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Mercruiser Center Rise Block Off Plate OEM Barr Marine MC-20-87918

$22.45 $24.95


Replacement stainless steel block off plate for various Mercruiser closed cooled engines.

  • For Mercruiser center rise exhaust manifolds in fresh water cooling applications
  • Fits Mercruiser 98502A2, 98504A3 and 44354A3 risers
  • Separates engine antifreeze from raw water
  • Replaces Barr MC20-87918
  • Replaces Mercury 27-8637251