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Aftermarket Mercruiser 8637251 Wet Joint Riser Block Off Plate Barr 20-87918

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BARR MC-20-87918 Mercruiser Stainless Steel Wet Joint Blanking Block Off Plate Centre Out

Direct replacement block off plate for closed cooling systems with center rise outlet exchaust manifolds

For use with Mercruiser risers MC-20-98504, MC-20-98504 and MC-20-44354

Requires a pair of MC47-27-41813 gaskets

Suitable for Mercruiser V6 229, 262cu and V8 898R, 228R and 260R models

Replaces - 27-8637251