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.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
Mercury Complete Gearcase Counter-Rotation XX-Long CMB Grey 8M0189229
Mercury
MSRP: $16,125.00$13,706.25Mercury Complete Gearcase Counter-Rotation XX-Long CMB Grey 8M0189229 is a genuine Mercury Marine OEM complete gearcase / lower unit for the compatible application and configuration listed below.This...8M0189229- SKU:
- 8M0189229
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $16,125.00$13,706.25 -
On Sale
Mercury Gear Case SM CXL CMB GRY OEM 8M0236174
Mercury
MSRP: $16,090.00Now: $14,187.60Was: $16,090.00Genuine Mercury Gear Case SM CXL CMB GRY, part number 8M0236174. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0159671, 8M0189225.8M0236174- SKU:
- 8M0236174
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $16,090.00Now: $14,187.60Was: $16,090.00Qty in Cart: 0Quantity:Price:MSRP: $16,090.00Now: $14,187.60Was: $16,090.00Subtotal: -
On Sale
Mercury Gear Case SM XL 1.60 GRY OEM 8M0236316
Mercury
MSRP: $16,090.00Now: $14,187.60Was: $16,090.00Genuine Mercury Gear Case SM XL 1.60 GRY, part number 8M0236316. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0159663.8M0236316- SKU:
- 8M0236316
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $16,090.00Now: $14,187.60Was: $16,090.00Qty in Cart: 0Quantity:Price:MSRP: $16,090.00Now: $14,187.60Was: $16,090.00Subtotal: -
Mercury Complete Gearcase Sport Master X Long Cambered Grey 8M0236319
Mercury
MSRP: $16,090.00$13,676.50Mercury Complete Gearcase Sport Master X Long Cambered Grey 8M0236319 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible applications and configuration...8M0236319- SKU:
- 8M0236319
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $16,090.00$13,676.50 -
Mercury Complete Gearcase Sport Master 1.60:1 Counter Rotation X Long SL 8M0236172
Mercury
MSRP: $16,090.00$13,676.50Mercury Complete Gearcase Sport Master 1.60:1 Counter Rotation X Long SL 8M0236172 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible applications and...8M0236172- SKU:
- 8M0236172
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $16,090.00$13,676.50 -
On Sale
Mercury Gear Case L CMB 1.60 SLV OEM 8M0236318
Mercury
MSRP: $16,020.00Now: $14,124.60Was: $16,020.00Genuine Mercury Gear Case L CMB 1.60 SLV, part number 8M0236318. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0159667.8M0236318- SKU:
- 8M0236318
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,312.00 Ounces
MSRP: $16,020.00Now: $14,124.60Was: $16,020.00Qty in Cart: 0Quantity:Price:MSRP: $16,020.00Now: $14,124.60Was: $16,020.00Subtotal: -
On Sale
Mercury Gear Case SM L 1.60 GRY OEM 8M0236315
Mercury
MSRP: $16,020.00Now: $14,124.60Was: $16,020.00Genuine Mercury Gear Case SM L 1.60 GRY, part number 8M0236315. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0159661.8M0236315- SKU:
- 8M0236315
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,920.00 Ounces
MSRP: $16,020.00Now: $14,124.60Was: $16,020.00Qty in Cart: 0Quantity:Price:MSRP: $16,020.00Now: $14,124.60Was: $16,020.00Subtotal: -
On Sale
Mercury Gear Case SM CL CMB GREY OEM 8M0236171
Mercury
MSRP: $16,020.00Now: $14,124.60Was: $16,020.00Genuine Mercury Gear Case SM CL CMB GREY, part number 8M0236171. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0159670, 8M0189221.8M0236171- SKU:
- 8M0236171
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $16,020.00Now: $14,124.60Was: $16,020.00Qty in Cart: 0Quantity:Price:MSRP: $16,020.00Now: $14,124.60Was: $16,020.00Subtotal: -
On Sale
Mercury Gear Case SM CL GRPH GRY OEM 8M0236170
Mercury
MSRP: $16,020.00Now: $14,124.60Was: $16,020.00Genuine Mercury Gear Case SM CL GRPH GRY, part number 8M0236170. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0159662, 8M0189219.8M0236170- SKU:
- 8M0236170
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,424.00 Ounces
MSRP: $16,020.00Now: $14,124.60Was: $16,020.00Qty in Cart: 0Quantity:Price:MSRP: $16,020.00Now: $14,124.60Was: $16,020.00Subtotal: -
On Sale
Mercury Gear Case SM 1.75 OEM 8M0236282
Mercury
MSRP: $15,910.00Now: $14,030.10Was: $15,910.00Genuine Mercury Gear Case SM 1.75, part number 8M0236282. Designed for use with compatible applications.8M0236282- SKU:
- 8M0236282
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $15,910.00Now: $14,030.10Was: $15,910.00Qty in Cart: 0Quantity:Price:MSRP: $15,910.00Now: $14,030.10Was: $15,910.00Subtotal: -
On Sale
Mercury Racing Sport Master 1.75:1 Complete Gearcase 8M0236281
Mercury
MSRP: $15,910.00Now: $14,030.10Was: $15,910.00Mercury Racing Sport Master Complete Gearcase 8M0236281 is a genuine OEM gearcase assembly with a 1.75:1 gear ratio. It is designed for compatible Mercury Racing high-performance outboard...8M0236281- SKU:
- 8M0236281
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $15,910.00Now: $14,030.10Was: $15,910.00Qty in Cart: 0Quantity:Price:MSRP: $15,910.00Now: $14,030.10Was: $15,910.00Subtotal: -
Mercury Racing 450R Sport Master 1.60:1 Counter-Rotation Long Complete Gearcase (Graphite Gray) 8M0189219
Mercury
Mercury Racing Sport Master Complete Gearcase 8M0189219 is a genuine OEM replacement gearcase for the Mercury Racing 450R 4.6L V8. This Sport Master configuration has a 1.60:1 gear ratio,...8M0189219- SKU:
- 8M0189219
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,376.00 Ounces
Qty in Cart: 0Quantity:Price:Subtotal: -
On Sale
Mercury GEARCASE ASSEMBLY OEM 8M0116601
Mercury
MSRP: $15,325.00Now: $13,513.50Was: $15,325.00Genuine Mercury GEARCASE ASSEMBLY, part number 8M0116601. Designed for use with compatible applications.8M0116601- SKU:
- 8M0116601
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,376.00 Ounces
MSRP: $15,325.00Now: $13,513.50Was: $15,325.00Qty in Cart: 0Quantity:Price:MSRP: $15,325.00Now: $13,513.50Was: $15,325.00Subtotal: -
Mercury Complete Gearcase Sport Master CS 1.75:1 Silver 8M0237832
Mercury
MSRP: $15,175.00$12,898.75Mercury Complete Gearcase Sport Master CS 1.75:1 Silver 8M0237832 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible applications and configuration listed...8M0237832- SKU:
- 8M0237832
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $15,175.00$12,898.75 -
Mercury Racing Sport Master 1.75:1 Complete Gearcase (Silver) 8M0237830
Mercury
MSRP: $15,175.00$12,898.75Mercury Racing Sport Master Complete Gearcase 8M0237830 is a genuine OEM gearcase assembly with a 1.75:1 gear ratio and Silver finish. It is designed for compatible Mercury Racing high-performance...8M0237830- SKU:
- 8M0237830
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $15,175.00$12,898.75 -
Mercury Complete Gearcase Sport Master S 1.75:1 Silver 8M0237831
Mercury
MSRP: $15,175.00$12,898.75Mercury Complete Gearcase Sport Master S 1.75:1 Silver 8M0237831 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible applications and configuration listed...8M0237831- SKU:
- 8M0237831
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $15,175.00$12,898.75 -
Mercury Complete Gearcase Sport Master 1.60:1 CS Silver 8M0237828
Mercury
MSRP: $15,170.00$12,894.50Mercury Complete Gearcase Sport Master 1.60:1 CS Silver 8M0237828 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible applications and configuration listed...8M0237828- SKU:
- 8M0237828
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $15,170.00$12,894.50 -
Mercury Complete Gearcase Sport Master 1.60:1 S Silver 8M0237825
Mercury
MSRP: $15,170.00$12,894.50Mercury Complete Gearcase Sport Master 1.60:1 S Silver 8M0237825 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible applications and configuration listed...8M0237825- SKU:
- 8M0237825
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $15,170.00$12,894.50 -
Mercury Sport Master 1.75:1 XX-Long Counter-Rotation Complete Gearcase 8M0236280
Mercury
MSRP: $14,825.00$12,601.25Mercury Sport Master 1.75:1 XX-Long Counter-Rotation Complete Gearcase 8M0236280 is a genuine Mercury Marine OEM complete gearcase / lower unit for the compatible application and configuration listed...8M0236280- SKU:
- 8M0236280
- Availability:
- Usually Ships within 24hours
- Weight:
- 1,456.00 Ounces
MSRP: $14,825.00$12,601.25 -
Mercury Complete Gearcase Sport Master Counter Rotation XX Long 1.75:1 8M0236311
Mercury
MSRP: $14,670.00$12,469.50Mercury Complete Gearcase Sport Master Counter Rotation XX Long 1.75:1 8M0236311 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible applications and...8M0236311- SKU:
- 8M0236311
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $14,670.00$12,469.50
Prefer to Call? (727) 596-5929