Rareelectrical Bearing Carrier Nut Tool Compatible with Mercury Verado Mercruiser Bravo Sportmaster Torquemaster 91-840393 840393 1.25 Inch Fat Shaft Gearcase Service Wrench

Bearing Carrier Retainer Nut Tool - Mercury / MerCruiser Heavy-Duty Prop Shaft Precision-engineered service tool for removing and installing bearing carrier retainer nuts on Mercury and MerCruiser gearcases equipped with the larger 1.25-inch (1.255") heavy-duty "fat shaft" propeller shafts. Designed for 4-3/8" diameter retainer nuts (p/n 79448, 8M2011027). Essential for lower unit service on SportMaster and TorqueMaster gearcases. OEM PART NUMBERS: Mercury/Quicksilver: 91-840393 Mercury: 840393 Mercury Tool Kit: 840393A1 (91-840393A1) SPECIFICATIONS: Product Type: Bearing Carrier Retainer Nut Tool Shaft I.D.: 1.255" (1.25 inch heavy-duty prop shaft) Retainer Nut Diameter: 4-3/8" Compatible Retainer Nut P/N: 79448, 8M2011027 Use With: Breaker Bar or Torque Wrench APPLICATIONS: Mercury Racing 2.5L V6 - 2.5 EFI Offshore, 260 HP, 280 ROS HP, 300 Drag Mercury Racing 3.0L V6 - 300X, 300XS Mercury V6 Two-Stroke and OptiMax (200-300 HP) Mercury Verado Gearcases (1990s and later models) MerCruiser Bravo Sterndrives with Heavy-Duty 1.25" Prop Shaft SportMaster and TorqueMaster Gearcases All gearcases with 1.25" propeller shaft and 4-3/8" retaining nut ⚠️ Verify OEM part number from your original unit before ordering. This tool fits heavy-duty 1.25" prop shaft gearcases only.

• Products are all 100% NEW and Made with the Highest Quality Components Available with a Full One Year Warranty. Please verify your OEM part number from your original unit to help ensure fitment.
• Replaces: 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
• Applications: 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
• Applications: 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...
• Bearing Carrier Retainer Nut Tool Source: Aftermarket