NGK 51057 Spark Plug Wire Set — 6-Wire, Blue Silicone, Ultra-Low Resistance

The NGK 51057 (RC-GMX066) is a specific-fit spark plug wire set featuring six wires engineered to deliver outstanding ignition performance and long-term durability. NGK's ultra-low resistance magnetic core design combines a premium ferrite core with a stainless steel winding to produce a stronger, more consistent spark while providing excellent EMI/RFI noise suppression. The blue silicone outer jacket pairs with an inner EPDM/silicone insulation layer for high dielectric strength and resistance to the extreme heat found in engine bays. All six spark plug boots are straight (180°) and made of black silicone, while the coil end boots are angled at 90° — each glued to the cable with a silicone sealer to form a watertight seal.

Key Features:

• 7mm insulation outside diameter with blue silicone outer jacket and EPDM/silicone inner insulation
• Premium ferrite magnetic (SMag) core with stainless steel winding for ultra-low resistance and a more powerful spark
• Excellent EMI/RFI noise suppression for cleaner ignition signal
• Six straight (180°) black silicone spark plug end boots, silicone-sealed to the cable for a watertight fit
• 90° black coil end boots for proper OE-style routing and fit
• Stainless steel terminals with up to 3 serrated crimps for maximum terminal retention strength
• Locking C-shaped spring clip with corrosion-resistant plating for a secure spark plug terminal connection
• OE or better specified boots ensure precise fit, performance, and durability
• Grade: Standard Replacement; Specific-Fit design

Built to meet or exceed OE standards, this NGK wire set is a direct, specific-fit replacement that installs with confidence. Fits select 1996 Buick and Oldsmobile models.