# 1969 Dunbier Mechanical Disc Caliper Mounting Bolt Sleeve | Marine Trailer Part

🔧 Product Description

  

Dunbier Mechanical-Caliper Mounting Bolt Sleeve - Single - Part Number: 1969

  

A single replacement sleeve for the mounting bolt used in compatible Dunbier mechanical disc-brake calipers. The sleeve provides the correct spacing and bearing surface through the caliper or bracket, allowing controlled movement without the mounting bolt crushing or distorting the assembly.

  

⚙️ Key Features

  

• Single caliper mounting-bolt sleeve

• Maintains correct caliper spacing

• Provides a smooth sliding or pivot surface

• Suits compatible Dunbier mechanical disc brakes

• Replacement for worn or corroded original hardware

  

📏 Specifications

  

• Quantity: 1 sleeve

• Application: Dunbier mechanical caliper mounting hardware

• Length, bore and outside diameter must match the original

  

🔄 Cross Reference & Related Parts

  

• Dunbier: 1969

• Pair pack: Dunbier 1969P / Mackay H3091

• Mechanical caliper: Dunbier 1971 / Mackay H3260G

• Caliper mount: Dunbier 1970 / Mackay H3261K

  

🚤 Trailer Compatibility & Application

  

• Suitable for the mechanical caliper assembly using the matching shoulder/sleeve arrangement

• Not a universal spacer for hydraulic calipers

• Inspect the mounting bolt and bracket bore at the same time

  

🔌 Function

  

Maintains the designed clearance and alignment between the mechanical caliper, mounting bolt and bracket.

  

Common signs of wear or replacement:

  

• Sleeve is grooved, oval or seized

• Caliper movement is loose or restricted

• Mounting bolt is worn where it passes through the sleeve

• Uneven pad contact or caliper alignment

• Corrosion prevents removal

  

🛠️ Installation & Safety

  

• Support the caliper before removing the mounting bolt

• Compare the new sleeve with the original dimensions

• Replace worn bolts and nuts

• Lubricate only where specified and keep lubricant off pads and disc

• Confirm caliper movement and bolt torque after assembly

  

📦 Condition

  

• Brand new Dunbier Marine Products trailer component

• Supplied as one mechanical-caliper mounting bolt sleeve

• Supplied in original or equivalent packaging

## Details

- **Price:** 8.0 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 8.00 AUD | In stock |

## Images

- 1969 Dunbier Mechanical Disc Caliper Mounting Bolt Sleeve | Marine Trailer Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/1969-mech-disc-caliper-mounting-bolt-sleeve)
> Updated: 2026-08-05