3138B Dunbier Bolt -On Frame U Bracket | Marine Trailer Part
3138B Dunbier Bolt -On Frame U Bracket | Marine Trailer Part
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✓ Authorised Volvo Penta Dealer · Marine & auto specialists · Ships Australia-wide
🔧 Product Description
Genuine Dunbier Marine Products Bolt-On Galvanised Frame U-Bracket – Part Number: 3138B
A galvanised bolt-on frame U-bracket for attaching a 20mm square solid steel or tube roller, pad or support leg to a compatible trailer frame. The bracket provides a pivoting or clamped connection using the supplied half-inch fastener arrangement.
⚙️ Key Features
- Bolt-on mounting configuration
- Galvanised finish
- Accepts a 20mm square solid steel or tube support leg
- Replaceable trailer-support mounting component
- Supply format: bracket with galvanised 1/2-inch bolt and nut
📏 Specifications
- Leg size: 20mm square solid steel or tube
- Pivot/retaining fastener: 1/2-inch bolt and nut
- Installation type: Bolt-on
- Surface finish: Galvanised
📋 Supplied Components
- bracket with galvanised 1/2-inch bolt and nut
🔄 Cross Reference & Related Parts
- Weld-on raw version: Dunbier 3139
- Weld-on galvanised version: Dunbier 3139G
🚤 Compatibility & Application
- Compatible Dunbier roller, pad or support legs matching the stated section
- Weld-on versions must be installed by a competent welder
- Protect raw metal after welding with a suitable marine corrosion-control system
- Bolt-on versions require correct frame width, backing and fastener torque
🔌 Function
Secures a support leg to the trailer frame while providing the required fixed or pivoting connection.
⚠️ Common Signs of Failure
- Bracket is cracked, bent or distorted
- Bolt hole is elongated
- Weld is cracked or corroded
- Support leg has excessive movement
- Retaining bolt or nut is damaged
📦 Condition
- Genuine Dunbier Marine 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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