# 3448 Dunbier Trailer Winch Post 50mm Square, Suits 76mm DrawBar | Marine Trailer Part

🔧 Product Description

  

Dunbier Galvanised Winch Post 630 × 50 × 50mm for 76mm Drawbar - Part Number: 3448

  

A galvanised structural winch post with a 50 × 50mm section, designed to clamp or bolt to a 76mm-wide drawbar. It supports the winch and bow carrier at the height and angle needed to pull the boat securely into its bow stop. The published post height is approximately 630mm.

  

⚙️ Key Features

  

• Post section: 50 × 50mm

• Drawbar application: 76mm-wide drawbar

• Galvanised marine-trailer construction

• Supports compatible manual or electric winch carrier

• Adjustable mounting position along the drawbar

• Replacement for bent or corroded original post

  

📏 Specifications

  

• Post section: 50 × 50mm

• Drawbar: 76mm-wide drawbar

• Height/variant: 630mm

• Trailer application: Dunbier trailers approximately 4.4-5.0m

• Winch, carrier and mounting U-bolts are not included unless stated

  

🔄 Cross Reference & Related Parts

  

• Dunbier: 3448

• Matching carrier family: 3458-3500 according to post section

• Plastic cap family: 3452, 3453 and 3454

• Winch and bow roller are sold separately unless stated

  

🚤 Trailer Compatibility & Application

  

• Suitable for Dunbier trailers approximately 4.4-5.0m

• Post section and base-plate hole pattern must match the drawbar

• Bow-eye height and winch line must be aligned before tightening

  

🔌 Function

  

Carries the winch and bow stop so the retrieval load is transferred into the trailer drawbar.

  

Common signs of wear or failure:

  

• Post is bent or leaning

• Base plate or welds are cracked

• Mounting holes are elongated

• Deep corrosion reduces wall thickness

• Winch line does not align with the bow eye

  

🛠️ Installation & Safety

  

• Support the boat and unload the winch before replacement

• Use rated U-bolts or high-tensile bolts

• Set the post angle so the bow roller supports the bow without excessive force

• Align the winch strap or cable with the bow eye

• Recheck all fasteners after the first retrieval

  

📦 Condition

  

• Genuine Dunbier Marine Products part

• Brand new

• Supplied as one galvanised trailer winch post

• Supplied in original or equivalent packaging

## Details

- **Price:** 192.0 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 192.00 AUD | In stock |

## Images

- 3448 Dunbier Trailer Winch Post 50mm Square, Suits 76mm DrawBar | Marine Trailer Part
- 3448 Dunbier Trailer Winch Post 50mm Square, Suits 76mm DrawBar | Marine Trailer Part
- 3448 Dunbier Trailer Winch Post 50mm Square, Suits 76mm DrawBar | Marine Trailer Part
- 3448 Dunbier Trailer Winch Post 50mm Square, Suits 76mm DrawBar | Marine Trailer Part
- 3448 Dunbier Trailer Winch Post 50mm Square, Suits 76mm DrawBar | Marine Trailer Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3448-dunbier-trailer-winch-post-50mm-sq-suits-76mm-drawbar)
> Updated: 2026-08-05