Mercury 8M0146658 Reverse Gear, 5.44-Inch Torpedo, 1.85:1

Mercury 8M0146658 Reverse Gear, 5.44-Inch Torpedo, 1.85:1

Mercury 8M0146658 is a genuine OEM 24-tooth reverse gear for select Mercury outboards with a 5.44-inch Torpedo gearcase, standard right-hand rotation, and a 1.85:1 (13/24) gear ratio. It installs in the gear housing and propeller shaft assembly.

Applications

Catalog examples for this gearcase configuration include:

• Mercury 3.4L V6 FourStroke: Select 175, 200, and 225 HP models, including 200 HP SeaPro. Catalog examples for the 200 and 225 HP models start at serial 2B529482.
• Mercury 4.6L V8 Verado: Select 250 and 300 HP models, serial 2B529482 and up.
• Mercury Racing 300R 4.6L V8: Select models with the standard-rotation 5.44-inch Torpedo gearcase and the 1.85:1 ratio.

Match the engine serial number, gearcase, rotation, and ratio. On diagrams that show both ratio options at callout 20, select 8M0146658 for the 1.85:1 configuration.

Key Facts

• Brand: Mercury Marine
• Part number: 8M0146658 (catalog reference 43-8M0146658)
• Reverse gear teeth: 24
• Gearcase: 5.44-inch Torpedo, standard right-hand rotation
• Gear ratio: 1.85:1 (13/24)
• UPC: 745061238190

What’s Included

One Mercury 8M0146658 reverse gear. The bearing, bearing carrier, and forward gear and pinion set are separate service parts.

Shipping & Returns

Sold individually. See our Refund Policy for return details.

Service Notes

Refer to the Mercury service manual for the installed gearcase. Inspect the mating gears and clutch and follow the specified shimming and backlash checks during assembly.