Keep your AR45 pump operating reliably with the AR550450 AR45 Ring Nut (#86). This genuine replacement bypass ring nut is designed to securely fasten the bypass assembly, helping maintain proper pump performance and ensuring a dependable fit during maintenance or repairs. It's the ideal replacement for worn, damaged, or missing components in compatible AR45 pump systems. This part is identified as #86 on the AR45 parts breakdown and is manufactured to meet original equipment specifications for a precise fit. Features: Genuine AR replacement part Part Number: AR550450 Component: AR45 Bypass Ring Nut Diagram Reference: #86 OEM-quality fit and performance Ideal for repairing or maintaining compatible AR45 pump systems Whether you're performing routine maintenance or replacing a damaged component, the AR550450 AR45 Ring Nut helps keep your pressure washing equipment operating at peak performance.