# 118M0204653 Mercury MerCruiser Nut | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver MR / Alpha Bell Housing Nut - Part Number: 11-8M0204653

  

A genuine Quicksilver stainless 7/16-20 nylon-insert nut used on MerCruiser MR / Alpha inner transom studs and selected small Mercury propeller hardware applications. This nut replaces multiple earlier Mercury nut references and is commonly used where the transom / bell housing diagram specifies 11-8M0204653.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM nut

• Correct Mercury part number 11-8M0204653

• Thread size: 7/16"-20

• Stainless steel with nylon insert

• Used on MR / Alpha MCM inner transom studs and selected Mercury small outboard prop hardware

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 11-8M0204653 current OEM nut reference

• 11-8M0204653 replaces multiple earlier 7/16-20 nut references where specified

  

OEM / Related Numbers:

  

• 11-8M0204653

• 8M0204653

• 118M0204653

• 11-21298

• 11-22178

• 11-24648

• 11-29241

• 11-33962

• 11-34933

• 11-82671015

• 11-134391

• 11-46355

• 11-859116

• 11-95702

  

Aftermarket / Verified Equivalents:

  

• Fastenal: 51012

• GLM: 21170

• Mallory: 9-72004

• Mallory: 9-72004-10

• Sierra: 18-3721

  

🚤 Compatibility

  

Commonly used on:

  

• MerCruiser MR / Alpha MCM inner transom stud hardware

• Mercury 39 / 60 small outboard prop nut applications where 7/16-20 nut is specified

  

Typically suits:

  

• Drive / engine applications:

• MerCruiser MR transom assembly inner transom stud applications where 11-8M0204653 is specified

• MerCruiser Alpha One Gen I transom assembly inner stud nut applications where 11-8M0204653 is specified

• MerCruiser Alpha / MCM bell housing and inner transom stud applications using 7/16-20 stainless nylon-insert nut

• Mercury 39HP propeller nut applications, 1968 and newer, 8-spline prop shaft where specified

• Mercury 60HP propeller nut applications, 1968 and newer, 8-spline prop shaft where specified

  

• Drive Type: MerCruiser MR / Alpha One Gen I where specified

• Engine Type: Selected Mercury small outboard prop hardware applications where specified

• System Type: Bell housing / inner transom stud nut or small outboard prop nut

• Thread Size: 7/16"-20

  

🔌 Function

  

The nut secures the specified transom stud or propeller hardware location, maintaining correct clamping force and hardware retention.

  

Common signs replacement is needed:

  

• Nylon insert worn or no longer locking

• Corroded or seized nut

• Damaged threads

• Transom service or bell housing removal required

• Propeller hardware replacement required on matching small outboard applications

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 5.1 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 5.10 AUD | In stock |

## Images

- 118M0204653 Mercury MerCruiser Nut | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/118m0204653-mercury-mercruiser-nut-genuine-quicksilver-oem-part)
> Updated: 2026-05-17