2024 Dunbier A1612 Mackay 7-Leaf Off Road Spring 60 x 890mm | Marine Trailer Part

🔧 Product Description

Dunbier Heavy-Duty Off-Road Eye-to-Eye Spring 60mm × 890mm - Part Number: 2024

A heavy-duty 60mm-wide, approximately 890mm-long off-road trailer spring identified in the supplied Dunbier listing as a seven-leaf assembly. Current reseller data is inconsistent, with some Mackay text describing an eight-leaf 1300kg spring and other catalogue data listing seven leaves and approximately 1550kg per pair. The physical leaf count and permanent rating on the supplied spring should be confirmed before installation.

⚙️ Key Features

• Heavy-duty eye-to-eye off-road spring

• 60mm-wide spring pack

• Approximately 890mm overall length

• Dacromet-coated for corrosion resistance

• Uses heavy 16mm shackle-bolt hardware

📏 Specifications

• Supplied-title leaf count: 7

• Width: 60mm

• Length: Approximately 890mm

• Shackle-bolt diameter: 16mm

• Published references conflict between approximately 1300kg and 1550kg per pair; use the supplied spring marking

• Mackay reference: A1612

🔄 Cross Reference & Related Parts

• Dunbier: 2024

• Mackay: A1612

• Use matching heavy-duty hangers, bushes, bolts and U-bolts

• Not part of the standard 45mm × 780mm slipper-spring family

🚤 Trailer Compatibility & Application

• Suits trailer chassis designed around the 60mm × 890mm eye-to-eye spring geometry

• Confirm eye centres, free camber, leaf count and marked capacity

• Do not substitute for a slipper spring without engineered suspension changes

🔌 Function

Supports the trailer between two pivoting spring eyes, providing heavy-duty suspension travel for rough-road trailer applications.

Common signs of wear or replacement:

• Broken or shifted leaves

• Eye bushes or 16mm bolts are worn

• Spring has flattened or twisted

• Cracks are visible around spring eyes

• Trailer ride height or axle alignment has changed

🛠️ Installation & Safety

• Verify the actual spring rating and leaf count before fitting

• Replace springs in matched pairs

• Use new bushes, shackle bolts and U-bolts

• Tighten eye bolts so the bushes can articulate as designed

• Check axle alignment and loaded clearance

📦 Condition

• Brand new Dunbier Marine Products trailer component

• Supplied as one 60mm × 890mm heavy-duty off-road spring

• Supplied in original or equivalent packaging