# 11863332 Mercury MerCruiser Nut 1/2"-20 | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Rear Engine Mount Nut - Part Number: 11-863332

  

A genuine Quicksilver 1/2-20 aluminium rear engine mount nut used on MerCruiser MCM rear engine mount assemblies. This nylon-insert nut is used where the MerCruiser rear mount bolt / transom plate assembly specifies 11-863332.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM nut

• Correct Mercury part number 11-863332

• Thread size: 1/2"-20

• Aluminium nut with nylon insert

• Used on MCM rear engine mount bolt applications

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 11-863332 current OEM rear engine mount nut reference

• 11-99298 related earlier / crossover rear mount nut reference

  

OEM / Related Numbers:

  

• 11-863332

• 863332

• 11863332

• 11-99298

• 1199298

• MER1199298

  

Aftermarket / Verified Equivalents:

  

• Sierra: 18-3728

• GLM: 19350

  

🚤 Compatibility

  

Commonly used on:

  

• MerCruiser MCM rear engine mount assemblies

• MerCruiser rear engine mount bolt / transom plate mounting locations

  

Typically suits:

  

• Engine / assembly applications:

• MerCruiser MCM rear engine mount assemblies using 1/2-20 rear mount nut 11-863332

• MerCruiser 3.0L / 4-cylinder rear engine mount bolt applications where 11-863332 is specified

• MerCruiser 4.3L V6 rear engine mount bolt applications where 11-863332 is specified

• MerCruiser 5.0L V8 rear engine mount bolt applications where 11-863332 is specified

• MerCruiser 5.7L V8 rear engine mount bolt applications where 11-863332 is specified

• MerCruiser 6.2L V8 rear engine mount bolt applications where 11-863332 is specified

• MerCruiser sterndrive engine rear mount assemblies requiring aluminium 1/2-20 nylon-insert nut 11-863332

  

• Engine Type: MerCruiser MCM petrol sterndrive engines where specified

• System Type: Rear engine mount nut

• Thread Size: 1/2"-20

• Fitment Note: This is a rear engine mount hardware part, so final fitment should be confirmed by engine serial and rear mount diagram location.

  

🔌 Function

  

The nut secures the rear engine mount bolt, helping clamp the engine mount assembly and maintain proper engine alignment in the sterndrive installation.

  

Common signs replacement is needed:

  

• Rear mount nut corroded or damaged

• Nylon insert no longer locking

• Engine mount service or alignment work required

• Threads stripped or seized

• Incorrect non-OEM nut previously fitted

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 12.0 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 12.00 AUD | In stock |

## Images

- 11863332 Mercury MerCruiser Nut 1/2"-20 | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/11863332-mercury-mercruiser-nut-1-2-20-genuine-quicksilver-oem-part)
> Updated: 2026-05-17