# 1093 Dunbier H3271K Mackay Hand Brake Lever Including Adjuster, Bolts and Hardware 100mm | Marine Trailer Part

🔧 Product Description

  

Dunbier Mechanical Brake Handbrake Assembly for 100mm Drawbar - Part Number: 1093

  

A complete mechanical trailer handbrake lever assembly configured to mount around a 100mm square tube. The kit includes the operating lever, cable adjuster and associated bolts and hardware as supplied, allowing the parking-brake mechanism to be renewed as a complete unit.

  

⚙️ Key Features

  

• Complete mechanical handbrake lever assembly

• Mounting configuration for 100mm square tube

• Integrated brake-cable adjustment point

• Includes installation bolts and associated hardware

• Suitable for marine trailer mechanical brake systems

  

📏 Specifications

  

• Drawbar application: 100mm square tube

• Brake type: Mechanical cable-operated disc or drum system, as configured

• Assembly includes lever and adjuster

• Exact mounting-hole layout should be compared with the existing assembly

  

🔄 Cross Reference & Related Parts

  

• Dunbier: 1093

• Mackay: H3271K

• Related mechanical brake cable and adjuster components must be matched to the trailer

• Other sizes in the Dunbier family: 1090, 1093, 1094 and 1096

  

🚤 Trailer Compatibility & Application

  

• Suitable for Dunbier and compatible trailer drawbars of the specified section size

• Cable pull direction and attachment point must match the brake system

• Not a replacement for hydraulic-coupling handbrake/master-cylinder assemblies

  

🔌 Function

  

Applies and holds the trailer's mechanical brakes while parked and provides the cable-adjustment point for correct brake travel.

  

Common signs of wear or replacement:

  

• Lever ratchet or pawl will not hold

• Cable adjuster is seized or reaches the end of its travel

• Pivot holes are elongated

• Lever or mounting bracket is bent

• Parking brake applies unevenly or releases incompletely

  

🛠️ Installation & Safety

  

• Secure the trailer and release cable tension before removal

• Mount squarely to the correct drawbar size with the supplied high-tensile hardware

• Adjust both wheel brakes before using the handbrake cable adjuster

• Ensure the brakes release fully when the lever is lowered

• Test the parking brake on a controlled incline before road use

  

📦 Condition

  

• Brand new Dunbier Marine Products trailer component

• Supplied as one complete handbrake assembly for 100mm square tube

• Supplied in original or equivalent packaging

## Details

- **Price:** 36.45 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 36.45 AUD | In stock |

## Images

- 1093 Dunbier H3271K Mackay Hand Brake Lever Including Adjuster, Bolts and Hardware 100mm | Marine Trailer Part
- 1093 Dunbier H3271K Mackay Hand Brake Lever Including Adjuster, Bolts and Hardware 100mm | Marine Trailer Part
- 1093 Dunbier H3271K Mackay Hand Brake Lever Including Adjuster, Bolts and Hardware 100mm | Marine Trailer Part
- 1093 Dunbier H3271K Mackay Hand Brake Lever Including Adjuster, Bolts and Hardware 100mm | Marine Trailer Part
- 1093 Dunbier H3271K Mackay Hand Brake Lever Including Adjuster, Bolts and Hardware 100mm | Marine Trailer Part
- 1093 Dunbier H3271K Mackay Hand Brake Lever Including Adjuster, Bolts and Hardware 100mm | Marine Trailer Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/1093-dunbier-hand-brake-lever-inc-adjuster-bolts-etc-100mm-mackay-h3271k)
> Updated: 2026-08-03