# 5342389 Mercury MerCruiser Retaining Ring | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Retaining Ring - Part Number: 53-42389

  

Genuine Quicksilver/Mercury retaining ring used to secure components in compatible Mercury and MerCruiser assemblies. This OEM retaining ring is designed to hold parts in their correct position and prevent movement, dislodging or loss during operation.

  

⚙️ Key Features

  

• Genuine Quicksilver/Mercury OEM retaining ring

• Small precision retaining hardware for Mercury / MerCruiser assemblies

• Helps secure components in place inside the matching parts diagram assembly

• Manufactured to OEM sizing and fitment requirements

• Suitable for service work where 53-42389 is specified

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 53-42389

• 42389

  

OEM / Related Numbers:

  

• 53-42389

• 42389

• 5342389

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury / MerCruiser assemblies where retaining ring 53-42389 is specified

• Component retention points in OEM Mercury parts diagrams

  

Typically suits:

  

• Engine models:

• Mercury outboard applications using retaining ring 53-42389 in the relevant parts diagram

• MerCruiser applications using retaining ring 53-42389 in the relevant parts diagram

• Service assemblies requiring OEM retaining ring 42389

  

• HP Range: Not applicable - application-specific retaining hardware

• Engine Type: Mercury / MerCruiser component retaining hardware

• Year Range: Application dependent by parts diagram and serial number

  

🔌 Function

  

The retaining ring locks a component in place inside the matching assembly. It helps prevent movement, loosening or component separation during vibration and normal marine operation.

  

Common signs of failure:

  

• Missing retaining ring during disassembly

• Component movement or looseness

• Ring distorted or stretched during removal

• Corrosion or loss of spring tension

• Assembly will not retain parts correctly after service

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 4.95 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 4.95 AUD | In stock |

## Images

- 5342389 Mercury MerCruiser Retaining Ring | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/5342389-mercury-mercruiser-retaining-ring-genuine-quicksilver-oem-part)
> Updated: 2026-05-17