This Briggs & Stratton 690704 Sealing Washer (B4) is a genuine product that is perfect for your lawn mower. It is made in Japan and comes in a pack of one. The washer is designed to provide a reliable seal for your lawn mower's engine. As a lawn mower enthusiast, you know the importance of a well-maintained engine. This sealing washer is a crucial component that ensures your lawn mower's engine runs smoothly. It is compatible with various Briggs & Stratton models, so be sure to check your lawn mower's manual to see if it is compatible with this product.