The Moroso Ultra spark plug wire set for BBC under-header routing features 135° plug boots with HEI compatibility, finished in red. Designed for big-block Chevy engines that require angled boots to clear headers or unique layouts, the 135° ends offer an alternative routing geometry to match distributor and plug positions while supporting HEI distributor systems common in many V8 builds.
Moroso BBC Under Header 135 Plug Boots HEI Ultra Spark Plug Wire Set - Red