• 3337 Dunbier Single Supa-Rolla Assembly Without Wobble Roller Arms | Marine Trailer Part
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3337 Dunbier Single Supa-Rolla Assembly Without Wobble Roller Arms | Marine Trailer Part

3337 Dunbier Single Supa-Rolla Assembly Without Wobble Roller Arms | Marine Trailer Part

$82.50 AUD
$82.50 AUD
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🔧 Product Description

Dunbier Single Supa-Rolla Mounting Assembly without Roller Arms – Part Number: 3337

A fully adjustable Dunbier single hull-support assembly using steel roller arms. It is designed to conform to the hull as the boat is loaded and to distribute support over multiple wobble-roller contact points. This reference is supplied 40mm leg, universal bracket and U-bolts only.

⚙️ Key Features

  • Mounting assembly supplied without roller arms
  • Steel Supa-Rolla construction
  • Adjustable hull-support geometry
  • Suitable for launch, retrieval and road support
  • Replaceable rollers, arms and mounting hardware
  • Designed for Dunbier and compatible trailer layouts where dimensions match

📏 Specifications

  • Assembly position: single
  • Roller count: 0
  • Arm material: steel
  • Supplied configuration: 40mm leg, universal bracket and U-bolts only
  • Crossmember and frame mounting must be confirmed

🔄 Cross Reference & Related Parts

  • Dunbier: 3337
  • Steel Supa-Rolla arm assembly: Dunbier 3261
  • Grey steel-trailer wobble roller: Dunbier 2969
  • Large yellow alloy-trailer wobble roller: Dunbier 2968
  • Related assemblies: Dunbier 3330–3342

🚤 Trailer Compatibility & Application

  • Suitable for Dunbier Supa-Rolla, alloy and compatible roller trailers using the matching assembly position
  • Roller-arm spacing and hull contact must be adjusted to the individual boat
  • Do not mix large-alloy roller arms and steel-system components without dimensional confirmation

🔌 Function

Supports, guides and centres the hull while allowing individual rollers to pivot and share the load.

⚠️ Common Signs of Failure

  • Rollers are seized, cracked or worn flat
  • Arms are bent or corroded
  • Bubble plates or pivots have excessive play
  • U-bolts loosen or elongate mounting holes
  • Hull load is concentrated on one or two rollers

🛠️ Installation & Safety

  • Support the boat before replacing a loaded assembly
  • Mount to the correct crossmember section with rated U-bolts
  • Set all arms so the hull is supported evenly
  • Confirm rollers rotate freely and do not contact strakes incorrectly
  • Recheck alignment after loading the boat

📦 Condition

  • Genuine Dunbier Marine Products part
  • Brand new
  • Supplied as one single supa-rolla mounting assembly without roller arms
  • Supplied in original or equivalent packaging

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

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?

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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