New Mercury 200–400 HP VERADO Counter Rotation Outboard Lower Unit (2006–2021) – 1.85 / 1.75 HD Gear Ratio – New/Remanufactured image 0
New Mercury 200–400 HP VERADO Counter Rotation Outboard Lower Unit (2006–2021) – 1.85 / 1.75 HD Gear Ratio – New/Remanufactured image 0

Mercury Verado HD Counter Rotation Lower Unit | 200–400 HP

$7,349.00
$8,157.39
$7,349.00
(-10%)
Please hurry! Only 100 left in stock
Subtotal: $7,349.00
New Mercury 200–400 HP VERADO Counter Rotation Outboard Lower Unit (2006–2021) – 1.85 / 1.75 HD Gear Ratio – New/Remanufactured image 0

Mercury Verado HD Counter Rotation Lower Unit | 200–400 HP

$8,157.39 $7,349.00
New Mercury 200–400 HP VERADO Counter Rotation Outboard Lower Unit (2006–2021) – 1.85 / 1.75 HD Gear Ratio – New/Remanufactured image 0

Mercury Verado HD Counter Rotation Lower Unit | 200–400 HP

$8,157.39 $7,349.00
Product Type: New Lower Unit
HP/Shaft/Years/Ratio: 200-300 1.85 HD C/R / XL Shaft 2006-2021

    Sync your twin or multi-engine offshore setup with this Premium Aftermarket Replacement Counter Rotation (LH) gearcase. Engineered specifically for the high-output Mercury 2.6L Inline-6 Verado, this unit features the massive 5.44″ Heavy-Duty torpedo and a reinforced propshaft to handle the extreme torque of supercharged 200HP to 400HP powerheads. Designed for precision handling and balanced thrust, it ensures your vessel tracks straight and shifts smoothly, even under the heavy loads of offshore fishing and high-speed cruising.

    • Twin-Engine Precision: Dedicated Left-Hand (LH) rotation to eliminate steering torque in dual-engine configurations.

    • Heavy-Duty 5.44″ Housing: The oversized "Fat" torpedo design provides superior gear strength and enhanced cooling.

    • Offshore Performance: Optimized for the high-torque power curves of L6 Verado 200–400 HP engines.

     

    • Brand: SEI
    • Part Number: SE90-221-HD-CR
    • Engine Displacement: 2.6 Liter Inline-6 (Supercharged)
    • Horsepower Range: 200 HP – 400 HP
    • Gearcase Type: 5.44″ Heavy-Duty (HD)
    • Rotation: Counter Rotation (LH)
    • Condition: Brand New Aftermarket
    • Engine Type: Mercury Verado 200, 225, 250, 275, 300, 350, and 400 HP (6-Cylinder).
    • Year Range: 2006 – 2021.
    • Rotation: Counter Rotation (Left Hand) only.
    • Shaft Lengths: Available in 20" (L), 25" (XL), and 30" (XXL).
    • Gear Ratios: Available in 1.75:1 HD and 1.85:1 HD.
    • Port Side Engine: This unit is typically used on the left (port) side engine of a twin-engine boat. For the standard right-hand rotation, please see our standard HD model.
    • Housing Size: This is the 5.44″ HD gearcase. It is NOT a direct replacement for the standard 4.8″ torpedo without prop and mounting adjustments.
    • Ratio Match: You MUST match your existing OEM gear ratio (1.75 or 1.85) to maintain engine synchronization and propeller efficiency.
    • Hardware Note: Installation hardware, anodes, and propeller nut are not included. Please reuse your high-performance hardware or purchase a new kit.

    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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