Lower Units & Gearcases
Shop genuine Mercury lower units, complete gearcase assemblies, and replacement gearcase components for a variety of Mercury outboard applications. Find OEM gearcases and related components designed for proper fitment and reliable performance.
Mercury gearcase fitment can vary by engine serial number, model, shaft length, gear ratio, rotation, and application. If you're not sure which lower unit you need, visit our Lower Unit & Gearcase Guide to learn more about fitment and replacement options.
Need help confirming fitment? Have your engine serial number ready and contact our team at (727) 596-5929.
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On Sale
Mercury Gear Case BRAVO III SC OEM 8866J24
Mercury
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43Genuine Mercury Gear Case BRAVO III SC, part number 8866J24. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8866J03.8866J24- SKU:
- 8866J24
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,312.00 Ounces
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43 -
On Sale
Mercury Gear Case BRAVO III OEM 8M0046735
Mercury
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43Genuine Mercury Gear Case BRAVO III, part number 8M0046735. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8866A24, 8866A36, 8866A45, 8866A66, 8866G03,...8M0046735- SKU:
- 8M0046735
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,280.00 Ounces
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43 -
On Sale
Mercury Gear Case BRAVO III OEM 8M0046733
Mercury
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43Genuine Mercury Gear Case BRAVO III, part number 8M0046733. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8866A19, 8866A37, 8866A46, 8866A65, 8866G02,...8M0046733- SKU:
- 8M0046733
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,280.00 Ounces
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43 -
On Sale
Mercury Gear Case BRAVO II SC OEM 8294J01
Mercury
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43Genuine Mercury Gear Case BRAVO II SC, part number 8294J01. Designed for use with compatible applications.8294J01- SKU:
- 8294J01
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,120.00 Ounces
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43 -
On Sale
Mercury Gear Case BRAVO II SC OEM 8294J02
Mercury
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43Genuine Mercury Gear Case BRAVO II SC, part number 8294J02. Designed for use with compatible applications.8294J02- SKU:
- 8294J02
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,072.00 Ounces
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43 -
On Sale
Mercury Gear Case BRAVO I SC OEM 8866J01
Mercury
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43Genuine Mercury Gear Case BRAVO I SC, part number 8866J01. Designed for use with compatible applications.8866J01- SKU:
- 8866J01
- Availability:
- Usually Ships within 24hours
- Weight:
- 960.00 Ounces
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43 -
On Sale
Mercury Gear Case BRAVO I DWP OEM 8866A63
Mercury
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43Genuine Mercury Gear Case BRAVO I DWP, part number 8866A63. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8866A15.8866A63- SKU:
- 8866A63
- Availability:
- Usually Ships within 24hours
- Weight:
- 976.00 Ounces
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43 -
On Sale
Mercury Gear Case BRAVO II OEM 8294A19
Mercury
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43Genuine Mercury Gear Case BRAVO II, part number 8294A19. Designed for use with compatible applications.8294A19- SKU:
- 8294A19
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,152.00 Ounces
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43 -
On Sale
Mercury Gear Case BRAVO II OEM 8294A16
Mercury
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43Genuine Mercury Gear Case BRAVO II, part number 8294A16. Designed for use with compatible applications.8294A16- SKU:
- 8294A16
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,072.00 Ounces
MSRP: $6,811.43Now: $6,334.49Was: $6,811.43 -
On Sale
Mercury Gear Case 450R SM BASIC OEM 8M0187436
Mercury
MSRP: $6,740.00Now: $5,940.90Was: $6,740.00Genuine Mercury Gear Case 450R SM BASIC, part number 8M0187436. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0159712.8M0187436- SKU:
- 8M0187436
- Availability:
- Usually Ships within 24hours
- Weight:
- 640.00 Ounces
MSRP: $6,740.00Now: $5,940.90Was: $6,740.00 -
On Sale
Mercury SeaPro 150 HP 2.08:1 X-Long Complete Gearcase 8M0236153
Mercury
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55Mercury SeaPro 150 HP 2.08:1 X-Long Complete Gearcase 8M0236153 is a genuine Mercury OEM gearcase for compatible 150 HP SeaPro four-stroke outboards. It features a 2.08:1 gear ratio and X-Long shaft...8M0236153- SKU:
- 8M0236153
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55 -
On Sale
Mercury SeaPro 150 HP 2.08:1 Long Complete Gearcase 8M0236152
Mercury
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55Mercury SeaPro 150 HP 2.08:1 Long Complete Gearcase 8M0236152 is a genuine Mercury OEM complete gearcase for compatible Mercury 150 HP SeaPro four-stroke outboards. It features a 2.08:1 gear ratio...8M0236152- SKU:
- 8M0236152
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55 -
On Sale
Mercury 150 Pro XS 2.08:1 Long Complete Gearcase 8M0236235
Mercury
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55Mercury 150 Pro XS 2.08:1 Long Complete Gearcase 8M0236235 is a genuine Mercury OEM complete gearcase for compatible Mercury 150 HP Pro XS FourStroke outboards. OEM parts information identifies...8M0236235- SKU:
- 8M0236235
- Availability:
- Usually Ships within 24hours
- Weight:
- 960.00 Ounces
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55 -
On Sale
Mercury Gear Case ASSY-XL SILVER OEM 8M0236236
Mercury
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55Genuine Mercury Gear Case ASSY-XL SILVER, part number 8M0236236. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0144442, 8M0228057.8M0236236- SKU:
- 8M0236236
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,056.00 Ounces
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55 -
On Sale
Mercury 150 FourStroke Counter-Rotation X-Long Complete Gearcase 8M0230765
Mercury
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55Mercury 150 FourStroke Counter-Rotation X-Long Complete Gearcase 8M0230765 is a genuine Mercury OEM complete gearcase for compatible Mercury 150 HP FourStroke EFI outboards. This configuration is...8M0230765- SKU:
- 8M0230765
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,040.00 Ounces
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55 -
On Sale
Mercury 150 FourStroke X-Long Complete Gearcase 8M0230764
Mercury
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55Mercury 150 FourStroke X-Long Complete Gearcase 8M0230764 is a genuine Mercury OEM complete gearcase assembly for compatible Mercury 150 HP FourStroke EFI outboards. This 150 FourStroke EFI...8M0230764- SKU:
- 8M0230764
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55 -
On Sale
Mercury 150 FourStroke Long Complete Gearcase 8M0230763
Mercury
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55Mercury 150 FourStroke Long Complete Gearcase 8M0230763 is a genuine Mercury OEM complete gearcase assembly for compatible Mercury 150 HP FourStroke EFI outboards. This 150 FourStroke EFI...8M0230763- SKU:
- 8M0230763
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55 -
Mercury 150 Pro XS / SeaPro Complete Gearcase 8M0187303
Mercury
MSRP: $6,678.55$5,676.77Mercury 150 Pro XS / SeaPro Complete Gearcase 8M0187303 is a genuine Mercury Marine OEM complete replacement lower unit for the compatible applications listed below.This is an assembled replacement...8M0187303- SKU:
- 8M0187303
- Availability:
- Usually Ships within 24hours
- Weight:
- 992.00 Ounces
MSRP: $6,678.55$5,676.77 -
On Sale
Mercury 150 HP SeaPro Counter-Rotation Complete Gearcase 8M0099914
Mercury
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55Mercury Complete Gearcase 8M0099914 is an OEM replacement lower unit designed for select Mercury 150 HP EFI SeaPro FourStroke outboards. This SeaPro-specific assembly is the counter-rotat8M0099914- SKU:
- 8M0099914
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,008.00 Ounces
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55 -
On Sale
Mercury 150 HP SeaPro XL Complete Gearcase 8M0099910
Mercury
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55Mercury Complete Gearcase 8M0099910 is an OEM replacement lower unit designed for select Mercury 150 HP EFI SeaPro FourStroke outboards. This SeaPro-specific gearcase is the standard-rotation XL...8M0099910- SKU:
- 8M0099910
- Availability:
- Usually Ships within 24hours
- Weight:
- 972.80 Ounces
MSRP: $6,678.55Now: $5,890.50Was: $6,678.55
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