Yamaha F225-F300 4.2L V6 Counter-Rotation Lower Unit | 90-430 | 25" 30" Shaft
Yamaha F225-F300 4.2L V6 Counter-Rotation Lower Unit | 90-430 | 25" 30" Shaft
Yamaha F225-F300 4.2L V6 Counter-Rotation Lower Unit | 90-430 | 25" 30" Shaft
Yamaha F225-F300 4.2L V6 Counter-Rotation Lower Unit | 90-430 | 25" 30" Shaft

Yamaha F225-F300 4.2L V6 Counter-Rotation Lower Unit | 90-430 | 25" 30" Shaft

$1,865.00
$2,095.00
$1,865.00
(-11%)
SKU: SE90-430-A25F
Please hurry! Only 200 left in stock
Subtotal: $1,865.00
Yamaha F225-F300 4.2L V6 Counter-Rotation Lower Unit | 90-430 | 25" 30" Shaft

Yamaha F225-F300 4.2L V6 Counter-Rotation Lower Unit | 90-430 | 25" 30" Shaft

$2,095.00 $1,865.00
Yamaha F225-F300 4.2L V6 Counter-Rotation Lower Unit | 90-430 | 25" 30" Shaft
Yamaha F225-F300 4.2L V6 Counter-Rotation Lower Unit | 90-430 | 25" 30" Shaft
Yamaha F225-F300 4.2L V6 Counter-Rotation Lower Unit | 90-430 | 25" 30" Shaft
Yamaha F225-F300 4.2L V6 Counter-Rotation Lower Unit | 90-430 | 25" 30" Shaft

Yamaha F225-F300 4.2L V6 Counter-Rotation Lower Unit | 90-430 | 25" 30" Shaft

$2,095.00 $1,865.00
Motor and Shaft: 4.2L / 25" / 4 Stroke

    Perfect your twin-engine alignment with this Premium Aftermarket Replacement counter-rotation gearcase, specifically engineered for the high-torque demands of Yamaha 4.2L V6 engines. Designed to eliminate the high cost of OEM replacements, this unit provides heavy-duty performance for offshore and high-horsepower applications.

    • High-Output Cooling: Features dual and side water intakes and a water-cooled bearing carrier to maintain optimal temperatures during long runs.

    • Saltwater Protection: Built with corrosion-resistant materials and finished in a durable, paintable black coating to match your factory engine.

    • Zero-Hassle Install: Arrives as a complete, factory-assembled unit, pre-filled with premium gear lube and pressure-tested for immediate use.

    • Brand: SEI
    • Part Number: 90-430
    • Engine Compatibility: Yamaha F225-F300 (4.2L V6)
    • Horsepower Range: 225 - 300 HP
    • Gear Ratio: 1.75:1
    • Rotation: Counter / Left-Hand
    • Water Intake: Dual & Side (High-Efficiency)
    • Finish: Black (Repaintable)
    • Warranty: 3-Year Fault-Free Warranty
    • Engine Type: Yamaha 4-Stroke F225, F250, & F300 V6 (4.2L Models)
    • Rotation: Counter-Rotation (Left-Hand)
    • Gear Ratio: 1.75:1 (Matches OEM Specs)
    • Shaft Lengths: 25" (XL) and 30" (XXL)
    • Port-Side Application: This is a Counter-Rotation (Left-Hand) unit. It is intended for the port side of a twin-engine setup and will NOT work for standard single-engine configurations.
    • Displacement Match: Only compatible with the 4.2L V6 series. Please verify your engine displacement before purchasing.

    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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