NGK 51276 Spark Plug Wire Set

NGK Spark Plug Wire Set for OE-Style Ignition Service

The NGK Spark Plug Wire Set, part number 51276, is a specific-fit ignition wire set built for select Cadillac applications. It uses blue silicone insulation, noise suppression, and an SMag core to support stable spark delivery and reduced electrical interference in the ignition system.

Key Features

• Specific-fit spark plug wire set for confirmed Cadillac applications
• Blue silicone insulation for heat resistance and durability
• Noise suppression type helps reduce ignition interference
• SMag core material for consistent electrical performance
• 8.00 mm insulation outside diameter
• NGK part number 51276 / RC-GMZ017

Product Details

NGK Spark Plug Wire Set 51276 is part of NGK’s ignition product line, which includes spark plugs, glow plugs, ignition coils, coil-on-plug boots, and wire sets. NGK applies its OE-focused manufacturing experience to replacement ignition components built for dependable operation and fitment accuracy. This wire set is listed for 1985 Cadillac Commercial Chassis, DeVille, and Fleetwood with steel valve cover, as well as 1987-1988 Cadillac Allante, Commercial Chassis, DeVille, Eldorado, Fleetwood, and Seville. If you are searching for a 1987-1988 Cadillac DeVille spark plug wire set or a 1985 Cadillac Fleetwood ignition wire replacement, part number 51276 is the correct reference to verify.

This part cross-references Gates 6890 and TYC 700316 for the same application.

Common Issues This Part May Address

• Misfires caused by worn or damaged ignition wires
• Hard starting related to weak spark transfer
• Ignition noise that can interfere with electrical performance
• Cracked or heat-aged wire insulation
• Rough idle from inconsistent spark delivery

Installation Notes and Tips

Confirm vehicle year, make, model, and engine configuration before installation. This is a specific-fit NGK spark plug wire set, so routing should follow the original wire path and terminal locations. Inspect spark plugs, distributor cap, and ignition coil condition during service to help avoid repeat ignition faults. For 1985 Cadillac Commercial Chassis, DeVille, and Fleetwood, verify the steel valve cover application noted in the fitment data.

Quality Assurance

NGK is an established ignition specialist with extensive OE experience and a long history of manufacturing ignition components to meet durability and operational performance expectations. Part number 51276 is built as a replacement ignition wire set for confirmed Cadillac fitments.