25' Red Plug Wire Sleeve

The MOROSO 25' Red Plug Wire Sleeve (MOR72002) is a professional-grade protective sleeve designed to shield spark plug wires and ignition harnesses from extreme underhood heat, abrasion, and contamination. This 25-foot continuous sleeve accommodates wires ranging from 7mm to 8mm in diameter, making it compatible with most domestic and import ignition systems used in street cars, race vehicles, and performance engines.

Constructed from a fiberglass core with silicone outer coating, the sleeve combines thermal resistance with flexibility. The silicone exterior resists oil, fuel, and coolant spray while maintaining pliability in cold-start conditions, preventing the brittleness that can compromise protection. The bright red color aids in quick identification during engine diagnostics and maintenance. At 0.9 lbs for the 25-foot length, the sleeve adds negligible weight while providing barrier protection against cross-firing, EMI interference, and mechanical wear where wires route through tight engine compartment spaces.

Builders and technicians use this sleeve in high-heat applications including turbocharged and supercharged builds, vintage restorations, and performance upgrades where factory wire management proves inadequate. The continuous 25-foot roll allows custom cutting and bundling to match specific harness layouts, eliminating waste and enabling professional-grade installations across multiple vehicles or a single complex build. MOROSO plug wire sleeves are widely recognized in the hot rod and racing community for reliable thermal management without compromising signal integrity.