Volvo Penta SX-D Outdrive Unit (2.18 Gear Ratio)

Restore smooth handling and dependable performance to your boat with the genuine Volvo Penta SX-D Sterndrive. Designed as a rugged, high-performance single-propeller unit, the SX series is celebrated for its low hydrodynamic drag, efficient fuel consumption, and exceptional durability in everyday boating conditions.

This brand-new factory OEM unit is the perfect solution for swap-outs and major overhauls, matching exact engineering standards to get your vessel back on the water with full power and confidence.

Key Features & Specifications

• Model / Series: SX-D (Single Propeller)

• Gear Ratio: 2.18

• Part Number: #22491351

• Interchange / Compatibility: Directly replaces legacy part number #3883605

• Drive Type: Aquamatic Single Prop (SX) – Features an oversized hydrodynamic design for maximum thrust and crisp, predictable tracking.

Why Choose the Volvo Penta SX Series?

• Efficient Lower Unit Profile: The shape of the SX lower housing is precision-engineered to reduce drag and underwater friction, directly improving top-speed efficiency and fuel economy.

• Robust Internal Gearing: Built with heavy-duty cone clutches and spiral bevel gears, ensuring silent, ultra-smooth shifting and maximum power transfer under load.

• Simplified Maintenance: Engineered with easily accessible service points, high-strength aluminum construction, and factory-applied multi-layer anti-corrosion paint.

• Guaranteed OEM Fitment: This is a genuine Volvo Penta factory replacement, ensuring all internal splines, bolt patterns, and hydraulic connections align perfectly with your existing transom shield setup.

Note on Compatibility: This unit is a direct factory replacement for part number 3883605. Please verify your engine model and required gear ratio prior to purchasing. Propeller, installation hardware, and anodized sacrificial anodes are sold separately.