Doing your own oil change? Don't forget the crush washer! This pack of 10 brand new aluminum oil drain plug washers is a must-have for many Toyota and Lexus owners. The part number is 90430-12031 (also cross-references with many other numbers like 90430-12036, 90080-43037, etc.). They have a 12mm inner hole and are designed to create a tight, leak-proof seal between your oil pan and the drain plug. It's crucial to replace this inexpensive washer each time you change your oil to prevent slow leaks. Fits a huge range of models including Toyota 4Runner, Avalon, Camry, Corolla, Highlander, Land Cruiser, Prius, and Lexus ES, GS, IS, GX, and many more from the 1980s up to 2018 (always double-check your specific model and year against the detailed fitment list!). Made from quality aluminum for a proper seal. Save time and money by having these on hand for your next DIY service.