Universal Spark Plug Wire Set - 8.5mm Red High Performance - Compatible with Chevy GM SBC BBC Engines Small Block 305 307 327 350 Big Block 427 454 502 and More with HEI Distributor

Features & Benefits- 8.5mm spiral wound design, high di-electric strength insulator and tightly woven fiberglass braids wrapped heavy duty silicone jackets and high-temperature black boots for outstanding resistance to heat, oil, and abrasion while promoting durability and protection. Premium Quality & Performance - These sturdy spark plug wires are durable and guaranteed to withstand wear and tear. The high temperature silicone boots provide excellent heat and oil resistance, while the stainless steel and brass terminals provide excellent conductivity to maximize performance. Universal For HEI SBC & BBC Chevy Engines - This 8.5mm high performance racing spark plug fits HEI (High Electronic Ignition) systems with Small Block and Big Block engines including SBC 302, 305, 307, 327, 350, 400, BBC 348, 366, 396, 402, 409, 427, 454, 496, 502, 572, 632 engines with V8 4.9L, 5.0L, 5.4L, 5.7L, 6.6L, 6.5L, 6.7L, 7.0L, 7.4L, 8.1L, 8.2L, 9.4L and 10.4L displacements Replace Part Number - SP10-390-1010, This electronic ignition HEI plug wire has black 90 degree boot socket on both ends, get more spark to your plugs with a set of High Performance Ignition Wires. 12-Month Warranty - This SBC BBC HEI spark plug wire set comes with 12-month warranty, if it ever fails on your small block or big block engine, simply contact us for free replacement or refund.