New Mercury 115 HP 4-CYL 4-Stroke Lower Unit (2001–2003) – New / Re-manufactured image 0
New Mercury 115 HP 4-CYL 4-Stroke Lower Unit (2001–2003) – New / Re-manufactured image 0

Mercury Outboard Lower Unit | 115 HP | 4-Cylinder 4-Stroke (2001–2003)

$2,829.00
$3,132.42
$2,829.00
(-10%)
SKU: ME-G4-06-N
Please hurry! Only 100 left in stock
Subtotal: $2,829.00
New Mercury 115 HP 4-CYL 4-Stroke Lower Unit (2001–2003) – New / Re-manufactured image 0

Mercury Outboard Lower Unit | 115 HP | 4-Cylinder 4-Stroke (2001–2003)

$3,132.42 $2,829.00
New Mercury 115 HP 4-CYL 4-Stroke Lower Unit (2001–2003) – New / Re-manufactured image 0

Mercury Outboard Lower Unit | 115 HP | 4-Cylinder 4-Stroke (2001–2003)

$3,132.42 $2,829.00
Product Type: New Lower Unit
HP/Shaft/Years/Ratio: 115 HP / L Shaft / 2001-2003

    Get your vessel back to peak performance with this Premium Aftermarket Replacement gearcase, purpose-built for the early-generation Mercury 115 HP 4-Stroke. Engineered to handle the specific torque requirements of the 4-cylinder powerhead, this unit provides a heavy-duty alternative to high-priced OEM replacements. Featuring precision-ground gears and a corrosion-resistant finish, it ensures smooth shifting and reliable power delivery for years of dependable service.

    • 4-Stroke Optimized: Tailored to the power curves of the 2001–2003 115 HP 4-cylinder series.

    • Rugged Performance: Built with high-strength alloys to ensure maximum longevity in both fresh and saltwater.

    • Direct Fitment: Precision-machined to OEM standards for a seamless installation without modifications.

     

    • Brand: SEI
    • Part Number: SE90-205-4S
    • Horsepower: 115 HP
    • Engine Type: 4-Cylinder 4-Stroke
    • Year Range: 2001–2003
    • Shaft Lengths: 20" (Long) / 25" (Extra Long)
    • Gear Ratio: OEM Matching
    • Condition: Brand New Aftermarket
    • Engine Type: Mercury 115 HP 4-Cylinder 4-Stroke.
    • Year Range: Specifically for models produced between 2001 and 2003.
    • Shaft Lengths: Supports 20" (L) and 25" (XL) configurations.
    • Rotation: Standard Right Hand (RH) rotation.
    • Year Specific: This unit is strictly for the 2001–2003 4-cylinder 4-stroke models. It will not fit later EFI or standard 2-stroke models.
    • Shaft Verification: Always verify your Shaft Length and Tooth Count (splines) before ordering, as these are the leading causes for returns.
    • Break-in Period: To ensure the longevity of your 3-Year Warranty, follow the standard gearcase break-in procedure and check gear lube levels before the first run.

    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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