helps maintain spark consistency, while the copper core and nickel ground electrode support controlled heat management and dependable operation.

This part cross-references DENSO Auto Parts 4504 for the same application.

What It Is Used For

• Replacing worn spark plugs that cause rough idle.
• Restoring hard-start or extended-crank conditions.
• Addressing misfire symptoms tied to plug wear.
• Maintaining stable combustion and ignition response.

Installation Notes and Tips

Verify the specified gap before installation and confirm the plug seat type, thread diameter, and reach match the engine requirements. Use the listed NGK 4115 / PFR6G-13 specification when cross-checking service data for Acura Integra applications.

Quality Assurance

NGK is a major OE spark plug supplier in North America and manufactures to original equipment standards. The 4115 / PFR6G-13 reflects that OE-focused engineering approach for consistent durability and operational performance.