2851 Dunbier E4045 Mackay 7 Pin Flat Trailer Plug Skin Pack | Marine Trailer Part
2851 Dunbier E4045 Mackay 7 Pin Flat Trailer Plug Skin Pack | Marine Trailer Part
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✓ Authorised Volvo Penta Dealer · Marine & auto specialists · Ships Australia-wide
🔧 Product Description
Dunbier 7-Pin Flat Trailer Plug – Skin Pack – Part Number: 2851
A trailer-side plug for the Australian 7-pin flat trailer-connector system. The connector carries lighting, electric-brake and approved auxiliary circuits according to the wiring arrangement used by the towing vehicle and trailer.
⚙️ Key Features
- Connector format: 7-pin flat
- Installation role: trailer-side plug
- Moulded Electrical housing
- Screw-terminal or manufacturer-specified internal connections
- Replacement for damaged, corroded or incompatible trailer connectors
📏 Specifications
- Pin count: 7
- Format: 7-pin flat
- Pack style: Skin pack, bulk or loose as stated
- Pin allocation must follow the connector diagram and vehicle wiring
🔄 Cross Reference & Related Parts
- Dunbier: 2851
- Mackay: E4045
- 7-pin flat pair: Dunbier 2851 plug and 2852 vehicle socket
- Large-round family: Dunbier 2820, 2830, 2831D, 2834 and 2835
- 12-pin pair: Dunbier 2836 vehicle socket and 2837 trailer plug
🚤 Trailer Compatibility & Application
- Suitable for vehicles and trailers using the 7-pin flat Australian connector layout
- Large-round pin conventions can vary by state and existing wiring history
- Twelve-pin connectors provide additional auxiliary circuits beyond basic lighting
🔌 Function
Creates a removable electrical connection between the towing vehicle and trailer for road lighting, brakes and auxiliary functions.
⚠️ Common Signs of Failure
- Pins are corroded, burnt or loose
- Plug will not retain in the socket
- One or more trailer functions fail
- Housing is cracked or water affected
- Cable clamp no longer provides strain relief
🛠️ Installation & Safety
- Disconnect the vehicle battery or isolate the circuit before wiring
- Follow the pin diagram rather than wire colour alone
- Tighten terminals securely without cutting conductor strands
- Clamp the outer cable sheath for strain relief
- Test every circuit, including brakes and auxiliaries, before towing
📦 Condition
- Genuine Dunbier Marine Products part
- Brand new
- Supplied as one trailer-side plug
- 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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