Category Mercury MerCruiserMerCruiser - Exhaust System Back O-Ring Seal Kit 25-87400A2 Mercury MerCruiser Sterndrive Parts & Accessories Viewer:1324 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 O-Ring Seal Kit 25-87400A2 Install Kit 16755T1 / 16755Q01 Switch Assy., Starter Magnetic 35850-HF1-670 Dowel 300611