This sealing ring is a wear part for the turbocharger oil return line and is used on various Volvo models. The part is made of FPM (fluoro rubber), a material designed for high temperatures and oil resistance. The sealing ring is delivered individually and has the original manufacturer number 31251439. Technical specifications: Material: FPM (fluorine rubber) Inner diameter: 14.95mm Thickness/Thickness: 4.00mm Manufacturer number: 31251439 OE/OEM reference numbers: 8670312, 30637866, 1565165, 1397775, 8G9N-ERR3417-AA, 6G9NERR3417AA, 6G9N-ERR3417-AA, 1388489 Comparison numbers: 31251439, 8670312, 30637866, 21437866, 1397775, 8G9NERR3417AA Scope of delivery: 1 sealing ring 1984 cc, 132 KW, 179 HP 2319 cc, 177 KW, 241 HP 2460 cc, 103 KW, 140 HP Please contact us if you are unsure about compat.