NGK 51331 RC-GMZ031 Spark Plug Wire Set Mag Core Silicone

The NGK 51331 (RC-GMZ031) spark plug wire set is a premium OE-fit replacement ignition wire set. It carries high-voltage current from the ignition coil or distributor to the spark plugs. Fresh plug wires help correct misfires, rough idle, and ignition noise caused by worn or cracked wires. NGK is a leading ignition specialist with decades of OE experience.

Key Features:

• Ultra-low resistance mag core: Stainless steel winding over a ferrite magnetic core supports a strong spark and suppresses EMI/RFI noise.
• High-temp silicone outer jacket: Resists underhood temperatures above 250 degrees C.
• EPDM/silicone inner insulation: Provides strong dielectric strength to contain high-voltage current.
• 8 mm cable diameter: Blue silicone jacket.
• Stainless steel terminals: Serrated crimps grip the cable jacket and inner insulation for strong terminal retention.
• Watertight spark plug boots: Boots are glued to the cable with silicone sealer. A locking, corrosion-resistant spring clip secures the plug connection.
• OE or better boots: Spark plug and distributor boots are built to OEM tolerances for a precise fit.
• Cylinder lead ID tags: Identification tags, where possible, make installation easier.
• Limited lifetime warranty: See package for details.

Cross-references: NGK model RC-GMZ031. Interchange numbers include 671-4027, 671-4028, 9308, 09308, 86054, 96062, 6416, 6421, 6422, XS10250, XS10280, CH459, 114008, 114009, 128414, and 700257.

This wire set restores reliable ignition performance with OE-quality construction. It is a durable replacement for domestic and import applications.