# 2380B Dunbier H3703B Mackay Black Plastic Guard 13" Without Flap | Marine Trailer Part

🔧 Product Description

  

Dunbier Black UV-Stabilised Plastic Mudguard 13" - Without Flap - Part Number: 2380B

  

A moulded black plastic mudguard for Dunbier trailers using 13" wheels. The corrosion-free guard shields the boat and following traffic from water, mud and road debris while providing a neat factory-style replacement for a cracked or damaged original guard. This version is supplied without a mudflap.

  

⚙️ Key Features

  

• Designed for 13" trailer wheels

• Black moulded plastic construction

• UV-stabilised marine-trailer material

• Corrosion-free alternative to steel guards

• Factory-style Dunbier shape and carrier mounting pattern

• Supplied without a mudflap

  

📏 Specifications

  

• Wheel size: 13"

• Colour: Black

• Material: Moulded UV-stabilised plastic

• Mudflap: Not included

• Carrier and fastener kit are not included unless stated

  

🔄 Cross Reference & Related Parts

  

• Dunbier: 2380B

• Mackay: H3703B

• Same-size colour alternatives: 2380, 2380B and 2380G

• Guard fastener kit: Dunbier 2409

• Use with the matching 13" Dunbier guard carrier for the trailer layout

  

🚤 Trailer Compatibility & Application

  

• Suitable for Dunbier single- and tandem-axle trailers using the corresponding 13" plastic-guard carrier

• Confirm the complete guard length, carrier style and tyre clearance before ordering

• Colour variants share the same size family but should be checked against the trailer generation

  

🔌 Function

  

Covers the rotating tyre to limit spray and debris while providing a finished outer guard surface.

  

Common signs of wear or failure:

  

• Plastic is cracked around mounting holes

• Guard is distorted and contacts the tyre

• UV exposure has made the material brittle

• Deep gouges or impact damage weaken the guard

• Mounting holes no longer retain the fasteners securely

  

🛠️ Installation & Safety

  

• Fit only to a straight correctly aligned guard carrier

• Use Dunbier 2409 or equivalent broad-head guard fasteners

• Do not overtighten bolts against the plastic

• Maintain clearance around the tyre at full suspension travel

• Fit an approved mudflap separately where required by the trailer design or road regulations

  

📦 Condition

  

• Genuine Dunbier Marine Products part

• Brand new

• Supplied as one black 13" plastic guard without flap

• Supplied in original or equivalent packaging

## Details

- **Price:** 89.0 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 89.00 AUD | In stock |

## Images

- 2380B Dunbier H3703B Mackay Black Plastic Guard 13" Without Flap | Marine Trailer Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/2380b-dunbier-black-plastic-guard-13-no-flap-mackay-h3703b)
> Updated: 2026-08-05