Mercury outboard spare part 8557611 (CHECK VALVE). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 135 HP V6 CYL (2.5L), 150 HP V6 CYL (2.5L), 110 Jet (2.5L), 115 HP V6 CYL (2.5L), 150 HP Pro XS 6 CYL (2.5L). Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 8557611 (CHECK VALVE), documented in 49 exploded diagram location(s), across the 2-STROKE-CARB, 2-STROKE-DFI-OPTIMAX, 2-STROKE-EFI series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 2-STROKE-CARB110-jet-2-5l1B690542 THRU 1B974227141View
Mercury 2-STROKE-DFI-OPTIMAX115-hp-v6-cyl-2-5l0G960500 THRU 0T178499111View
Mercury 2-STROKE-DFI-OPTIMAX135-hp-v6-cyl-2-5l0G590000 THRU 0G760299311View
Mercury 2-STROKE-DFI-OPTIMAX135-hp-v6-cyl-2-5l0G760300 THRU 0G960499311View
Mercury 2-STROKE-DFI-OPTIMAX135-hp-v6-cyl-2-5l0G960500 THRU 0T178499311View
Mercury 2-STROKE-DFI-OPTIMAX135-hp-v6-cyl-2-5l0T178500 THRU 0T800999311View
Mercury 2-STROKE-DFI-OPTIMAX135-hp-v6-cyl-2-5l0T801000 THRU 1B226999311View
Mercury 2-STROKE-DFI-OPTIMAX135-hp-v6-cyl-2-5l1B227000 THRU 1B417701311View
Mercury 2-STROKE-DFI-OPTIMAX135-hp-v6-cyl-2-5l1B417702 THRU 1B737495311View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-pro-xs-6-cyl-2-5l1B690542 THRU 2B535572111View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-v6-cyl-2-5l0G590000 THRU 0G760299311View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-v6-cyl-2-5l0G760300 THRU 0G960499311View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-v6-cyl-2-5l0G960500 THRU 0T178499311View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-v6-cyl-2-5l0T178500 THRU 0T800999311View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-v6-cyl-2-5l0T801000 THRU 1B226999311View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-v6-cyl-2-5l1B227000 THRU 1B417701311View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-v6-cyl-2-5l1B417702 THRU 1B580029311View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-pro-xs-6-cyl-2-5l1B516339 THRU 2B535624141View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l0T178500 THRU 0T800999111View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l0T801000 THRU 1B226999141View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l1B227000 THRU 1B417701141View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l1B417702 THRU 1B508457141View
Mercury 2-STROKE-DFI-OPTIMAX2-5xs-2-5l0T997974 THRU 1E000796141View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0G960500 THRU 0T17849921View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0T178500 THRU 0T59899921View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-xs-6-cyl-2-5l0T235000 THRU 0T81818011, 311View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-xs-6-cyl-2-5l0T818181 THRU 1E000796311View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-xs-6-cyl-2-5l1E000797 THRU 1E002110311View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-xs-6-cyl-2-5l-ros1E050852 THRU 1E053876141View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-xs-sst-6-cyl-2-5l1E050629 THRU 1E053875141View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0G960500 THRU 0T17849921View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0T178500 THRU 0T59899921View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-sport-xs-6-cyl-2-5l1E002584 THRU 1E05082521View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-xs-6-cyl-2-5l1E002584 THRU 1B79219521View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-sport-xs-6-cyl-2-5l1E002342 THRU 1E05182321View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-sport-xs-6-cyl-2-5l1E051824 THRU 1E05299421View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T651945 THRU 0T81804221View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E002342 THRU 1E05111321View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E053158 THRU 1E05395821View
Mercury 2-STROKE-DFI-OPTIMAX3-0l-dsi-diesel-spark-ignition1E052967 THRU 1E05419121View
Mercury 2-STROKE-DFI-OPTIMAX300-hp-xs-6-cyl-3-2l1E001867 THRU 1E05205721View
Mercury 2-STROKE-DFI-OPTIMAX300-hp-xs-6-cyl-3-2l1E052058 THRU 1E05398721View
Mercury 2-STROKE-DFI-OPTIMAXjp-3-0l1E003046 THRU 1E05282421View
Mercury 2-STROKE-EFI225-efi-pro-max-super-mag0G610104 THRU 0G856999311View
Mercury 2-STROKE-EFI225-efi-pro-max-super-mag0G857000 THRU 0T429939311View
Mercury 2-STROKE-EFI225-efi-pro-max-super-magARCHIVE CAT 80918495311View
Mercury 2-STROKE-EFIv-150-hp-2-5l0T409000 THRU 0T80099921View
Mercury 2-STROKE-EFIv-150-hp-2-5l0T801000 THRU 1B22699921View
Mercury 2-STROKE-EFIv-150-hp-2-5l1B227000 THRU 2B12104821View

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Appears in diagrams of these models

  • 135 HP V6 CYL (2.5L)
  • 150 HP V6 CYL (2.5L)
  • 110 Jet (2.5L)
  • 115 HP V6 CYL (2.5L)
  • 150 HP Pro XS 6 CYL (2.5L)