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Sierra 18-2172 Mercruiser Coupler

Original price $301.99 - Original price $301.99
Original price
$301.99
$301.99 - $301.99
Current price $301.99

Sierra 18-2172 Mercruiser Coupler

  • Engine coupler is used when replacing Mercruiser V6 or V8 2 piece rear main seal engines with 3 ½ inch crankshaft bolt pattern to a newer 1 piece engine with 3 inch bolt pattern
  • Replaces Mercury 14505A2
  • Replaces OMC 775495
  • Replaces Mallory 9-72500

Used when a new replacement V6/V8 GM with a 1-piece rear main seal is used to replace an older V6 or V8 GM with a 2-piece rear main seal *Note* the bell housing on older models will not clear a triangular coupler.