New Mercury 110–125 HP L4 & 70–90 HP 3-Cylinder Outboard Lower Units – 3-Jaw / 6-Jaw – New & Remanufactured image 0
New Mercury 110–125 HP L4 & 70–90 HP 3-Cylinder Outboard Lower Units – 3-Jaw / 6-Jaw – New & Remanufactured image 0

Mercury Outboard Lower Unit | 70-125 HP | 3-Jaw & 6-Jaw Clutch

$2,829.00
$3,140.19
$2,829.00
(-10%)
SKU: ME-G3-06-N
Please hurry! Only 100 left in stock
Subtotal: $2,829.00
New Mercury 110–125 HP L4 & 70–90 HP 3-Cylinder Outboard Lower Units – 3-Jaw / 6-Jaw – New & Remanufactured image 0

Mercury Outboard Lower Unit | 70-125 HP | 3-Jaw & 6-Jaw Clutch

$3,140.19 $2,829.00
New Mercury 110–125 HP L4 & 70–90 HP 3-Cylinder Outboard Lower Units – 3-Jaw / 6-Jaw – New & Remanufactured image 0

Mercury Outboard Lower Unit | 70-125 HP | 3-Jaw & 6-Jaw Clutch

$3,140.19 $2,829.00
Product Type: New Lower Unit
HP/Shaft/Years/Ratio: 70-90 HP 3-JAW / L Shaft / 1987-1997

    Get back on the water with confidence using this Premium Aftermarket Replacement gearcase, designed for a wide range of Mercury 3-cylinder and 4-cylinder outboards. Engineered to handle the torque of both 70–90 HP and 110–125 HP engines, this unit is built for heavy-duty durability and precision gear engagement. Whether you're navigating coastal flats or running river rapids, this assembly provides the smooth shifting and reliable thrust required for peak marine performance.

    • Multi-Engine Support: Optimized for the specific power curves of 3-Cylinder and L4 engine configurations.

    • Corrosion Resistant: High-grade marine finish ensures maximum longevity in both salt and freshwater.

    • Reliable Power Transfer: Built to OEM standards to ensure a seamless fit and dependable operation under load.

     

    • Brand: SEI
    • Part Number: SE90-205
    • Engine Type: 3-Cylinder & 4-Cylinder (L4) 2-Stroke
    • Horsepower Range: 70 HP – 125 HP
    • Year Range: 1987–2010 (Varies by engine type)
    • Gear Ratios: OEM Matching
    • Shaft Lengths: 20" (Long) / 25" (Extra Long)
    • Condition: Brand New Aftermarket
    • 3-Cylinder Models: Mercury 70, 75, 80, and 90 HP (1987–2010).
    • 4-Cylinder L4 Models: Mercury 100, 115, and 125 HP (1988–2006).
    • Clutch Options:
    • 3-Jaw Clutch: Fits older models (typically 1987–1997).
    • 6-Jaw Clutch: Fits newer models (typically 1998–2010).
    • Shaft Lengths: Available in 20" (L) and 25" (XL) configurations.
    • Clutch Identification: You MUST verify if your current unit uses a 3-jaw or 6-jaw clutch. These are not interchangeable without a midsection shift shaft update.
    • Shaft Length & Splines: Always confirm your Shaft Length and Tooth Count before ordering to ensure a perfect powerhead match.
    • Plastic Water Pump Housing: Not compatible with models originally equipped with plastic water pump housings without further modification.

    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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