Lower Units & Gearcases
Shop Mercury lower units and gearcase assemblies including OEM replacement components designed for reliable outboard performance and proper fitment. Lower units and gearcases play a critical role in transferring engine power, supporting propeller operation, and maintaining smooth drivetrain performance on the water.
Gregor’s Marine carries genuine Mercury gearcase and lower unit components for a wide range of outboard applications.
Call our team at (727) 596-5929 for assistance confirming fitment.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
Mercury Gear Case 4-5-6HP B L OEM 8M0188414
Mercury
MSRP: $564.30$479.66Genuine Mercury Gear Case 4-5-6HP B L, part number 8M0188414. Designed for use with compatible applications.8M0188414- SKU:
- 8M0188414
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $564.30$479.66 -
Mercury Gear Case 4-5 2S B L OEM 8M0155373
Mercury
MSRP: $564.30$479.66Genuine Mercury Gear Case 4-5 2S B L, part number 8M0155373. Designed for use with compatible applications.8M0155373- SKU:
- 8M0155373
- Availability:
- Usually Ships within 24hours
- Weight:
- 232.00 Ounces
MSRP: $564.30$479.66 -
Mercury GEAR HOUSING OEM 8M0122304
Mercury
MSRP: $564.30$479.66Genuine Mercury GEAR HOUSING, part number 8M0122304. Designed for use with compatible applications.8M0122304- SKU:
- 8M0122304
- Availability:
- Usually Ships within 24hours
- Weight:
- 216.00 Ounces
MSRP: $564.30$479.66 -
Mercury Gear Case 4-5-6 2S 4S L OEM 8M0122308
Mercury
MSRP: $564.30$479.66Genuine Mercury Gear Case 4-5-6 2S 4S L, part number 8M0122308. Designed for use with compatible applications.8M0122308- SKU:
- 8M0122308
- Availability:
- Usually Ships within 24hours
- Weight:
- 181.01 Ounces
MSRP: $564.30$479.66 -
Mercury Gear Case 4/5/6 4S XLONG OEM 8M0063900
Mercury
MSRP: $564.30$479.66Genuine Mercury Gear Case 4/5/6 4S XLONG, part number 8M0063900. Designed for use with compatible applications.8M0063900- SKU:
- 8M0063900
- Availability:
- Usually Ships within 24hours
- Weight:
- 208.00 Ounces
MSRP: $564.30$479.66 -
Mercury Gear Case 25-30 4S B L OEM 8M0187032
Mercury
MSRP: $562.50$478.13Genuine Mercury Gear Case 25-30 4S B L, part number 8M0187032. Designed for use with compatible applications.8M0187032- SKU:
- 8M0187032
- Availability:
- Usually Ships within 24hours
- Weight:
- 352.00 Ounces
MSRP: $562.50$478.13 -
Mercury Gear Case 25-30 4S B S OEM 8M0187031
Mercury
MSRP: $562.50$478.13Genuine Mercury Gear Case 25-30 4S B S, part number 8M0187031. Designed for use with compatible applications.8M0187031- SKU:
- 8M0187031
- Availability:
- Usually Ships within 24hours
- Weight:
- 352.00 Ounces
MSRP: $562.50$478.13 -
Mercury Gear Case 25-30 4S B XL OEM 8M0187033
Mercury
MSRP: $562.50$478.13Genuine Mercury Gear Case 25-30 4S B XL, part number 8M0187033. Designed for use with compatible applications.8M0187033- SKU:
- 8M0187033
- Availability:
- Usually Ships within 24hours
- Weight:
- 368.00 Ounces
MSRP: $562.50$478.13 -
Mercury Gear Case BASIC 8/9.9 4S OEM 8M0070873
Mercury
MSRP: $557.49$473.87Genuine Mercury Gear Case BASIC 8/9.9 4S, part number 8M0070873. Designed for use with compatible applications.8M0070873- SKU:
- 8M0070873
- Availability:
- Usually Ships within 24hours
- Weight:
- 160.00 Ounces
MSRP: $557.49$473.87 -
Mercury GEAR HOUSING OEM 8M0131735
Mercury
MSRP: $553.49$470.47Genuine Mercury GEAR HOUSING, part number 8M0131735. Designed for use with compatible applications.8M0131735- SKU:
- 8M0131735
- Availability:
- Usually Ships within 24hours
- Weight:
- 256.00 Ounces
MSRP: $553.49$470.47 -
Mercury GEAR HOUSING B L OEM 8M0155377
Mercury
MSRP: $550.00$467.50Genuine Mercury GEAR HOUSING B L, part number 8M0155377. Designed for use with compatible applications.8M0155377- SKU:
- 8M0155377
- Availability:
- Usually Ships within 24hours
- Weight:
- 175.68 Ounces
MSRP: $550.00$467.50 -
Mercury TOOL-GEARCASE PIN OEM 8M2005712
Mercury
MSRP: $526.49$447.52Genuine Mercury TOOL-GEARCASE PIN, part number 8M2005712. Designed for use with compatible applications.8M2005712- SKU:
- 8M2005712
- Availability:
- Usually Ships within 24hours
- Weight:
- 104.00 Ounces
MSRP: $526.49$447.52 -
Mercury LOWER UNIT OEM 8M4005024
Mercury
MSRP: $518.16$440.44Genuine Mercury LOWER UNIT, part number 8M4005024. Designed for use with compatible applications.8M4005024- SKU:
- 8M4005024
- Availability:
- Usually Ships within 24hours
- Weight:
- 288.00 Ounces
MSRP: $518.16$440.44 -
Mercury Gear Case 8/9.9 4S BASIC OEM 8M0158623
Mercury
MSRP: $497.99$423.29Genuine Mercury Gear Case 8/9.9 4S BASIC, part number 8M0158623. Designed for use with compatible applications.8M0158623- SKU:
- 8M0158623
- Availability:
- Usually Ships within 24hours
- Weight:
- 96.00 Ounces
MSRP: $497.99$423.29 -
Mercury LOWER UNIT OEM 8M4005023
Mercury
MSRP: $482.99$410.54Genuine Mercury LOWER UNIT, part number 8M4005023. Designed for use with compatible applications.8M4005023- SKU:
- 8M4005023
- Availability:
- Usually Ships within 24hours
- Weight:
- 272.00 Ounces
MSRP: $482.99$410.54 -
Mercury Gear Case BASIC 6-9.8 2S OEM 803729A14
Mercury
MSRP: $457.99$389.29Genuine Mercury Gear Case BASIC 6-9.8 2S, part number 803729A14. Designed for use with compatible applications.803729A14- SKU:
- 803729A14
- Availability:
- Usually Ships within 24hours
- Weight:
- 113.60 Ounces
MSRP: $457.99$389.29 -
Mercury Gear Case-SUPPORT KIT OEM 8M0155308
Mercury
MSRP: $437.49$371.87Genuine Mercury Gear Case-SUPPORT KIT, part number 8M0155308. Designed for use with compatible applications.8M0155308- SKU:
- 8M0155308
- Availability:
- Usually Ships within 24hours
- Weight:
- 46.80 Ounces
MSRP: $437.49$371.87 -
Mercury Gear Case 2.5-3.3 2S L OEM 8M0122312
Mercury
MSRP: $407.15$346.08Genuine Mercury Gear Case 2.5-3.3 2S L, part number 8M0122312. Designed for use with compatible applications.8M0122312- SKU:
- 8M0122312
- Availability:
- Usually Ships within 24hours
- Weight:
- 176.00 Ounces
MSRP: $407.15$346.08 -
Mercury Gear Case 2-3.5 4S L OEM 8M0122310
Mercury
MSRP: $407.15$346.08Genuine Mercury Gear Case 2-3.5 4S L, part number 8M0122310. Designed for use with compatible applications.8M0122310- SKU:
- 8M0122310
- Availability:
- Usually Ships within 24hours
- Weight:
- 192.00 Ounces
MSRP: $407.15$346.08 -
Mercury Gear Case 2.5-3.3 2S S OEM 8M0122311
Mercury
MSRP: $407.15$346.08Genuine Mercury Gear Case 2.5-3.3 2S S, part number 8M0122311. Designed for use with compatible applications.8M0122311- SKU:
- 8M0122311
- Availability:
- Usually Ships within 24hours
- Weight:
- 160.00 Ounces
MSRP: $407.15$346.08
Prefer to Call? (727) 596-5929