H3330 Mackay 1010 Dunbier 2-Hole Standard Coupling 2000kg | Marine Trailer Part

🔧 Product Description

Genuine Mackay Marine Trailer Products Standard Two-Hole 50mm Trailer Coupling – Part Number: H3330

A standard fixed ball coupling for unbraked or independently braked trailers up to the coupling’s 2,000kg rating. The galvanised body uses a 50mm tow-ball head and a simple two-hole mounting arrangement suitable for compatible trailer drawbars and coupling plates.

⚙️ Key Features

• Rated to 2,000kg
• Standard 50mm tow-ball connection
• Two-hole mounting configuration
• Galvanised finish for marine-trailer use
• Adjustable ball head and replaceable trigger components

📏 Specifications

• Maximum coupling rating: 2,000kg
• Tow-ball size: 50mm
• Mounting style: Two-hole fixed coupling
• Finish: Galvanised
• Tow-ball and trailer fasteners are not included unless stated

🔄 Cross Reference & Related Parts

• Mackay reference: H3330
• Dunbier adjustment bolt: 1011
• Dunbier packaged replacement trigger kit: 1044C
• Comparable category: Australian-compliant 2,000kg two-hole 50mm fixed trailer coupling

🚤 Compatibility & Application

• Compatible boat and utility trailers using the same two-hole drawbar mounting pattern
• Trailer ATM and braking configuration must comply with local road regulations
• Confirm drawbar width, mounting-hole centres and fastener grade
• Not a hydraulic or mechanical override coupling

🔌 Function

Connects the trailer drawbar to the vehicle tow ball and provides the primary articulated towing joint.

⚠️ Common Signs of Failure

• Coupling does not close or lock smoothly
• Excessive movement on a correctly sized tow ball
• Worn trigger or safety catch
• Cracked, bent or heavily corroded body
• Loose or elongated mounting holes

📦 Condition

• Genuine Mackay Marine Trailer Products part
• Brand new
• Supplied in original or equivalent packaging