New Mercury 40–60 HP 4-Cylinder Bigfoot 4-Stroke Outboard Lower Unit (2001–2024) – New / Re-manufactured image 0
New Mercury 40–60 HP 4-Cylinder Bigfoot 4-Stroke Outboard Lower Unit (2001–2024) – New / Re-manufactured image 0

Mercury Bigfoot Lower Unit | 40–60 HP | 4-Cylinder 4-Stroke

$2,822.00
$3,132.42
$2,822.00
(-10%)
SKU: ME-G3-05A-N
Please hurry! Only 100 left in stock
Subtotal: $2,822.00
New Mercury 40–60 HP 4-Cylinder Bigfoot 4-Stroke Outboard Lower Unit (2001–2024) – New / Re-manufactured image 0

Mercury Bigfoot Lower Unit | 40–60 HP | 4-Cylinder 4-Stroke

$3,132.42 $2,822.00
New Mercury 40–60 HP 4-Cylinder Bigfoot 4-Stroke Outboard Lower Unit (2001–2024) – New / Re-manufactured image 0

Mercury Bigfoot Lower Unit | 40–60 HP | 4-Cylinder 4-Stroke

$3,132.42 $2,822.00
Product Type: New Lower Unit
HP/Shaft/Years/Ratio: 40-60 HP BIGFOOT 4-STROKE / L Shaft / 2001-2007

    Restore the heavy-thrust performance of your vessel with this Premium Aftermarket Replacement gearcase specifically engineered for Mercury Bigfoot (Command Thrust) models. Unlike standard gearcases, this heavy-duty unit features a larger housing and oversized internal gears designed to provide the massive torque required for pontoons, workboats, and heavy displacement hulls.

    • High-Thrust Torque: Engineered to swing larger propellers for superior control and maneuverability.

    • Commercial Grade Durability: Built to withstand the constant load of heavy vessels in both salt and freshwater.

    • Smooth Operation: Precision-matched gear sets ensure quiet shifting and efficient power delivery.

     

    • Brand: SEI
    • Part Number: SE90-205-BF
    • Horsepower Range: 40 HP, 50 HP, 60 HP
    • Engine Type: 4-Cylinder 4-Stroke (Bigfoot)
    • Year Range: 2001–2024
    • Shaft Lengths: 20" (L) / 25" (XL)
    • Gearcase Type: Bigfoot / High Thrust
    • Condition: Brand New Aftermarket
    • Engine Type: Mercury 40 HP, 50 HP, and 60 HP 4-Cylinder 4-Stroke models.
    • Model Designation: Fits Bigfoot (Command Thrust) models only.
    • Year Range: Compatible with models from 2001 to 2024.
    • Shaft Lengths: Available in 20" (L) and 25" (XL) configurations.
    • Not for Standard Models: This unit will NOT fit standard 40–60 HP Mercury models. It is strictly for the Bigfoot/High-Thrust series with the larger gearcase diameter.
    • Propeller Fitment: Due to the larger gearcase size, this unit requires a Bigfoot-style propeller; standard small-diameter props will not fit.
    • Spline Count Check: Always verify your vertical driveshaft spline count before installation to ensure a perfect powerhead match.

    Mariners Warehouse vs Others

    Built to match OEM standards while delivering reliable performance and peace of mind.

    Features

    Mariners Warehouse

    Others
    Performance ✔️ ❌
    Warranty Support Reliable warranty Limited or unclear warranty terms
    Customer Trust Trusted by thousands of marine customers Unverified buyer trust
    Pre-tested before shipping for reliability ✔️ ❌
    OEM performance standards ✔️ ❌
    Simple return process ✔️ ❌

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