Essential to avoid spark plug discharge to other metal objects in the engine area. Using the Sierra 18-5752 Universal Spark Plug Boot on an outboard engine is an excellent choice. These high-quality rubber boots have terminal connections. Sierra Marine offers a variety of types and numbers of spark plug boots to match your needs. Exact-fit design enables easy installation and trouble-free service. Enjoy your time on the water more with this top-notch marine product. Key Features: Meets or exceeds OEM Designed for longevity Excellent heat resistance qualities Maximum safety against spark loss Crafted with precision using superior materials Designed to meet stringent quality criteria For Yamaha Outboard Engines Substitutes for Chris Craft 580339 Specifications: Brand: SeaStar Solutions SKU: 18-5752 UPC: 808282244484 Weight: 0.07 LBS Manufacturer Part Number (MPN): 118-5752 Inner Diameter: 8 mm Spark Plug Wire Component Type: Plug boot Spark Plug Boot Ends: One 90 degree Material: Rubber Color: Black Terminals Included: Yes Terminal Style: Female Coil Wire Included: No Size: 8 mm Fits: Outboard Universal ApplicationsThis product replaces:47-5752 808282244484 9-28123