Red Rhino Gearcase Rebuild Kit for 1998–2006 Mercury/Mariner/Force 60–90 HP 6-Jaw Lower Units

The Red Rhino ME-BFL3 gearcase rebuild kit is designed for select 1998-2006 Mercury, Mariner, and Force 60-90 HP 6-jaw lower units, including Mercury/Mariner 60 HP BigFoot and 3-cylinder L3 applications. This package combines the major gears, bearings, seals, clutch components, water pump parts, and hardware needed for a comprehensive lower-unit rebuild in one kit.

Fitment

• Mercury & Mariner 60 HP BigFoot 6-jaw applications — 1998-2006
• Mercury & Mariner 75-90 HP 3-cylinder 6-jaw applications — 1998-2006
• Select Force 75 HP applications — 1999
• Select Force 90 HP 6-jaw applications — 1998-1999
• Model and serial number verification recommended before ordering

What's Included

• 6-Jaw Gear Set — replaces Mercury 43-850034T and 43-859472A3
• 6-Dog Reverse Clutch Dog — replaces Mercury 52-850048T
• Clutch Dog Spring — replaces Mercury 24-30893
• Clutch Dog Pin — replaces Mercury 17-30632
• Pinion Nut — replaces Mercury 11-35921
• Water Pump / Impeller Service Kit — replaces Mercury 47-43026T11
• Gearcase Seal Kit — replaces Mercury 26-43035A4
• Shim Kit — replaces Mercury 44491A1 and 44492A1
• Complete Gearcase Bearing Kit

Bearing Kit Includes

• Inner Forward Gear Bearing — replaces 31-30895T
• Outer Forward Gear Bearing — replaces 31-30894A1
• Bottom Driveshaft Bearing — replaces 31-42677A1
• Reverse Gear Thrust Bearing — replaces 31-12576T
• Aft Carrier Bearing — replaces 31-30956T
• Forward Carrier Bearing — replaces 31-12578A
• Top Driveshaft Bearing

Frequently Asked Questions

Does ME-BFL3 include the gear set?

Yes. This 1998-2006 version includes the 6-jaw gear set replacing Mercury 43-850034T and 43-859472A3.

Will this kit fit a 1987-1997 3-jaw lower unit?

No. This listing is specifically for the later 6-jaw configuration. The earlier 3-jaw gearcase uses different gear and clutch components.

Does the kit include bearings and seals?

Yes. The kit includes a complete bearing package, gearcase seal kit, and shim kit in addition to the gears and clutch components.

Is a water pump kit included?

Yes. An impeller service / water pump kit replacing Mercury 47-43026T11 is included.

How do I know whether my lower unit is the correct 6-jaw style?

Year and horsepower are helpful, but lower-unit configurations can vary. If you are unsure, send us your engine model and serial number before ordering so we can help confirm the application.

Individual Lower Unit Parts

Need an individual component instead of the complete kit? Shop our Mercury/Mariner 60 HP BigFoot and L3 70-90 HP lower unit parts for available gears, bearings, seals, clutch components, shafts, and other gearcase parts.