H3330 Mackay 1010 Dunbier 2-Hole Standard Coupling 2000kg | Marine Trailer Part
H3330 Mackay 1010 Dunbier 2-Hole Standard Coupling 2000kg | Marine Trailer Part
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🔧 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
Shipping & Delivery
Shipping & Delivery
Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.
Returns & Warranty
Returns & Warranty
14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. Full details in our Refunds & Returns policy.
Not sure this fits?
Not sure this fits?
Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.
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