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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- Price
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Mercury Complete Gearcase Sport Master 1.75:1 Counter Rotation XX Long 8M0236300
Mercury
MSRP: $14,025.00$11,921.25Mercury Complete Gearcase Sport Master 1.75:1 Counter Rotation XX Long 8M0236300 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible applications and...8M0236300- SKU:
- 8M0236300
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $14,025.00$11,921.25 -
On Sale
Mercury Gear Case XLONG CAMB SM OEM 8M0146129
Mercury
MSRP: $13,985.00Now: $12,329.10Was: $13,985.00Genuine Mercury Gear Case XLONG CAMB SM, part number 8M0146129. Designed for use with compatible applications.8M0146129- SKU:
- 8M0146129
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,376.00 Ounces
MSRP: $13,985.00Now: $12,329.10Was: $13,985.00Qty in Cart: 0Quantity:Price:MSRP: $13,985.00Now: $12,329.10Was: $13,985.00Subtotal: -
On Sale
Mercury Gear Case CXLONG SM OEM 8M0146125
Mercury
MSRP: $13,985.00Now: $12,329.10Was: $13,985.00Genuine Mercury Gear Case CXLONG SM, part number 8M0146125. Designed for use with compatible applications.8M0146125- SKU:
- 8M0146125
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,312.00 Ounces
MSRP: $13,985.00Now: $12,329.10Was: $13,985.00Qty in Cart: 0Quantity:Price:MSRP: $13,985.00Now: $12,329.10Was: $13,985.00Subtotal: -
Mercury Complete Gearcase XX Long Cambered Sport Master 8M0146130
Mercury
MSRP: $13,955.00$11,861.75Mercury Complete Gearcase XX Long Cambered Sport Master 8M0146130 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible applications and configuration listed...8M0146130- SKU:
- 8M0146130
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $13,955.00$11,861.75 -
Mercury Racing Sport Master 1.75:1 X-Long Standard-Rotation Cambered Complete Gearcase 8M0236296
Mercury
MSRP: $13,860.00$11,781.00Mercury Racing Sport Master 1.75:1 X-Long Standard-Rotation Cambered Complete Gearcase 8M0236296 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible...8M0236296- SKU:
- 8M0236296
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,360.00 Ounces
MSRP: $13,860.00$11,781.00 -
Mercury Complete Gearcase Sport Master 1.75:1 XX-Long Long Right Hand 8M0236297
Mercury
MSRP: $13,805.00$11,734.25Mercury Complete Gearcase Sport Master 1.75:1 XX-Long Long Right Hand 8M0236297 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible applications and...8M0236297- SKU:
- 8M0236297
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $13,805.00$11,734.25 -
Mercury Complete Gearcase Sport Master 1.75:1 Counter Rotation Long 8M0236298
Mercury
MSRP: $13,585.00$11,547.25Mercury Complete Gearcase Sport Master 1.75:1 Counter Rotation Long 8M0236298 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible applications and...8M0236298- SKU:
- 8M0236298
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $13,585.00$11,547.25 -
On Sale
Mercury Gear Case SM 1.75 CXL OEM 8M0236299
Mercury
MSRP: $13,275.00Now: $11,705.40Was: $13,275.00Genuine Mercury Gear Case SM 1.75 CXL, part number 8M0236299. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0102793, 8M0137082.8M0236299- SKU:
- 8M0236299
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,344.00 Ounces
MSRP: $13,275.00Now: $11,705.40Was: $13,275.00Qty in Cart: 0Quantity:Price:MSRP: $13,275.00Now: $11,705.40Was: $13,275.00Subtotal: -
On Sale
Mercury Gear Case SM 15/17 S OEM 8M0238294
Mercury
MSRP: $13,270.00Now: $11,699.10Was: $13,270.00Genuine Mercury Gear Case SM 15/17 S, part number 8M0238294. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0091429.8M0238294- SKU:
- 8M0238294
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $13,270.00Now: $11,699.10Was: $13,270.00Qty in Cart: 0Quantity:Price:MSRP: $13,270.00Now: $11,699.10Was: $13,270.00Subtotal: -
On Sale
Mercury Gear Case SM 15/19 S OEM 8M0238296
Mercury
MSRP: $13,270.00Now: $11,699.10Was: $13,270.00Genuine Mercury Gear Case SM 15/19 S, part number 8M0238296. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0091432.8M0238296- SKU:
- 8M0238296
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $13,270.00Now: $11,699.10Was: $13,270.00Qty in Cart: 0Quantity:Price:MSRP: $13,270.00Now: $11,699.10Was: $13,270.00Subtotal: -
On Sale
Mercury Gear Case SM 15/19 L OEM 8M0238293
Mercury
MSRP: $12,745.00Now: $11,239.20Was: $12,745.00Genuine Mercury Gear Case SM 15/19 L, part number 8M0238293. Designed for use with compatible applications.8M0238293- SKU:
- 8M0238293
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $12,745.00Now: $11,239.20Was: $12,745.00Qty in Cart: 0Quantity:Price:MSRP: $12,745.00Now: $11,239.20Was: $12,745.00Subtotal: -
On Sale
Mercury CXXL Sport Gearcase Assembly (Silver) 8M0235801
Mercury
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Mercury CXXL Sport Gearcase Assembly 8M0235801 is a genuine Mercury OEM complete gearcase designed for select high-horsepower Mercury outboard applications. This CXXL configuration features Mercury's...8M0235801- SKU:
- 8M0235801
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Qty in Cart: 0Quantity:Price:MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Subtotal: -
On Sale
Mercury Gear Case 5.44 CXL 1.75 OEM 8M0238533
Mercury
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Genuine Mercury Gear Case 5.44 CXL 1.75, part number 8M0238533. Designed for use with compatible applications.8M0238533- SKU:
- 8M0238533
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Qty in Cart: 0Quantity:Price:MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Subtotal: -
Mercury 5.44-Inch 1.75:1 X-Long Complete Gearcase 8M0238532
Mercury
MSRP: $12,600.00$10,710.00Mercury 5.44-Inch 1.75:1 X-Long Complete Gearcase 8M0238532 is a genuine Mercury OEM complete gearcase assembly. This gearcase features a 5.44-inch torpedo, 1.75:1 gear ratio, standard rotation, and...8M0238532- SKU:
- 8M0238532
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $12,600.00$10,710.00 -
On Sale
Mercury Gear Case 5.44 L 1.75 OEM 8M0238530
Mercury
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Genuine Mercury Gear Case 5.44 L 1.75, part number 8M0238530. Designed for use with compatible applications.8M0238530- SKU:
- 8M0238530
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Qty in Cart: 0Quantity:Price:MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Subtotal: -
On Sale
Mercury 350-400 HP V10 SeaPro XXL Complete Gearcase (Silver) 8M0235793
Mercury
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Mercury Complete Gearcase 8M0235793 is a genuine Mercury OEM replacement lower unit for select 5.7L V10 outboards. This assembly is the XXL, silver SeaPro configuration and is us8M0235793- SKU:
- 8M0235793
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Qty in Cart: 0Quantity:Price:MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Subtotal: -
On Sale
Mercury 350-400 HP V10 Counter-Rotation XXXL Complete Gearcase (Silver) 8M0235768
Mercury
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Mercury Complete Gearcase 8M0235768 is a genuine Mercury OEM replacement lower unit for select 5.7L V10 outboards. This assembly is the silver, counter-rotation, XXXL configuration8M0235768- SKU:
- 8M0235768
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,696.00 Ounces
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Qty in Cart: 0Quantity:Price:MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Subtotal: -
On Sale
Mercury 350-400 HP V10 Counter-Rotation XXL Complete Gearcase (Silver) 8M0235767
Mercury
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Mercury Complete Gearcase 8M0235767 is a genuine Mercury OEM replacement lower unit for select 350-400 HP 5.7L V10 outboards. This assembly is the silver, counter-rotation, XXL configurat8M0235767- SKU:
- 8M0235767
- Availability:
- Usually Ships within 24hours
- Weight:
- 2,000.00 Ounces
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Qty in Cart: 0Quantity:Price:MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Subtotal: -
On Sale
Mercury 350 HP V10 SeaPro Counter-Rotation Long Complete Gearcase (Silver) 8M0235800
Mercury
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Mercury Complete Gearcase 8M0235800 is a genuine Mercury OEM replacement lower unit for select 350 HP 5.7L V10 SeaPro outboards. This assembly is the silver, counter-rotation, Long SeaPro8M0235800- SKU:
- 8M0235800
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Qty in Cart: 0Quantity:Price:MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Subtotal: -
On Sale
Mercury 350 HP V10 SeaPro Long Complete Gearcase (Silver) 8M0235791
Mercury
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Mercury Complete Gearcase 8M0235791 is a genuine Mercury OEM replacement lower unit for select 350 HP 5.7L V10 SeaPro outboards. This assembly is the silver, standard-rotation, Long SeaPr8M0235791- SKU:
- 8M0235791
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Qty in Cart: 0Quantity:Price:MSRP: $12,600.00Now: $11,113.20Was: $12,600.00Subtotal:
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