NGK 51235 Spark Plug Wire Set

Ignition Wire Set Overview

NGK Spark Plug Wire Set 51235 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 cleaner ignition performance.

Key Features

• Specific-fit spark plug wire set for confirmed vehicle applications
• Silicone insulation for heat resistance and flexibility
• Noise suppression design helps reduce electrical interference
• SMag core material for consistent ignition signal transfer
• Blue insulation for easy visual identification during service

Detailed Description

NGK 51235 is a spark plug wire set engineered for a range of Buick, Chevrolet, Oldsmobile, and Pontiac models from 1987 through 1992. Compatible With 1987-1992 Buick Century, 1990-1992 Chevrolet Lumina, 1987-1992 Oldsmobile Cutlass Ciera, 1987-1992 Oldsmobile Cutlass Cruiser, 1987-1991 Buick Skylark, 1988-1991 Oldsmobile Cutlass Calais, 1987-1991 Pontiac 6000, 1987-1991 Pontiac Grand Am, 1987-1990 Chevrolet Celebrity, 1987-1988 Pontiac Fiero, 1987 Buick Somerset, and 1987 Oldsmobile Calais. The wire set is part of NGK’s Spark Plug Wire Set line, which focuses on OE-level ignition replacement parts backed by the brand’s long automotive history. This part cross-references Bosch (e.g., 7431, 7432) for the same application.

Common Issues This Part Can 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
• Service replacement for aging original wire sets

Installation Notes and Tips

Verify the engine layout and wire routing before removal so each lead is returned to the correct cylinder. Inspect boots, terminals, and adjacent ignition components during installation, and replace any damaged parts found during service. Confirm fitment by matching the vehicle year, make, and model to the listed applications for NGK 51235.

Quality Assurance

NGK positions this ignition wire set within its OE-focused product range and manufactures premium ignition components to meet OE standards. Part number 51235 is also referenced as RC-GMX020.