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Lower Units & Gearcases

Lower Units & Gearcases

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 OEM CPO GC 1.75 LG, 8M0119636

    Mercury CPO Gear Case 1.75 LG OEM 8M0119636

    Mercury

    $3,618.75
    Genuine Mercury CPO Gear Case 1.75 LG, part number 8M0119636. Designed for use with compatible applications.
    8M0119636
    SKU:
    8M0119636
    Availability:
    Usually Ships within 24hours
    Weight:
    1,616.00 Ounces
    $3,618.75
    Qty in Cart: 0
    Quantity:
    Price:
    $3,618.75
    Subtotal:
  • MERCURY OEM CPO GC 1.62RH, 8M0119639

    Mercury CPO Gear Case 1.62RH OEM 8M0119639

    Mercury

    $3,618.75
    Genuine Mercury CPO Gear Case 1.62RH, part number 8M0119639. Designed for use with compatible applications.
    8M0119639
    SKU:
    8M0119639
    Availability:
    Usually Ships within 24hours
    Weight:
    1,600.00 Ounces
    $3,618.75
    Qty in Cart: 0
    Quantity:
    Price:
    $3,618.75
    Subtotal:
  • On Sale
    MERCURY OEM GEAR HOUSING, 827214T25

    Mercury GEAR HOUSING OEM 827214T25

    Mercury

    MSRP: $3,603.32
    Now: $3,177.18
    Was: $3,603.32
    Genuine Mercury GEAR HOUSING, part number 827214T25. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 827214A12, 827214A16, 827214A25, 827214A7, 827214A8,...
    827214T25
    SKU:
    827214T25
    Availability:
    Usually Ships within 24hours
    Weight:
    385.60 Ounces
    MSRP: $3,603.32
    Now: $3,177.18
    Was: $3,603.32
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,603.32
    Now: $3,177.18
    Was: $3,603.32
    Subtotal:
  • On Sale
    MERCURY OEM GC BASIC BLACK, 8M0142872

    Mercury Gear Case BASIC BLACK OEM 8M0142872

    Mercury

    MSRP: $3,595.49
    Now: $3,171.11
    Was: $3,595.49
    Genuine Mercury Gear Case BASIC BLACK, part number 8M0142872. Designed for use with compatible applications.
    8M0142872
    SKU:
    8M0142872
    Availability:
    Usually Ships within 24hours
    Weight:
    512.00 Ounces
    MSRP: $3,595.49
    Now: $3,171.11
    Was: $3,595.49
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,595.49
    Now: $3,171.11
    Was: $3,595.49
    Subtotal:
  • On Sale
    MERCURY OEM SPACER- 10 IN GC, 8M0177569

    Mercury SPACER- 10 IN Gear Case OEM 8M0177569

    Mercury

    MSRP: $3,508.49
    Now: $3,094.50
    Was: $3,508.49
    Genuine Mercury SPACER- 10 IN Gear Case, part number 8M0177569. Designed for use with compatible applications.
    8M0177569
    SKU:
    8M0177569
    Availability:
    Usually Ships within 24hours
    Weight:
    832.00 Ounces
    MSRP: $3,508.49
    Now: $3,094.50
    Was: $3,508.49
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,508.49
    Now: $3,094.50
    Was: $3,508.49
    Subtotal:
  • MERCURY OEM CPO GC V6-1.85-CX, 8M0235782

    Mercury CPO Gear Case V6-1.85-CX OEM 8M0235782

    Mercury

    $3,493.75
    Genuine Mercury CPO Gear Case V6-1.85-CX, part number 8M0235782. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0159722.
    8M0235782
    SKU:
    8M0235782
    Availability:
    Usually Ships within 24hours
    Weight:
    0.00 Ounces
    $3,493.75
    Qty in Cart: 0
    Quantity:
    Price:
    $3,493.75
    Subtotal:
  • MERCURY OEM CPO GC V6-1.85-XL, 8M0235778

    Mercury CPO Gear Case V6-1.85-XL OEM 8M0235778

    Mercury

    $3,493.75
    Genuine Mercury CPO Gear Case V6-1.85-XL, part number 8M0235778. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0159720.
    8M0235778
    SKU:
    8M0235778
    Availability:
    Usually Ships within 24hours
    Weight:
    0.00 Ounces
    $3,493.75
    Qty in Cart: 0
    Quantity:
    Price:
    $3,493.75
    Subtotal:
  • MERCURY OEM CPO GC V6-1.85-XX, 8M0235787

    Mercury Complete Gearcase V6 1.85:1 XX-Long 8M0235787

    Mercury

    MSRP: $3,493.75
    $2,969.69
    Mercury Complete Gearcase V6 1.85:1 XX-Long 8M0235787 is a genuine Mercury Marine OEM complete gear housing assembly / lower unit for the compatible applications and configuration listed below.This...
    8M0235787
    SKU:
    8M0235787
    Availability:
    Usually Ships within 24hours
    Weight:
    0.00 Ounces
    MSRP: $3,493.75
    $2,969.69
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,493.75
    $2,969.69
    Subtotal:
  • On Sale
    MERCURY OEM GC BR II SC-BASIC, 8294J00

    Mercury Gear Case BR II SC-BASIC OEM 8294J00

    Mercury

    MSRP: $3,449.79
    Now: $3,042.71
    Was: $3,449.79
    Genuine Mercury Gear Case BR II SC-BASIC, part number 8294J00. Designed for use with compatible applications.
    8294J00
    SKU:
    8294J00
    Availability:
    Usually Ships within 24hours
    Weight:
    592.00 Ounces
    MSRP: $3,449.79
    Now: $3,042.71
    Was: $3,449.79
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,449.79
    Now: $3,042.71
    Was: $3,449.79
    Subtotal:
  • On Sale
    MERCURY OEM GC COMP 3.0L XL, 8M0236242

    Mercury Gear Case COMP 3.0L XL OEM 8M0236242

    Mercury

    MSRP: $3,414.30
    Now: $3,011.40
    Was: $3,414.30
    Genuine Mercury Gear Case COMP 3.0L XL, part number 8M0236242. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 859399R14, 859399T14.
    8M0236242
    SKU:
    8M0236242
    Availability:
    Usually Ships within 24hours
    Weight:
    0.00 Ounces
    MSRP: $3,414.30
    Now: $3,011.40
    Was: $3,414.30
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,414.30
    Now: $3,011.40
    Was: $3,414.30
    Subtotal:
  • On Sale
    MERCURY OEM GC COMP 3.0L LG, 8M0236231

    Mercury Gear Case COMP 3.0L LG OEM 8M0236231

    Mercury

    MSRP: $3,414.30
    Now: $3,011.40
    Was: $3,414.30
    Genuine Mercury Gear Case COMP 3.0L LG, part number 8M0236231. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 859399R13, 859399T13.
    8M0236231
    SKU:
    8M0236231
    Availability:
    Usually Ships within 24hours
    Weight:
    1,056.00 Ounces
    MSRP: $3,414.30
    Now: $3,011.40
    Was: $3,414.30
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,414.30
    Now: $3,011.40
    Was: $3,414.30
    Subtotal:
  • On Sale
    MERCURY OEM GC 3.0L XXL BLK, 859399T15

    Mercury Gear Case 3.0L XXL BLK OEM 859399T15

    Mercury

    MSRP: $3,414.30
    Now: $3,011.40
    Was: $3,414.30
    Genuine Mercury Gear Case 3.0L XXL BLK, part number 859399T15. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 859399R15.
    859399T15
    SKU:
    859399T15
    Availability:
    Usually Ships within 24hours
    Weight:
    960.00 Ounces
    MSRP: $3,414.30
    Now: $3,011.40
    Was: $3,414.30
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,414.30
    Now: $3,011.40
    Was: $3,414.30
    Subtotal:
  • On Sale
    Mercury Bravo I Basic Gear Housing 8866A11 Mercury Bravo I Basic Gear Housing 8866A11

    Mercury Bravo I Basic Gear Housing 8866A11

    Mercury

    MSRP: $3,355.14
    Now: $2,959.24
    Was: $3,355.14
    Mercury Bravo I Basic Gear Housing 8866A11 is a genuine Mercury OEM replacement gear housing for compatible MerCruiser Bravo I sterndrives. This is a basic gear housing assembly intended for service...
    8866A11
    SKU:
    8866A11
    Availability:
    Usually Ships within 24hours
    Weight:
    560.00 Ounces
    MSRP: $3,355.14
    Now: $2,959.24
    Was: $3,355.14
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,355.14
    Now: $2,959.24
    Was: $3,355.14
    Subtotal:
  • On Sale
    MERCURY OEM GC 5.44 BASIC WHT, 8M0176877

    Mercury Gear Case 5.44 BASIC WHT OEM 8M0176877

    Mercury

    MSRP: $3,345.00
    Now: $2,948.40
    Was: $3,345.00
    Genuine Mercury Gear Case 5.44 BASIC WHT, part number 8M0176877. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0159704.
    8M0176877
    SKU:
    8M0176877
    Availability:
    Usually Ships within 24hours
    Weight:
    560.00 Ounces
    MSRP: $3,345.00
    Now: $2,948.40
    Was: $3,345.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,345.00
    Now: $2,948.40
    Was: $3,345.00
    Subtotal:
  • On Sale
    MERCURY OEM GC 5.44 CMB BAS W, 8M0176879

    Mercury Gear Case 5.44 CMB BAS W OEM 8M0176879

    Mercury

    MSRP: $3,345.00
    Now: $2,948.40
    Was: $3,345.00
    Genuine Mercury Gear Case 5.44 CMB BAS W, part number 8M0176879. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0159706.
    8M0176879
    SKU:
    8M0176879
    Availability:
    Usually Ships within 24hours
    Weight:
    560.00 Ounces
    MSRP: $3,345.00
    Now: $2,948.40
    Was: $3,345.00
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,345.00
    Now: $2,948.40
    Was: $3,345.00
    Subtotal:
  • On Sale
    MERCURY OEM GC - BASIC, 8M0228048

    Mercury Gear Case - BASIC OEM 8M0228048

    Mercury

    MSRP: $3,342.99
    Now: $2,948.34
    Was: $3,342.99
    Genuine Mercury Gear Case - BASIC, part number 8M0228048. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0053107, 8M0117251.
    8M0228048
    SKU:
    8M0228048
    Availability:
    Usually Ships within 24hours
    Weight:
    1,120.00 Ounces
    MSRP: $3,342.99
    Now: $2,948.34
    Was: $3,342.99
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,342.99
    Now: $2,948.34
    Was: $3,342.99
    Subtotal:
  • On Sale
    MERCURY OEM GC BASIC SILV TM, 8M0228039

    Mercury Gear Case BASIC SILV TM OEM 8M0228039

    Mercury

    MSRP: $3,342.49
    Now: $2,947.83
    Was: $3,342.49
    Genuine Mercury Gear Case BASIC SILV TM, part number 8M0228039. Designed for use with compatible applications. Replaces / supersedes Mercury part numbers: 8M0142852.
    8M0228039
    SKU:
    8M0228039
    Availability:
    Usually Ships within 24hours
    Weight:
    676.80 Ounces
    MSRP: $3,342.49
    Now: $2,947.83
    Was: $3,342.49
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,342.49
    Now: $2,947.83
    Was: $3,342.49
    Subtotal:
  • On Sale
    MERCURY OEM GC BRAVO I SC-BSC, 8866J00

    Mercury Gear Case BRAVO I SC-BSC OEM 8866J00

    Mercury

    MSRP: $3,310.07
    Now: $2,919.48
    Was: $3,310.07
    Genuine Mercury Gear Case BRAVO I SC-BSC, part number 8866J00. Designed for use with compatible applications.
    8866J00
    SKU:
    8866J00
    Availability:
    Usually Ships within 24hours
    Weight:
    529.60 Ounces
    MSRP: $3,310.07
    Now: $2,919.48
    Was: $3,310.07
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,310.07
    Now: $2,919.48
    Was: $3,310.07
    Subtotal:
  • MERCURY OEM CPO GC VERXXL5.44, 8M0235775

    Mercury Complete Gearcase Verado XXL5.44 8M0235775

    Mercury

    MSRP: $3,243.75
    $2,757.19
    Mercury Complete Gearcase Verado XXL5.44 8M0235775 is a genuine Mercury Marine OEM replacement lower unit for compatible Mercury marine applications.This complete gearcase is supplied as an assembled...
    8M0235775
    SKU:
    8M0235775
    Availability:
    Usually Ships within 24hours
    Weight:
    1,200.00 Ounces
    MSRP: $3,243.75
    $2,757.19
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,243.75
    $2,757.19
    Subtotal:
  • MERCURY OEM CPO GC VERCXL5.44, 8M0235771

    Mercury Complete Gearcase Verado CXL5.44 8M0235771

    Mercury

    MSRP: $3,243.75
    $2,757.19
    Mercury Complete Gearcase Verado CXL5.44 8M0235771 is a genuine Mercury Marine OEM replacement lower unit for compatible Mercury marine applications.This complete gearcase is supplied as an assembled...
    8M0235771
    SKU:
    8M0235771
    Availability:
    Usually Ships within 24hours
    Weight:
    1,200.00 Ounces
    MSRP: $3,243.75
    $2,757.19
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3,243.75
    $2,757.19
    Subtotal:
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