A1625GK Mackay 2012 Dunbier Load Share Springs 60 Wide x 7 LF (OffSet) 3.7 Tonne Kit | Marine Trailer Part

🔧 Product Description

Mackay 7-Leaf 60mm Tandem Load-Sharing Spring Set – 3700kg – Part Number: A1625GK

A matched tandem load-sharing spring set for Mackay and corresponding Dunbier heavy boat trailers. The 7-leaf, 60mm-wide spring assemblies are arranged as position-specific front and rear units around the centre rocker system, allowing the suspension to equalise load between both axles. Mackay's current catalogue rates the complete 7-leaf set at approximately 3700kg.

⚙️ Key Features

• 7-leaf heavy-duty spring packs
• 60mm spring width
• Published complete-set rating: 3700kg
• Offset/position-specific tandem spring geometry
• Zinc-Tech/Dacromet-style protective finish
• Designed for Mackay load-sharing rocker suspension

📏 Specifications

• Leaf count: 7
• Spring width: 60mm
• Nominal replacement spring length: approximately 720mm
• Complete spring-set rating: 3700kg
• Set comprises matched front and rear position spring assemblies
• Rocker arms, hangers and bolts are separate unless included in the current package

🔄 Cross Reference & Related Parts

• Mackay: A1625GK
• Dunbier: 2012
• Rear replacement spring: Mackay A1625RG
• Front replacement spring: Mackay A1625FG
• Load-share hangers: Mackay A1667N and A1668N

🚤 Trailer Compatibility & Application

• Suitable for tandem Mackay/Dunbier trailers engineered for the matching 60mm load-share system
• The complete spring set must be used with the correct rocker arms, axle spacing and hangers
• The published spring-set rating does not override the trailer compliance plate or component ratings

🔌 Function

Supports a tandem axle group and transfers changing wheel loads through the centre equaliser so both axles remain engaged on uneven roads.

⚠️ Common Signs of Failure

• Tandem axles no longer share load evenly
• Springs have different camber from side to side
• Leaf packs are cracked or separated
• Rocker arms or spring eyes show excessive movement
• Tyres scrub because axle alignment has shifted
• Suspension bottoms frequently under normal load

🛠️ Installation & Safety

• Replace the complete position-matched set when overall suspension balance is lost
• Inspect rocker arms, bushes, centre pins and hangers before installation
• Support both axles and the chassis independently
• Use new correctly rated U-bolts and spring bolts
• Set axle alignment and verify brake-line clearance
• Recheck all suspension fasteners after the first loaded road test

📦 Condition

• Genuine Mackay Trailers part
• Brand new
• Supplied as one complete 7-leaf tandem load-sharing spring set
• Supplied in original or equivalent packaging