1010 Dunbier H3330 Mackay 2-Hole Standard Coupling 2000kg | Marine Trailer Part
1010 Dunbier H3330 Mackay 2-Hole Standard Coupling 2000kg | Marine Trailer Part
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🔧 Product Description
Dunbier Standard Two-Hole Trailer Coupling 50mm – 2000kg – Part Number: 1010
A galvanised standard trailer coupling for 50mm tow balls and trailers up to the coupling's marked 2000kg rating. The two-hole mounting base is commonly used on light and medium boat-trailer drawbars, while the adjustable ball socket allows wear clearance to be set correctly.
⚙️ Key Features
- Standard 50mm ball coupling
- Two-hole drawbar mounting pattern
- Galvanised finish
- Adjustable ball-head clearance
- Positive trigger locking mechanism
📏 Specifications
- Coupling rating: 2000kg
- Tow-ball size: 50mm
- Mounting pattern: Two-hole
- Finish: Galvanised
- Tow ball and mounting hardware are not included unless stated
🔄 Cross Reference & Related Parts
- Dunbier: 1010
- Mackay: H3330
- Adjustment bolt: Dunbier 1011
- Trigger kit: Dunbier 1044C
- Tow ball: Dunbier 1061 / Mackay H3354
- Comparable category: AL-KO, Ark and Trojan two-hole 50mm couplings with matching rating and bolt centres
🚤 Trailer Compatibility & Application
- Suitable for unbraked trailers and trailers with independent braking systems where a fixed coupling is specified
- Check the trailer compliance plate and required coupling rating
- Mounting-hole spacing and drawbar width must match the existing installation
🔌 Function
Provides the primary mechanical connection between the trailer drawbar and the vehicle's 50mm tow ball.
⚠️ Common Signs of Failure
- Coupling rattles excessively on the tow ball
- Trigger or safety catch does not lock
- Ball socket is visibly worn or deformed
- Mounting holes are elongated
- Corrosion prevents smooth operation
🛠️ Installation & Safety
- Fit using correctly rated high-tensile bolts and locking nuts
- Adjust only enough to remove excessive ball clearance while preserving free articulation
- Verify positive latching by lifting the coupling after connection
- Connect the safety chain separately
- Do not exceed the lowest marked rating in the towing system
📦 Condition
- Brand new Dunbier Marine Products trailer component
- Supplied as one complete two-hole 50mm coupling
- 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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