# 3150 Dunbier 8" Bracket Only - Double | Marine Trailer Part

🔧 Product Description

  

Genuine Dunbier Marine Products Double Roller Bracket Only for 8" Rollers - Part Number: 3150

  

A galvanised double rocker bracket fitted with 0 8-inch no rollers supplied rollers. The assembly supports and guides the boat hull during launch and retrieval.

  

⚙️ Key Features

  

• No rollers supplied roller construction

• 0-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: 0

• Roller material/colour: No rollers supplied

• Leg length: Follow supplied bracket configuration

• Supply: double bracket only; rollers and shafts are not included

  

🔄 Cross Reference & Related Parts

  

• Complete rubber assembly: Dunbier 3146

• Hard-poly assembly: Dunbier 3157H

• Soft-poly assembly: Dunbier 3157

  

🚤 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:** 64.5 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 64.50 AUD | In stock |

## Images

- 3150 Dunbier 8" Bracket Only - Double | Marine Trailer Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3150-dunbier-8-bracket-only-double)
> Updated: 2026-08-05