NGK 51109 Spark Plug Wire Set

NGK Spark Plug Wire Set for GM V8 Applications

NGK Spark Plug Wire Set 51109 is a specific-fit ignition wire set built for select 1994-1995 Buick, Cadillac, and Chevrolet applications. It uses blue silicone insulation, a Ferro Mag core, and noise suppression to support stable spark delivery and cleaner ignition performance.

Key Features

• Specific-fit NGK spark plug wire set for confirmed vehicle applications
• Blue silicone insulation for heat resistance and durability
• Ferro Mag core construction
• Noise suppression type: Yes
• 7.00 mm insulation outside diameter
• NGK part number 51109 / RC-GMX049

Product Details

NGK 51109 is part of the NGK Spark Plug Wire Set line, backed by NGK’s long history in ignition components and OE-focused manufacturing. The brand’s ignition product range includes spark plugs, glow plugs, ignition coils, coil-on-plug boots, and wire sets, with an emphasis on durability and operational performance for domestic and import vehicles. This wire set is a direct replacement choice for owners servicing ignition systems on 1994-1995 Buick Roadmaster, Cadillac Fleetwood, Cadillac Commercial Chassis, Chevrolet Caprice, Chevrolet Impala, and 1994 Chevrolet Commercial Chassis applications. This part cross-references DENSO Auto Parts (e.g., 671-8046) for the same application.

Common Issues This Part Helps Address

• Misfires caused by worn or damaged ignition wires
• Weak spark transfer from aging wire insulation or core wear
• Radio-frequency interference in ignition systems that need suppression
• Heat-related deterioration in high-temperature engine bays
• Rough idle or hesitation linked to degraded wire performance

Installation Notes and Tips

Verify engine application before installation and route each lead to match the original layout. Inspect spark plugs, distributor cap, and ignition coil condition at the same time, since worn related components can affect wire performance. Confirm the wire set is the correct specific-fit application for your vehicle before service.

Quality Assurance

NGK manufactures premium ignition products to meet OE standards, using global manufacturing and distribution resources focused on consistency and durability. Part number 51109 reflects NGK’s OE-oriented approach to ignition replacement parts for domestic and import vehicles.