3457 Dunbier Heavy-Duty Winch Post 100 x 100 Suits Alloy 100 Wide Drawbar | Marine Trailer Part
3457 Dunbier Heavy-Duty Winch Post 100 x 100 Suits Alloy 100 Wide Drawbar | Marine Trailer Part
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🔧 Product Description
Dunbier Heavy-Duty 100 × 100mm Winch Post for Alloy-Trailer Drawbar – Part Number: 3457
A galvanised structural winch post with a 100 × 100mm section, designed to clamp or bolt to a approximately 100mm-wide alloy drawbar. It supports the winch and bow carrier at the height and angle needed to pull the boat securely into its bow stop.
⚙️ Key Features
- Post section: 100 × 100mm
- Drawbar application: approximately 100mm-wide alloy 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: 100 × 100mm
- Drawbar: approximately 100mm-wide alloy drawbar
- Height/variant: trailer-specific
- Trailer application: Dunbier alloy trailer platform
- Winch, carrier and mounting U-bolts are not included unless stated
🔄 Cross Reference & Related Parts
- Dunbier: 3457
- 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 alloy trailer platform
- 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 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
Shipping & Delivery
Shipping & Delivery
Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.
Returns & Warranty
Returns & Warranty
14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. Full details in our Refunds & Returns policy.
Not sure this fits?
Not sure this fits?
Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.
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