These 1-3/4 Inch Engine Fluid Plugs are a practical and reliable solution for preventing dangerous and costly spills. Made of hyper flex polyurethane, these plugs are available in red or black and have a 1-3/4 inch diameter. Unlike rubber caps, hyper flex polyurethane is more compatible with today's fuels and will not swell or deteriorate over time. These plugs are designed for plug replacement only, so original metal components must be used during application. With their universal fit, these plugs are suitable for most makes and models. Choose these engine fluid plugs for a secure and long-lasting solution.