# 3346 Dunbier Poly Pad (Centreline) 300mm | Marine Trailer Part

🔧 Product Description

  

Dunbier Grey Centreline Plastic Trailer Pad 300mm - Part Number: 3346

  

A Dunbier hull-support pad measuring approximately 300mm. Its grey moulded plastic provides a broad longitudinal contact surface that supports the hull during transport and guides it during launch and retrieval. This reference is supplied in the includes 20mm square-leg mount in the current centreline kit.

  

⚙️ Key Features

  

• Approximate length: 300mm

• Construction: grey moulded plastic

• Broad hull-support area

• Marine-trailer replacement component

• Suitable for adjustable pad brackets and trailer-specific mounts

• Contact material can be renewed when worn, subject to pad design

  

📏 Specifications

  

• Length: 300mm

• Construction: grey moulded plastic

• Configuration: includes 20mm square-leg mount in the current centreline kit

• Mounting brackets and fasteners must match the trailer

  

🔄 Cross Reference & Related Parts

  

• Dunbier: 3346

• Related pad lengths: 3351-3369

• Round-leg pad bracket: Dunbier 3306

• Centreline mounting system: Dunbier 3346 where applicable

  

🚤 Trailer Compatibility & Application

  

• Suitable for the nominated Centreline, Water Toy, Loader or Loader-Pro trailer family

• Pad length, section and mounting-hole positions must match the trailer

• Set pad angle and height to support structural hull areas

  

🔌 Function

  

Spreads hull weight over a long contact area and guides the boat along the trailer.

  

Common signs of wear or failure:

  

• Plastic or carpet is worn through

• Steel or timber backing is bent, rotten or corroded

• Fasteners protrude into the hull-contact surface

• Pad is misaligned

• Hull weight is concentrated at one end

  

🛠️ Installation & Safety

  

• Support the boat before adjustment

• Use brackets rated for the pad and crossmember

• Set both sides symmetrically unless hull shape requires otherwise

• Recess all fasteners below the contact surface

• Replace torn carpet or worn plastic before the backing contacts the hull

  

📦 Condition

  

• Genuine Dunbier Marine Products part

• Brand new

• Supplied as one 300mm Dunbier trailer pad

• Supplied in original or equivalent packaging

## Details

- **Price:** 13.0 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 13.00 AUD | In stock |

## Images

- 3346 Dunbier Poly Pad (Centreline) 300mm | Marine Trailer Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3346-dunbier-poly-pad-centre-line-300mm)
> Updated: 2026-08-05