MerCruiser Alpha One Gen I complete standard-rotation sterndrive

Alpha One Gen II Transom Assembly

Shop an aftermarket Alpha One Gen II transom assembly for compatible MerCruiser applications. Compare the complete Alpha One Gen II transom plate assembly and verify your existing drive and transom identifiers before ordering.

Alpha One Gen II Transom Assembly

Shop MerCruiser Alpha One Gen II transom assembly parts for Cobra conversion applications. Transom components form the mounting interface between your engine and sterndrive, and must match your specific conversion setup for a proper, leak-free installation.

Find the correct Alpha One Gen II transom application part for your Cobra conversion below.

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  • Transom Assembly | 9F-116 | Mercruiser Alpha One Gen II

    Transom Assembly | 9F-116 | Mercruiser Alpha One Gen II SKU: SE9F-116
    MPN: GEN2-TRANSOM-ASSEMBLY

    $2,065.00
    $2,292.15
    $2,065.00
    Restore structural integrity and smooth power transfer to your drivetrain with this Complete Transom Plate Assembly. Engineered as a premium aftermarket solution for Alpha One Gen II systems, this assembly features integrated Trim Cylinders built to withstand demanding marine environments. The Heavy-Duty Construction protects...
    $2,065.00
    $2,292.15
    $2,065.00

A Clearer Way to Select Your Replacement Drive

Compare the configuration details that matter before choosing a sterndrive.

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How to Verify Alpha One Gen II Transom Fitment

Correct Alpha One Gen II transom assembly fitment starts with identifying the existing sterndrive system. First confirm that the installation is Alpha One Gen II rather than Alpha One Gen I, MR, Bravo or another MerCruiser drive family.

Next, compare the identification information from your existing installation with the replacement product listing. Model year can help narrow the application, but serial information and existing part references provide a stronger basis for selecting a MerCruiser transom assembly replacement.

Check These Details Before Ordering

  • Record the engine serial number
  • Record the transom serial number, when available
  • Check the existing transom assembly or OE part number
  • Confirm whether the transom assembly has been replaced previously
  • Check for modifications to the original sterndrive installation
  • Compare all identifiers with the selected replacement listing
  • Request fitment assistance if any information conflicts

Alpha One Gen II Transom Assembly Reference

Use this Alpha One Gen II transom assembly reference to compare the current replacement configuration with the identifiers from your existing installation. Part numbers should be used as a selection reference rather than as the only proof of fitment.

Reference Alpha One Gen II Transom Assembly / Application Reference
Drive Family Alpha One Gen II ā€” Confirm the existing sterndrive generation before ordering
Replacement Part Number 9F-116 ā€” Match the selected replacement listing with the existing installation information
OE Cross-Reference MerCruiser 6-6111002LP ā€” Compare against the existing transom assembly or OE part information
Assembly Type Complete transom plate assembly ā€” Confirm that your repair requires the complete assembly rather than an individual component
Included Major Component Trim cylinders ā€” Confirm any additional installation parts or service components required separately
Application Alpha One Gen II applications ā€” Verify the drive generation, serial information and existing part references before purchase

Do You Need a Complete Transom Assembly?

A complete Alpha One Gen II transom assembly is different from an individual transom service part or a complete sterndrive. Identify which part of the installation actually requires replacement before ordering.

Complete Transom Assembly

  • The complete transom-side assembly requires replacement
  • Multiple transom assembly components are being replaced together
  • Your application specifically calls for a complete transom assembly replacement
  • You have confirmed that an individual service part will not solve the repair
  • The selected replacement matches your Alpha One Gen II application

Individual Transom Components

  • Only one specific service component has failed
  • The bellows requires replacement
  • The gimbal bearing requires replacement
  • A seal, hose or related service component needs attention
  • The existing complete transom assembly does not require replacement
  • The failed component has been positively identified before ordering

Complete Alpha One Gen II Sterndrive

  • The problem is located in the removable outdrive
  • The upper unit requires replacement
  • The lower unit requires replacement
  • Both upper and lower drive sections need replacement
  • The transom-side assembly itself is not the failed component
  • You need a complete Alpha One Gen II sterndrive rather than a transom assembly
An informational comparison graphic titled 'STANDARD VS COUNTER ROTATION' showing two outboard motors and two propellers, with text explaining the difference in propeller direction when viewed from behind. The background is a real marina scene with water and boats, but the image functions as an explanatory diagram rather than a straightforward product photo.

Alpha One Gen I vs Gen II Transom Assemblies

Alpha One Gen I and Alpha One Gen II transom assemblies belong to different MerCruiser drive generations and should not be selected from appearance alone. Confirm the existing drive family, serial information and current transom identifiers before choosing a replacement assembly.

Alpha One Gen I Transom Assembly

An Alpha One Gen I transom assembly is used with earlier Alpha One and related MerCruiser applications. If your existing installation is Gen I, use the appropriate Gen I replacement path rather than assuming a Gen II transom assembly will interchange.

Alpha One Gen II Transom Assembly

Choose an Alpha One Gen II transom assembly only when the existing installation is confirmed as Gen II. The current 9F-116 replacement in this collection is listed as a complete Alpha One Gen II transom plate assembly with trim cylinders.

Shop Related Alpha One Gen II Assemblies

The transom assembly is only one part of an Alpha One Gen II sterndrive installation. If the required replacement is located in the removable drive rather than the transom-side system, use the related collections below to compare complete sterndrives, Alpha One Gen II upper units and Alpha One Gen II lower units.

Start with the assembly that has actually failed, then verify the drive family and product-specific application before ordering your MerCruiser replacement.

  1. Alpha One Gen II Complete Sterndrives

    Shop complete Alpha One Gen II outdrive assemblies when both the upper and lower drive sections require replacement.

    Shop Complete Sterndrives

  2. Alpha One Gen II Upper Units

    Compare replacement Alpha One Gen II upper-drive assemblies when the required repair is limited to the upper section.

    Shop Upper Units

  3. Alpha One Gen II Lower Units

    Browse Alpha One Gen II lower-unit replacements and verify ratio, rotation and product-specific application before ordering.

    Shop Lower Units

  4. MerCruiser Sterndrives & Outdrives

    Return to the main MerCruiser collection when you need to compare Alpha One Gen I, Alpha One Gen II, Bravo or different assembly types.

    Shop MerCruiser

MerCruiser Alpha One Gen II Transom Assembly Replacement

A MerCruiser Alpha One Gen II transom assembly forms the transom-side mounting interface for the sterndrive system. While researching replacements, buyers may also encounter terms such as transom plate assembly and gimbal housing assembly, but the exact components included can vary by replacement part number.

This collection focuses on a complete aftermarket Alpha One Gen 2 transom assembly replacement path for supported MerCruiser applications. The current configuration includes trim cylinders and allows buyers to compare a complete transom assembly instead of shopping individual service components separately.

Before choosing an Alpha 1 Gen 2 transom assembly, verify the existing drive generation, engine or transom serial information and current part number where available. Similar-looking MerCruiser components can belong to different applications, so verified installation information should take priority over appearance alone.

What Customers Say

Perfect complete transom replacement for 1999 Mercruiser

My original transom assembly was heavily corroded and leaking. This complete Alpha One Gen II transom kit came with everything pre-installed, including the gimbal bearing, U-joint bellows, and trim cylinders. It bolted right up to my 5.0L block and sealed perfectly against the hull.
Nathaniel Foster Verified buyer
August 2026

High-quality gimbal housing and components

The fit and finish on this replacement transom assembly is fantastic. The shift cable operates smoothly, and the bellows are made of thick, durable marine-grade rubber. It completely solved the water leak issue I was having with my 2004 4.3L setup.
Samuel Jenkins Verified buyer
July 2026

Everything needed for a full rebuild

I bought this to replace a cracked gimbal ring on my 2001 Alpha Gen 2. Having the new trim cylinders, hydraulic hoses, and trim limit senders already mounted saved me hours of frustration. Mariners Warehouse provided excellent fitment advice before shipping.
Oliver Grant Verified buyer
June 2026

Fixed my sloppy steering issues completely

The steering lever and swivel shaft on my old transom were completely worn out. Dropping in this complete Gen II transom application tightened up the steering perfectly on my 5.7L bowrider. Shipped quickly and arrived in a heavy-duty crate.
William Davies Verified buyer
May 2026

Exact match for 1995 standard Alpha Gen II

Mated this new transom assembly to my existing inner transom plate and engine without any modifications. The engine alignment tool slid straight in, proving the gimbal bearing was set perfectly from the factory. Excellent value compared to rebuilding piece by piece.
Thomas Wright Verified buyer
April 2026

Excellent packaging and ready to install

I was worried about shipping a heavy transom unit, but it was strapped securely to a mini pallet with heavy foam protection. It included the necessary mounting hardware, fresh zinc anodes, and the exhaust bellows are top-notch. Very satisfied with this purchase.
David Mitchell Verified buyer
March 2026

Trim system works flawlessly

Replaced my 1997 Mercruiser transom that had blown trim lines and a seized swivel pin. The new trim pump connections lined up perfectly, and the outdrive trims up and down smoother than it has in years. Great product and great support.
Christopher Evans Verified buyer
February 2026

Saved my 2006 cruiser from the scrap yard

A local marine mechanic quoted me a fortune to rebuild my leaking transom assembly. Buying this complete Alpha Gen II transom replacement from Mariners Warehouse was much more cost-effective. Verifying my serial number ensured an exact fit.
Jonathan Reed Verified buyer
January 2026

Helpful Guides

Use these guides to identify your MerCruiser drive, understand gear-ratio selection and decide whether you need a complete sterndrive, upper unit or lower unit.

Alpha One Gen II transom assembly components arranged for fitment identification in a marine workshop

Alpha One Gen II Transom Assembly Fitment Guide

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Complete marine transom assembly beside an individual gimbal housing for component comparison

Transom Assembly vs Gimbal Housing: What Do You Need?

MerCruiser Component Comparison Transom Assembly vs Gimbal Housing: What Do You Need? Transom assembly, transom plate and gimbal housing are...

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Alpha One Gen I and Gen II style transom assemblies displayed side by side for identification

Alpha One Gen I vs Gen II Transom Assemblies

Alpha One Generation Comparison Alpha One Gen I vs Gen II Transom Assemblies Alpha One generations should be identified before...

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Frequently Asked Questions

What is an Alpha One Gen II transom assembly?

An Alpha One Gen II transom assembly is the transom-side assembly used in a compatible MerCruiser Alpha One Gen II sterndrive installation. It provides the mounting interface between the boat and sterndrive system, with the exact included components determined by the selected assembly.

What is the 9F-116 Alpha One Gen II transom assembly?

The 9F-116 transom assembly is an aftermarket complete transom plate assembly listed for supported Alpha One Gen II applications. The current replacement configuration includes trim cylinders and references MerCruiser part number 6-6111002LP.

Does 9F-116 replace MerCruiser 6-6111002LP?

The supplier lists the 9F-116 as a replacement for MerCruiser 6-6111002LP . Buyers should still verify their existing Alpha One Gen II installation, serial information and current part references before ordering.

Does the 9F-116 fit every Alpha One Gen II installation?

Do not assume that every Alpha One Gen II installation accepts the same replacement solely from the drive-family name. Confirm the drive generation, existing part information and available engine or transom serial details before finalizing Alpha One Gen II transom assembly fitment .

What is included with the 9F-116 transom assembly?

The current supplier information describes the 9F-116 transom assembly as a complete transom plate assembly with trim cylinders. Check the product listing and installation requirements separately for any additional hardware or service components that may be required.

Is a transom assembly the same as a gimbal housing assembly?

The terms transom assembly , transom plate assembly and gimbal housing assembly can appear closely related while shopping, but they should not automatically be treated as identical product packages. Verify the exact components included with the replacement part you are considering.

Can I identify the correct Alpha One Gen II transom assembly by model year?

Model year can help narrow the application, but it should not be the only factor used to choose an Alpha One Gen II transom assembly . Drive generation, serial information and existing part references should also be checked whenever available.

Will an Alpha One Gen II transom assembly fit Alpha One Gen I?

Do not interchange Alpha One Gen I and Gen II transom assemblies based on appearance alone. Confirm the existing drive generation and use the selected replacement product's application information before ordering.

Do I need a complete transom assembly if only one component has failed?

Not necessarily. If the repair is limited to a confirmed individual bellows, bearing, seal, hose or another service component, replacing the complete transom assembly may not be required. Identify the failed component before selecting the replacement path.

What information should I provide to check MerCruiser transom assembly fitment?

For a MerCruiser Alpha One Gen II transom assembly fitment check, provide the engine serial number, transom serial number when available, existing drive family and current part number. Clear photos of identification labels can also help when the installation history is uncertain.

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