Retainer Nut Wrench Tool Compatible With Mercury Racing 2.5L 3.0L V6 Outboard Mercruiser Bravo Heavy

OEM PART NUMBERS:
• Mercury/Quicksilver: 91-840393
• Mercury: 840393
• Mercury Tool Kit: 840393A1 (91-840393A1)

RELATED TOOL NUMBERS:
• Seal Installation Tool (part of 840393A1 kit): 91-8M0059911
• Retainer Nut Serviced: 79448, 8M2011027
• Standard Prop Shaft Tool (NOT this item): 91-61069T

SPECIFICATIONS:
• Product Type: Bearing Carrier Retainer Nut Tool / Spanner Wrench
• Shaft I.D.: 1.255" (1.25 inch heavy-duty propeller shaft)
• Retainer Nut Diameter: 4-3/8"
• Use: Removes and installs bearing carrier retainer nut
• Use With: Breaker Bar or Torque Wrench

FITS MERCURY RACING:
• 2.5L V6 - EFI Offshore, 260 HP, 280 ROS HP, 300 Drag
• 3.0L V6 - 300X, 300XS
• SportMaster and TorqueMaster Gearcases

FITS MERCURY / MERCRUISER:
• Mercury Verado gearcases (1990s and later)
• MerCruiser Bravo sterndrives with heavy-duty 1.25" prop shaft
• All gearcases with 1.25" propeller shaft and 4-3/8" retaining nut
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
MERCURY RACING OUTBOARDS:

2.5L V6 ENGINES:
• Mercury Racing 2.5L EFI Offshore
• Mercury Racing 2.5L 260 HP
• Mercury Racing 2.5L 280 ROS HP
• Mercury Racing 2.5L 300 Drag
• V6 Two-Stroke and OptiMax configurations

3.0L V6 ENGINES:
• Mercury Racing 3.0L 300X
• Mercury Racing 3.0L 300XS
• V6 Two-Stroke and OptiMax configurations

MERCURY OUTBOARDS:

VERADO AND LATER MODELS:
• Mercury Verado gearcases (1990s and later)
• All Mercury outboard gearcases with 1.25" heavy-duty propeller shaft
• V6 outboards 200-300 HP with heavy-duty lower units

MERCRUISER STERNDRIVES:

BRAVO SERIES:
• MerCruiser Bravo sterndrives with heavy-duty 1.25" propeller shaft
• Bravo XR with 1-1/4" replacement prop shaft

GEARCASE TYPES:

SPORTMASTER:
• All SportMaster gearcases with 1.25" prop shaft
TORQUEMASTER:
• All TorqueMaster gearcases with 1.25" prop shaft

IMPORTANT NOTES:
• This tool is for heavy-duty 1.25" (1.255") propeller shaft gearcases ONLY
• Fits 4-3/8" diameter retainer nut (p/n 79448, 8M2011027)
• NOT for standard 1" propeller shaft gearcases (use 91-61069T instead)
• Use with breaker bar or torque wrench