Category Mercury MerCruiserMerCruiser - Exhaust System Back O-Ring Seal Kit 25-87400A2 Mercury MerCruiser Sterndrive Parts & Accessories Viewer:1537 Item No: 25-87400A2 Similar fits No: Sierra - 18-2649 GLM - 87400 Fits: R, MR, Alpha One, Gen II & Bravo You May Also Be Interested In Install Kit 16755T1 / 16755Q01 Gasket 27-817277 Complete Gasket Kit PWPO-01050-FU Driveshaft Housing 1547-815930A20 Watch Our Product Videos