NGK 51238 Spark Plug Wire Set

Ignition wire set overview

NGK Spark Plug Wire Set 51238 is a specific-fit ignition wire set built for older GM applications. It uses silicone insulation, a blue jacket, and noise suppression construction to support stable spark delivery and reduced electrical interference.

• Specific-fit spark plug wire set for direct application matching
• Silicone insulation for heat resistance and flexibility
• Noise suppression design helps reduce ignition interference
• SMag core material for consistent electrical performance
• Blue insulation for easy visual identification during service

Fitment and application details

Compatible with 1987-1991 Pontiac 6000, 1987-1989 Buick Century, 1987-1989 Oldsmobile Cutlass Ciera, 1987-1989 Oldsmobile Cutlass Cruiser, 1987-1990 Chevrolet Celebrity, 1988-1993 Buick Regal, 1988-1993 Oldsmobile Cutlass Supreme, 1988-1993 Pontiac Grand Prix, and 1990-1994 Chevrolet Lumina. This part cross-references DENSO Auto Parts (e.g., 671-6014) and Delphi (e.g., XS10206) for the same application.

What this part helps address

• Misfires caused by worn or degraded ignition wires
• Electrical noise that can affect ignition system operation
• Cracked or heat-aged wire insulation
• Inconsistent spark transfer under engine load

Installation notes and quality

Match the wire routing and terminal locations to the original layout before installation. Verify the application against the vehicle's ignition system requirements and confirm the part number 51238 before ordering or service. NGK brings more than 80 years of ignition experience and manufactures premium ignition products to meet OE standards. Part number 51238 is also identified by stock number 51238 and part number RC-GMX012.