NGK 51021 Spark Plug Wire Set 7mm Resistor Silicone Boots RC-GMX084

The NGK 51021 spark plug wire set (also called ignition wire set or plug wires, NGK stock number RC-GMX084) is a replacement set made to carry high-voltage current from the ignition coil to the spark plugs. NGK is known as The Ignition Specialist and builds its wires to meet OE standards for durability and performance.

Key Features:

• 7mm resistor-type wire with RFI suppression to help reduce radio and electronic interference
• Blue outer jacket in high-temperature silicone, rated to resist underhood temperatures up to 250°C
• Fiberglass-reinforced braiding over EPDM/silicone insulation for dielectric strength and cable tensile strength
• Black silicone boots at the distributor and spark plug ends, with a silicone seal at the plug boot
• Stainless steel terminals for a secure connection
• Supplied assembled, with stock-style boot ends
• Wires are numbered to match cylinder positions to simplify installation
• Coil wire not included

Cross-references: NGK RC-GMX084; Bosch 09362, 09453; Delphi XS10239, XS10390, XS10397; DENSO 671-6046; Standard Motor Products 7695; BWD CH76150; Federal Parts 3155; Niehoff 1276150; Autolite 86881, 97005.

Fresh wires help restore smooth ignition performance and reliable starting, and they are a good addition to a spark plug replacement or tune-up.