Voltage cap spark plug cap for marine applications.Compatible with various boat models including Speedster 150, Speedster 200, Speedster WAKE, Challenger 180, Challenger 230, Utopia 205, SP, and Wake series equipped with 4-TEC engines.Fits models from 2005 to 2012, including configurations with 155 NA, 215 IC, 215 SCIC, 255 HO, 260, 310, 430, 510, and 520 engine options.Dimensions: 15 x 9 x 5.5 cm.Weight: 200 g.Material: Rubber.Features: - Provides stable ignition function - Supports consistent engine function - Waterproof and dustproof sealing - Resistant to temperature extremes and aging - Secure connection design - Plug-and-play installation.