NGK 51388 Spark Plug Wire Set

Ignition Wire Set Overview

NGK Spark Plug Wire Set 51388 is a specific-fit ignition wire set built for classic Buick, Pontiac, and Oldsmobile applications. It uses silicone insulation and noise suppression construction to support stable spark delivery and reduced electrical interference.

With blue insulation, an SMag core, and an 8.00 mm outside diameter, this NGK wire set is built for direct replacement use on a wide range of vintage GM vehicles. The part number 51388 is also referenced as RC-GMZ013.

Key Features

• Specific-fit spark plug wire set for targeted vehicle applications
• Silicone insulation for heat-resistant wire protection
• Noise suppression design to help control ignition interference
• SMag core material for consistent electrical transfer
• Blue insulation for easy visual identification
• 8.00 mm insulation outside diameter

Fitment Details

Compatible with 1973-1981 Buick Century, Electra, Estate Wagon, LeSabre, Regal, and Skylark, N/A.

Compatible with 1973-1981 Pontiac Bonneville, Catalina, Firebird, Grand Am, Grand LeMans, Grand Prix, Grand Safari, Grandville, GTO, Laurentian, LeMans, Parisienne, Ventura, and 1979-1981 Pontiac LeMans and Grand LeMans, N/A.

Compatible with 1979 Oldsmobile Delta 88, N/A.

What It Helps Address

• Misfires caused by worn or degraded ignition wires
• Electrical noise that can interfere with ignition performance
• Cracked or heat-aged wire insulation
• Weak spark transfer from the ignition system
• Restoration needs for classic GM ignition service

Installation Notes

Verify engine-specific routing and terminal style before installation. This wire set is listed as a specific-fit replacement, so match the application details to the vehicle and ignition setup, including HEI-equipped models where noted in the fitment data.

Quality Assurance

NGK brings more OE ignition expertise globally than any other brand and manufactures premium ignition products to meet OE standards. The 51388 wire set reflects that OE-focused approach for domestic and import vehicle service.