# 3157 Dunbier Soft Poly Roller and Bracket Double 8" | Marine Trailer Part

🔧 Product Description

  

Genuine Dunbier Marine Products Double Soft-Poly Roller and Bracket 8" - Part Number: 3157

  

A galvanised double rocker bracket fitted with 2 8-inch soft polyurethane rollers. The assembly supports and guides the boat hull during launch and retrieval.

  

⚙️ Key Features

  

• Soft polyurethane roller construction

• 2-roller double rocker bracket

• Galvanised marine-trailer bracket

• Roller rotates to reduce hull drag during loading

• Suitable for replacement or trailer-support adjustment

  

📏 Specifications

  

• Nominal roller size: 8-inch

• Roller quantity: 2

• Roller material/colour: Soft polyurethane, yellow

• Leg length: Follow supplied bracket configuration

• Supply: complete roller and bracket assembly

  

🔄 Cross Reference & Related Parts

  

• Single soft-poly version: Dunbier 3156

• Hard double version: Dunbier 3157H

  

🚤 Compatibility & Application

  

• Compatible Dunbier trailer roller stations matching the bracket width, leg spacing and roller shaft size

• Position rollers under structurally supported hull areas

• Set neighbouring rollers to share the hull load rather than creating isolated pressure points

• Confirm the assembly clears strakes, chines, transducers and hull fittings

• Use the correct roller shaft, washers and retaining clips

  

🔌 Function

  

Supports the hull and allows it to roll across the trailer with reduced friction while helping maintain centreline alignment.

  

Common signs of wear, damage or replacement required:

  

• Roller is cracked, worn flat, swollen or seized

• Bracket or legs are bent

• Roller shaft or holes develop excessive play

• Retaining hardware is missing

• Hull contacts the metal bracket

  

📦 Condition

  

• Genuine Dunbier Marine Products part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 153.5 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 153.50 AUD | In stock |

## Images

- 3157 Dunbier Soft Poly Roller and Bracket Double 8" | Marine Trailer Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3157-dunbier-soft-poly-roller-bracket-double-8)
> Updated: 2026-08-05