A0289975648
Upper Pump O-Ring
Detroit Diesel

This upper pump O-ring, measuring 1.75 inches in both width and length, with an inner diameter of 38 mm, is designed for effective sealing in the fuel or hydraulic pump systems. Its black fluorocarbon elastomer composition ensures excellent chemical resistance and durability under the demanding conditions of heavy-duty engines. The cross-section diameter of 2.65 mm provides a reliable seal that compensates for slight misalignments or surface irregularities. Typically supplied as a kit with two rings, this component ensures consistent sealing across multiple installations or maintenance cycles. Its role is critical in preventing fluid leaks, maintaining pressure integrity, and avoiding contamination ingress, which could impair engine or system performance. Source One Parts Center offers these high-quality seals to support maintenance and repair efforts, helping you keep your fleet running smoothly and efficiently.