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Cylinder Sleeve O-Ring Compatible With Mercury Mariner V6 3.0L Carb Efi Optimax 225Hp 250Hp 275Hp

505-51A2
OEM PART NUMBERS:
• Mercury/Mariner: 25-818573 / 818573
• Aftermarket: 505-51

SPECIFICATIONS:
• Engine: V6 3.0L 2-Stroke (Carb, EFI, DFI, OptiMax)
• HP Range: 225HP, 250HP, 275HP, 300HP
• Bore (O-Ring size): 3.625"
• Quantity Required: 3 per cylinder head / 6 per complete engine
• Serial Range: See application list (early production serials)
• Superseded by 878453 at S/N 0T409000; by 884391 at S/N 0T599000
• Condition: New

APPLICATIONS SUMMARY:
• Mercury/Mariner V6 3.0L 2-Stroke 225-300HP — early serial production

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

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Description

MERCURY V6 3.0L CARB 225HP — S/N 0D280812-0G760299:
• Mercury 225HP V6 3.0L Carb 2-Stroke Mercury (S/N 0D280812-0G760299)

MERCURY V6 3.0L EFI 225HP — S/N 0G760300-0T408999:
• Mercury 225HP V6 3.0L EFI 2-Stroke Mercury (S/N 0G760300-0T408999)

MERCURY V6 3.0L OPTIMAX DFI 225HP — S/N 0G590000-0T178499:
• Mercury 225HP OptiMax DFI V6 3.0L 2-Stroke Mercury (S/N 0G590000-0T178499)

MERCURY V6 3.0L EFI 250HP — S/N 0G129222-0T408999:
• Mercury 250HP V6 3.0L EFI 2-Stroke Mercury (S/N 0G129222-0T408999)
• Mercury 250 XB EFI V6 3.0L 2-Stroke Mercury (S/N 0G980600-0T800999)

MERCURY V6 3.0L EFI/PROMAX 300HP — S/N 0G610221-0T105297:
• Mercury 300HP V6 3.0L EFI / ProMax 2-Stroke Mercury (S/N 0G610221-0T105297)

MARINER V6 3.0L EQUIVALENTS — 225-300HP:
• Mariner 225HP / 250HP / 300HP V6 3.0L 2-Stroke Mariner (equivalent serials)

USAGE: 3 O-rings required per cylinder head / 6 per complete engine

Details

Shipping Information

  • Item Requires Shipping
  • 0.2 lbs.
  • W9.0000” x H0.5000” x L12.0000”
  • Free Shipping!

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