SE106 Alpha One Gen I Sterndrive Replacement for Mercruiser 165-205 HP (1976-1990) with New Style Input Yoke

### SE106 1.81 Complete Sterndrive ? Replaces Mercruiser Alpha One

Category: Mercruiser Sterndrive Parts > Alpha One Gen I Sterndrives 1972-1990 > Alpha One Gen I Sterndrive Parts

Elevate your boating experience with the **SE106 1.81 Complete Sterndrive**, a high-quality replacement for Mercruiser’s iconic Alpha One sterndrives, specifically designed to enhance performance and reliability for engines ranging from 165 to 300 HP manufactured between 1976 and 1990. This premium aftermarket part is engineered for compatibility with V6 engines and the robust 3.7L inline four-cylinder engine, ensuring seamless integration into your existing marine setup.

#### Key Features:

– **Versatile Compatibility:** The SE106 sterndrive replaces most Mercruiser models including the popular R/MR/Alpha One series (1983-1990), as well as specific models such as the Sterndrive 470 (1983-1989) and the Sterndrive 485 (1983-1989). It?s an ideal choice for owners of vessels powered by both inline four-cylinder and V6 configurations.

– **Durable Construction:** Built to withstand harsh marine environments, this sterndrive features a new style input yoke measuring at an impressive length of *9-9/16 inches*. Its robust design ensures longevity while maintaining top-tier performance on the water.

– **Easy Installation:** Although this unit does not include a complete install kit or anode kit, it ships in two boxes for easy handling during installation. For comprehensive installation needs, please refer to our related items section below.

#### Specifications:

– Suitable for up to **300 HP** applications; note that SEI does not warranty usage over this horsepower limit.

– Engine Liter Applications: Typically used with *3.7L inline four* cylinder engines and *4.3L V6* configurations prevalent from *1983 through 1990*.

– Common Cubic Inch Applications: Compatible with various cubic inch ratings including *224 CI*, *262 CI*, among others spanning horsepower outputs of *165,170,175,* up to *205 HP*.

Whether you?re looking to replace a worn-out component or upgrade your current setup, the SE106 offers exceptional value combined with industry-leading quality assurance backed by one of the best warranties available today.

Upgrade your vessel’s performance today! Click [here](#) for application assistance or explore our range of related products tailored specifically for enhancing your boating experience!

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Brand Name: SEI Marine
OEM Part Number: 1811017
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