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
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Mercury Gear Case 8/9.9 4S SHORT OEM 8M0229974
Mercury
MSRP: $964.49$819.82Genuine Mercury Gear Case 8/9.9 4S SHORT, part number 8M0229974. Designed for use with compatible applications.8M0229974- SKU:
- 8M0229974
- Availability:
- Usually Ships within 24hours
- Weight:
- 240.00 Ounces
MSRP: $964.49$819.82 -
Mercury Gear Case 8/9.9 4S LONG OEM 8M0158633
Mercury
MSRP: $964.30$819.66Genuine Mercury Gear Case 8/9.9 4S LONG, part number 8M0158633. Designed for use with compatible applications.8M0158633- SKU:
- 8M0158633
- Availability:
- Usually Ships within 24hours
- Weight:
- 240.00 Ounces
MSRP: $964.30$819.66 -
Mercury Gear Case 8/9.9 4S SHORT OEM 8M0158631
Mercury
MSRP: $964.30$819.66Genuine Mercury Gear Case 8/9.9 4S SHORT, part number 8M0158631. Designed for use with compatible applications.8M0158631- SKU:
- 8M0158631
- Availability:
- Usually Ships within 24hours
- Weight:
- 240.00 Ounces
MSRP: $964.30$819.66 -
Mercury Gear Case 8/9.9 4S LG OEM 8M0070884
Mercury
MSRP: $964.30$819.66Genuine Mercury Gear Case 8/9.9 4S LG, part number 8M0070884. Designed for use with compatible applications.8M0070884- SKU:
- 8M0070884
- Availability:
- Usually Ships within 24hours
- Weight:
- 320.00 Ounces
MSRP: $964.30$819.66 -
Mercury Gear Case BASIC 25 2S OEM 8M0083538
Mercury
MSRP: $922.49$784.12Genuine Mercury Gear Case BASIC 25 2S, part number 8M0083538. Designed for use with compatible applications.8M0083538- SKU:
- 8M0083538
- Availability:
- Usually Ships within 24hours
- Weight:
- 224.00 Ounces
MSRP: $922.49$784.12 -
Quicksilver Forward Gear Set Assy (Bravo One & Bravo One X) 14063A1
Quicksilver
MSRP: $899.99$764.99The Quicksilver Forward Gear Set 14063A1 is a genuine Quicksilver OEM replacement gear set designed for MerCruiser Bravo One and Bravo One X sterndrives. Manufactured to original equipment specifications, this gear set is heat treated and precision...14063A1- SKU:
- 14063A1
- Availability:
- Usually Ships within 24hours
- Weight:
- 64.43 Ounces
MSRP: $899.99$764.99 -
Mercury DRIVESHAFT ASSY OEM 888434A1
Mercury
MSRP: $896.49$762.02Genuine Mercury DRIVESHAFT ASSY, part number 888434A1. Designed for use with compatible applications.888434A1- SKU:
- 888434A1
- Availability:
- Usually Ships within 24hours
- Weight:
- 116.80 Ounces
MSRP: $896.49$762.02 -
Mercury Gear Case GENII CR-BASIC OEM 815822A28
Mercury
MSRP: $892.86$758.93Genuine Mercury Gear Case GENII CR-BASIC, part number 815822A28. Designed for use with compatible applications.815822A28- SKU:
- 815822A28
- Availability:
- Usually Ships within 24hours
- Weight:
- 395.20 Ounces
MSRP: $892.86$758.93 -
Mercury DRIVESHAFT ASSY OEM 858517A3
Mercury
MSRP: $792.99$674.04Genuine Mercury DRIVESHAFT ASSY, part number 858517A3. Designed for use with compatible applications.858517A3- SKU:
- 858517A3
- Availability:
- Usually Ships within 24hours
- Weight:
- 100.00 Ounces
MSRP: $792.99$674.04 -
Mercury Gear Case BASIC9.9/15 4S OEM 8M0083312
Mercury
MSRP: $770.49$654.92Genuine Mercury Gear Case BASIC9.9/15 4S, part number 8M0083312. Designed for use with compatible applications.8M0083312- SKU:
- 8M0083312
- Availability:
- Usually Ships within 24hours
- Weight:
- 120.00 Ounces
MSRP: $770.49$654.92 -
Mercury Gear Case BASIC 25/30 4S OEM 8M0057242
Mercury
MSRP: $740.49$629.42Genuine Mercury Gear Case BASIC 25/30 4S, part number 8M0057242. Designed for use with compatible applications.8M0057242- SKU:
- 8M0057242
- Availability:
- Usually Ships within 24hours
- Weight:
- 145.60 Ounces
MSRP: $740.49$629.42 -
Mercury Gear Case 40 2S SH INTL OEM 8M0127363
Mercury
MSRP: $735.70$625.35Genuine Mercury Gear Case 40 2S SH INTL, part number 8M0127363. Designed for use with compatible applications.8M0127363- SKU:
- 8M0127363
- Availability:
- Usually Ships within 24hours
- Weight:
- 496.00 Ounces
MSRP: $735.70$625.35 -
Mercury BASIC GEARCASE OEM 8M0135572
Mercury
MSRP: $726.99$617.94Genuine Mercury BASIC GEARCASE, part number 8M0135572. Designed for use with compatible applications.8M0135572- SKU:
- 8M0135572
- Availability:
- Usually Ships within 24hours
- Weight:
- 144.38 Ounces
MSRP: $726.99$617.94 -
Mercury COVER-GEARCASE OEM 8M0177487
Mercury
MSRP: $699.49$594.57Genuine Mercury COVER-GEARCASE, part number 8M0177487. Designed for use with compatible applications.8M0177487- SKU:
- 8M0177487
- Availability:
- Usually Ships within 24hours
- Weight:
- 208.96 Ounces
MSRP: $699.49$594.57 -
Mercury LOWER UNIT ASSY OEM M899360T
Mercury
MSRP: $579.69$492.74Genuine Mercury LOWER UNIT ASSY, part number M899360T. Designed for use with compatible applications.M899360T- SKU:
- M899360T
- Availability:
- Usually Ships within 24hours
- Weight:
- 215.52 Ounces
MSRP: $579.69$492.74 -
Mercury Gear Case BASIC 15/20 4S OEM 8M0070875
Mercury
MSRP: $566.99$481.94Genuine Mercury Gear Case BASIC 15/20 4S, part number 8M0070875. Designed for use with compatible applications.8M0070875- SKU:
- 8M0070875
- Availability:
- Usually Ships within 24hours
- Weight:
- 158.40 Ounces
MSRP: $566.99$481.94 -
Mercury Gear Case 5HP PROPN B L OEM 8M0188426
Mercury
MSRP: $564.49$479.82Genuine Mercury Gear Case 5HP PROPN B L, part number 8M0188426. Designed for use with compatible applications.8M0188426- SKU:
- 8M0188426
- Availability:
- Usually Ships within 24hours
- Weight:
- 176.00 Ounces
MSRP: $564.49$479.82 -
Mercury GEAR HOUSING B XL OEM 8M0155388
Mercury
MSRP: $564.49$479.82Genuine Mercury GEAR HOUSING B XL, part number 8M0155388. Designed for use with compatible applications.8M0155388- SKU:
- 8M0155388
- Availability:
- Usually Ships within 24hours
- Weight:
- 208.00 Ounces
MSRP: $564.49$479.82 -
Mercury Gear Case 4-5-6 4S B S OEM 8M0188408
Mercury
MSRP: $564.30$479.66Genuine Mercury Gear Case 4-5-6 4S B S, part number 8M0188408. Designed for use with compatible applications.8M0188408- SKU:
- 8M0188408
- Availability:
- Usually Ships within 24hours
- Weight:
- 0.00 Ounces
MSRP: $564.30$479.66 -
Mercury Gear Case 4-5 2S B L OEM 8M0188402
Mercury
MSRP: $564.30$479.66Genuine Mercury Gear Case 4-5 2S B L, part number 8M0188402. Designed for use with compatible applications.8M0188402- SKU:
- 8M0188402
- Availability:
- Usually Ships within 24hours
- Weight:
- 224.00 Ounces
MSRP: $564.30$479.66
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