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 SeaPro 60 HP 2.33:1 LL-Long Complete Gearcase 8M0118187
Mercury
MSRP: $4,292.85Now: $3,786.30Was: $4,292.85Mercury SeaPro Complete Gearcase 8M0118187 is a genuine OEM replacement gearcase for compatible Mercury 60 HP SeaPro FourStroke outboards. This SeaPro-specific configuration uses a 2.33:1 gear ratio...8M0118187- SKU:
- 8M0118187
- Availability:
- Usually Ships within 24hours
- Weight:
- 976.00 Ounces
MSRP: $4,292.85Now: $3,786.30Was: $4,292.85 -
On Sale
Mercury Gear Case COMP 3.0L CXL OEM 8M0236248
Mercury
MSRP: $4,114.30Now: $3,628.80Was: $4,114.30Genuine Mercury Gear Case COMP 3.0L CXL, part number 8M0236248. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 859399R16, 859399T16.8M0236248- SKU:
- 8M0236248
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,088.00 Ounces
MSRP: $4,114.30Now: $3,628.80Was: $4,114.30 -
On Sale
Mercury 3.0L Counter-Rotation XX-Long Complete Gearcase 859399T17
Mercury
MSRP: $4,114.30Now: $3,628.80Was: $4,114.30Mercury 3.0L Counter-Rotation XX-Long Complete Gearcase 859399T17 is a genuine Mercury OEM complete gearcase assembly for compatible Mercury 3.0L outboards. This gearcase is configured for counter...859399T17- SKU:
- 859399T17
- Availability:
- Usually Ships within 24hours
- Weight:
- 992.00 Ounces
MSRP: $4,114.30Now: $3,628.80Was: $4,114.30 -
On Sale
Mercury Gear Case-BASIC CHMBR GR OEM 8M0219310
Mercury
MSRP: $3,950.00Now: $3,483.90Was: $3,950.00Genuine Mercury Gear Case-BASIC CHMBR GR, part number 8M0219310. Designed for use with compatible applications.8M0219310- SKU:
- 8M0219310
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $3,950.00Now: $3,483.90Was: $3,950.00 -
On Sale
Mercury Gear Case-BASIC STD GR OEM 8M0219308
Mercury
MSRP: $3,950.00Now: $3,483.90Was: $3,950.00Genuine Mercury Gear Case-BASIC STD GR, part number 8M0219308. Designed for use with compatible applications.8M0219308- SKU:
- 8M0219308
- Availability:
- Usually Ships within 24hours
- Weight:
- 656.00 Ounces
MSRP: $3,950.00Now: $3,483.90Was: $3,950.00 -
On Sale
Mercury Racing 500R R-Drive Basic Left-Camber Gear Housing (Graphite Gray) 8M0219306
Mercury
MSRP: $3,950.00Now: $3,483.90Was: $3,950.00Mercury Racing Gear Housing Assembly 8M0219306 is a genuine OEM basic gear housing for the Mercury Racing 500R 4.6L V8 R-Drive 1.60 gearcase. This configuration features the left-camber housing...8M0219306- SKU:
- 8M0219306
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $3,950.00Now: $3,483.90Was: $3,950.00 -
On Sale
Mercury Racing 500R R-Drive Basic Standard Gear Housing (Graphite Gray) 8M0219304
Mercury
MSRP: $3,950.00Now: $3,483.90Was: $3,950.00Mercury Racing Basic Gear Housing 8M0219304 is a genuine OEM gear housing for the Mercury Racing 500R 4.6L V8 with the R-Drive 1.60:1 gearcase. This configuration uses the standard gear housing...8M0219304- SKU:
- 8M0219304
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $3,950.00Now: $3,483.90Was: $3,950.00 -
On Sale
Mercury Gear Case BRV III SC-BSC OEM 8866J30
Mercury
MSRP: $3,946.00Now: $3,480.37Was: $3,946.00Genuine Mercury Gear Case BRV III SC-BSC, part number 8866J30. Designed for use with compatible applications.8866J30- SKU:
- 8866J30
- Availability:
- Usually Ships within 24hours
- Weight:
- 576.00 Ounces
MSRP: $3,946.00Now: $3,480.37Was: $3,946.00 -
On Sale
Mercury Gear Case 2.5L CXL 1.8 OEM 9148T86
Mercury
MSRP: $3,864.30Now: $3,408.30Was: $3,864.30Genuine Mercury Gear Case 2.5L CXL 1.8, part number 9148T86. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 9148A30, 9148A76, 9148A86.9148T86- SKU:
- 9148T86
- Availability:
- Usually Ships within 24hours
- Weight:
- 976.00 Ounces
MSRP: $3,864.30Now: $3,408.30Was: $3,864.30 -
On Sale
Mercury Gear Case BRAVO II-BASIC OEM 8294A14
Mercury
MSRP: $3,858.36Now: $3,403.07Was: $3,858.36Genuine Mercury Gear Case BRAVO II-BASIC, part number 8294A14. Designed for use with compatible applications.8294A14- SKU:
- 8294A14
- Availability:
- Usually Ships within 24hours
- Weight:
- 576.00 Ounces
MSRP: $3,858.36Now: $3,403.07Was: $3,858.36 -
On Sale
Mercury Gear Case BRV III -BASIC OEM 8M0046683
Mercury
MSRP: $3,804.86Now: $3,355.88Was: $3,804.86Genuine Mercury Gear Case BRV III -BASIC, part number 8M0046683. Designed for use with compatible applications.8M0046683- SKU:
- 8M0046683
- Availability:
- Usually Ships within 24hours
- Weight:
- 640.00 Ounces
MSRP: $3,804.86Now: $3,355.88Was: $3,804.86 -
Mercury CPO V8 Verado 1.85:1 Counter-Rotation X-Long Complete Gearcase 8M0235774
Mercury
$3,743.75Mercury CPO Complete Gearcase 8M0235774 is a Mercury Certified Pre-Owned replacement gearcase for compatible 4.6L V8 Verado outboards. This configuration features a 1.85:1 gear ratio,...8M0235774- SKU:
- 8M0235774
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
$3,743.75 -
Mercury V8 Verado 1.75:1 X Long Complete Gearcase 8M0235786
Mercury
MSRP: $3,743.75$3,182.19Mercury V8 Verado 1.75:1 X Long Complete Gearcase 8M0235786 is a genuine Mercury Marine OEM replacement lower unit for compatible Mercury marine applications.This complete gearcase is supplied as an...8M0235786- SKU:
- 8M0235786
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $3,743.75$3,182.19 -
Mercury Complete Gearcase V8 175 L 8M0235770
Mercury
MSRP: $3,743.75$3,182.19Mercury Complete Gearcase V8 175 L 8M0235770 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible applications and configuration listed below.This is an...8M0235770- SKU:
- 8M0235770
- Availability:
- Usually Ships within 24hours
- Weight:
- 976.00 Ounces
MSRP: $3,743.75$3,182.19 -
Mercury CPO Gear Case V8-185-XL OEM 8M0235772
Mercury
$3,743.75Genuine Mercury CPO Gear Case V8-185-XL, part number 8M0235772. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0159735.8M0235772- SKU:
- 8M0235772
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
$3,743.75 -
Mercury Complete Gearcase V8 175 X Long 8M0235785
Mercury
MSRP: $3,743.75$3,182.19Mercury Complete Gearcase V8 175 X Long 8M0235785 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible applications and configuration listed below.This is an...8M0235785- SKU:
- 8M0235785
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,040.00 Ounces
MSRP: $3,743.75$3,182.19 -
Mercury CPO Gear Case V8-175-XL OEM 8M0235776
Mercury
$3,743.75Genuine Mercury CPO Gear Case V8-175-XL, part number 8M0235776. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0159728.8M0235776- SKU:
- 8M0235776
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,056.00 Ounces
$3,743.75 -
On Sale
Mercury Gear Case BASIC TM SILVR OEM 8M0228609
Mercury
MSRP: $3,699.49Now: $3,262.90Was: $3,699.49Genuine Mercury Gear Case BASIC TM SILVR, part number 8M0228609. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0072954.8M0228609- SKU:
- 8M0228609
- Availability:
- Usually Ships within 24hours
- Weight:
- 464.00 Ounces
MSRP: $3,699.49Now: $3,262.90Was: $3,699.49 -
On Sale
Mercury Gear Case BASIC SIL SP OEM 8M0228044
Mercury
MSRP: $3,651.49Now: $3,220.50Was: $3,651.49Genuine Mercury Gear Case BASIC SIL SP, part number 8M0228044. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0145772.8M0228044- SKU:
- 8M0228044
- Availability:
- Usually Ships within 24hours
- Weight:
- 512.00 Ounces
MSRP: $3,651.49Now: $3,220.50Was: $3,651.49 -
On Sale
Mercury Gear Case BRAVO I -BASIC OEM 8866A64
Mercury
MSRP: $3,636.93Now: $3,207.77Was: $3,636.93Genuine Mercury Gear Case BRAVO I -BASIC, part number 8866A64. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8866A17.8866A64- SKU:
- 8866A64
- Availability:
- Usually Ships within 24hours
- Weight:
- 556.80 Ounces
MSRP: $3,636.93Now: $3,207.77Was: $3,636.93
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