# 1044C Dunbier Coupling Replacement Trigger Kit Clamshell Pack | Marine Trailer Part

🔧 Product Description

  

Dunbier 50mm Coupling Replacement Trigger Kit - Clamshell Pack - Part Number: 1044C

  

A packaged replacement trigger and latch-component kit for selected Dunbier fixed 50mm trailer couplings. It restores the hand-operated release and locking action where the original trigger, spring or retaining hardware has become worn or damaged.

  

⚙️ Key Features

  

• Replacement coupling trigger mechanism

• Retail clamshell package

• Restores positive opening and latching action

• Suitable for compatible Dunbier fixed ball couplings

• Allows repair without replacing a serviceable coupling body

  

📏 Specifications

  

• Application: Selected Dunbier standard and heavy-duty 50mm fixed couplings

• Exact kit contents are those supplied in the current clamshell pack

• Not a complete coupling

  

🔄 Cross Reference & Related Parts

  

• Dunbier: 1044C

• Common application: Dunbier 1010 standard coupling

• Verify compatibility with Dunbier 1000 heavy-duty coupling before installation

• Adjustment bolt sold separately: Dunbier 1011

  

🚤 Trailer Compatibility & Application

  

• Suitable where the coupling socket and body remain structurally sound

• Not suitable for override-coupling brake actuators unless specifically listed

• Compare the original trigger shape, pivot and spring arrangement

  

🔌 Function

  

Controls opening and closing of the coupling socket and positively retains the coupling on the tow ball.

  

Common signs of wear or replacement:

  

• Trigger is cracked, bent or difficult to move

• Coupling does not latch automatically

• Safety catch does not retain the trigger

• Spring is weak, broken or missing

• Pivot hole or retaining hardware is worn

  

🛠️ Installation & Safety

  

• Support the trailer and disconnect it from the vehicle before repair

• Record the original spring and pivot orientation

• Check the coupling body for cracks and excessive socket wear

• Test the repaired coupling on a correct tow ball before road use

• Replace the complete coupling if positive locking cannot be confirmed

  

📦 Condition

  

• Brand new Dunbier Marine Products trailer component

• Supplied as one coupling trigger repair kit

• Supplied in original or equivalent packaging

## Details

- **Price:** 20.25 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 20.25 AUD | In stock |

## Images

- 1044C Dunbier Coupling Replacement Trigger Kit Clamshell Pack | Marine Trailer Part
- 1044C Dunbier Coupling Replacement Trigger Kit Clamshell Pack | Marine Trailer Part
- 1044C Dunbier Coupling Replacement Trigger Kit Clamshell Pack | Marine Trailer Part
- 1044C Dunbier Coupling Replacement Trigger Kit Clamshell Pack | Marine Trailer Part
- 1044C Dunbier Coupling Replacement Trigger Kit Clamshell Pack | Marine Trailer Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/1044c-dunbier-coupling-replacement-trigger-kit-clamshell)
> Updated: 2026-08-03