Mercury outboard spare part 8320811 (LOCK RING). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 200 HP 6 CYL (3.0L), 225 HP 6 CYL (3.0L), 250 HP XS 6 CYL (3.0L), 225 (3.0L), 175 HP V6 CYL (2.5L), 250 (3.0L), 125 4 CYL, 225 (3.0L), 225 MARATHON (3.0L), 225 SEAPRO (3.0L), 250 HP Sport XS 6 CYL (2.5L), 300 HP XS 6 CYL (3.2L), JP (3.0L), 110 Jet (2.5L), 175 HP Pro XS 6 CYL (2.5L), 2.5XS (2.5L), 200 HP Pro XS 6 CYL (3.0L), 225 HP SPORT XS 6 CYL (2.5L), 225 HP Sport XS 6 CYL (3.0L), 225 HP XS 6 CYL (2.5L), 3.0L DSI (Diesel Spark Ignition), 150 HP PRO MAX/SUPER MAG, 150/200 HP PRO MAX/SUPER MAG, 225 (3.0L) MARATHON, 225 (3.0L) SEAPRO, 300X (3.0L) PRO MAX. Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 8320811 (LOCK RING), documented in 64 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 1B9742271312View
Mercury 2-STROKE-CARB125-4-cyl0D283222 THRU 0G7602991312View
Mercury 2-STROKE-CARB125-4-cyl9793577 THRU 0P0169991312View
Mercury 2-STROKE-CARB225-3-0l0D280813 THRU 0G7602991012View
Mercury 2-STROKE-CARB225-3-0l0G760300 THRU 0T4089991312View
Mercury 2-STROKE-CARB225-marathon-3-0l0G245605 THRU 0G7602991012View
Mercury 2-STROKE-CARB225-marathon-3-0l0G760300 THRU 0T4089991312View
Mercury 2-STROKE-CARB225-seapro-3-0l0G245605 THRU 0G7602991012View
Mercury 2-STROKE-CARB225-seapro-3-0l0G760300 THRU 0T4089991312View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-pro-xs-6-cyl-2-5l1B516339 THRU 2B5356241312View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l0T178500 THRU 0T8009991312View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l0T801000 THRU 1B2269991312View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l1B227000 THRU 1B4177011312View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l1B417702 THRU 1B5084571312View
Mercury 2-STROKE-DFI-OPTIMAX2-5xs-2-5l0T997974 THRU 1E0007961112View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0G386496 THRU 0G589999912View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0G590000 THRU 0G7602991112View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0G760300 THRU 0G9604991112View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0G960500 THRU 0T1784991112View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0T178500 THRU 0T598999912View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0T801000 THRU 1B4177011112View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l1B417702 THRU 1B5049881112View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l1B912786 THRU 2B5355711112View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-pro-xs-6-cyl-3-0l1B912786 THRU 2B5355711112View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0G590000 THRU 0G7602991112View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0G760300 THRU 0G9604991112View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0G960500 THRU 0T1784991112View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0T178500 THRU 0T598999912View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0T801000 THRU 1B4177011112View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l1B417702 THRU 1B5049881112View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-sport-xs-6-cyl-2-5l1E002584 THRU 1E0508251112View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-sport-xs-6-cyl-3-0l1E000797 THRU 1E0025831112View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-xs-6-cyl-2-5l1E002584 THRU 1B7921951112View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-sport-xs-6-cyl-2-5l1E002342 THRU 1E0518231112View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-sport-xs-6-cyl-2-5l1E051824 THRU 1E0529941112View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T651945 THRU 0T8180421112View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T818043 THRU 0T9979731112View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T997974 THRU 1E0007961112View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E000797 THRU 1E0023411112View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E002342 THRU 1E0511131112View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E053158 THRU 1E0539581112View
Mercury 2-STROKE-DFI-OPTIMAX3-0l-dsi-diesel-spark-ignition1E052967 THRU 1E0541911112View
Mercury 2-STROKE-DFI-OPTIMAX300-hp-xs-6-cyl-3-2l1E001867 THRU 1E0520571112View
Mercury 2-STROKE-DFI-OPTIMAX300-hp-xs-6-cyl-3-2l1E052058 THRU 1E0539871112View
Mercury 2-STROKE-DFI-OPTIMAXjp-3-0l1E003046 THRU 1E0528241112View
Mercury 2-STROKE-EFI150-200-hp-pro-max-super-mag0G610050 THRU 0G8569991112View
Mercury 2-STROKE-EFI150-hp-pro-max-super-mag0D935000 THRU 0G6100491112View
Mercury 2-STROKE-EFI225-3-0l0G129222 THRU 0G7602991012View
Mercury 2-STROKE-EFI225-3-0l0G760300 THRU 0T4089991212View
Mercury 2-STROKE-EFI225-3-0l0T409000 THRU 0T8009991012View
Mercury 2-STROKE-EFI225-3-0l0T801000 THRU 1B4177011212View
Mercury 2-STROKE-EFI225-3-0l1B417702 THRU 1B5049881212View
Mercury 2-STROKE-EFI225-3-0l1B504989 THRU 2B5280961212View
Mercury 2-STROKE-EFI225-3-0l-marathon0T801000 THRU 1B4177011212View
Mercury 2-STROKE-EFI225-3-0l-seapro0T801000 THRU 1B4177011212View
Mercury 2-STROKE-EFI250-3-0l0G129222 THRU 0G7602991012View
Mercury 2-STROKE-EFI250-3-0l0G760300 THRU 0T4089991012View
Mercury 2-STROKE-EFI250-3-0l0T409000 THRU 0T8009991012View
Mercury 2-STROKE-EFI300-3-0l-promax0G610221 THRU 0T1052971012View
Mercury 2-STROKE-EFI300-3-0l-supermagnum0G610221 THRU 0T1052971012View
Mercury 2-STROKE-EFIv-150-hp-2-5l0T801000 THRU 1B2269991112View
Mercury 2-STROKE-EFIv-150-hp-2-5l1B227000 THRU 2B1210481112View
Mercury 2-STROKE-EFIv-150-hp-mag0D082000 THRU 0G3030451112View
Mercury 2-STROKE-EFIv-150-hp-xri0D082000 THRU 0G3030451112View

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Appears in diagrams of these models

  • 200 HP 6 CYL (3.0L)
  • 225 HP 6 CYL (3.0L)
  • 250 HP XS 6 CYL (3.0L)
  • 225 (3.0L)
  • 175 HP V6 CYL (2.5L)
  • 250 (3.0L)
  • 125 4 CYL
  • 225 (3.0L)
  • 225 MARATHON (3.0L)
  • 225 SEAPRO (3.0L)
  • 250 HP Sport XS 6 CYL (2.5L)
  • 300 HP XS 6 CYL (3.2L)
  • JP (3.0L)
  • 110 Jet (2.5L)
  • 175 HP Pro XS 6 CYL (2.5L)
  • 2.5XS (2.5L)
  • 200 HP Pro XS 6 CYL (3.0L)
  • 225 HP SPORT XS 6 CYL (2.5L)
  • 225 HP Sport XS 6 CYL (3.0L)
  • 225 HP XS 6 CYL (2.5L)
  • 3.0L DSI (Diesel Spark Ignition)
  • 150 HP PRO MAX/SUPER MAG
  • 150/200 HP PRO MAX/SUPER MAG
  • 225 (3.0L) MARATHON
  • 225 (3.0L) SEAPRO
  • 300X (3.0L) PRO MAX