• A1304 Mackay 1780 Dunbier Bearing Buddy (USA) Per Pair | Marine Trailer Part
  • A1304 Mackay 1780 Dunbier Bearing Buddy (USA) Per Pair | Marine Trailer Part, image 2
  • A1304 Mackay 1780 Dunbier Bearing Buddy (USA) Per Pair | Marine Trailer Part, image 3
1 3

A1304 Mackay 1780 Dunbier Bearing Buddy (USA) Per Pair | Marine Trailer Part

A1304 Mackay 1780 Dunbier Bearing Buddy (USA) Per Pair | Marine Trailer Part

$57.00 AUD
$57.00 AUD
Sale Sold out
Shipping calculated at checkout.

✓ Authorised Volvo Penta Dealer · Marine & auto specialists · Ships Australia-wide

🔧 Product Description

Genuine Mackay Marine Trailer Products Bearing Buddy USA Spring-Loaded Bearing Protectors – Pair – Part Number: A1304

A genuine USA-made Bearing Buddy pair for standard marine-trailer hubs. Chrome-plated and stainless components provide the original spring-loaded pressure system used to keep grease against the bearings and help resist water entry.

⚙️ Key Features

  • Spring-loaded bearing-protector design maintains positive grease pressure
  • Helps reduce water entry through the hub seal during launching and retrieval
  • Suitable for routine greasing without removing the hub cap
  • Supplied as a matched pair for one axle
  • Marine-trailer service component

📏 Specifications

  • Fitment: Standard LM-style hub family; confirm the press-fit outside diameter
  • Press-fit diameter must match the hub bore exactly
  • Grease type must be compatible with the existing hub grease
  • Do not over-pressurise the hub or force grease past the rear seal

📋 Supplied Components

  • 2 × Genuine Bearing Buddy protectors

🔄 Cross Reference & Related Parts

  • Dunbier cross reference: 1780
  • Economy bearing-protector pair: Mackay A1305-2 / Dunbier 1779
  • LandCruiser/heavy-duty Bearing Buddy pair: Mackay A1306 / Dunbier 1781
  • Protective PVC covers: Mackay A1307-2 / Dunbier 1782

🚤 Compatibility & Application

  • Compatible trailer hubs with the exact protector press-fit diameter
  • Measure the hub bore rather than relying only on axle size
  • Install squarely without striking or distorting the spring piston
  • Inspect and service wheel bearings independently; a protector does not repair damaged bearings

🔌 Function

Maintains a slight spring-loaded grease pressure inside the hub to help exclude water and keep the wheel bearings lubricated.

⚠️ Common Signs of Failure

  • Protector is loose in the hub bore
  • Spring piston is seized or will not accept grease
  • Grease or water leaks around the protector
  • Cover is missing and contamination builds around the piston
  • Hub continues to take excessive grease because the rear seal has failed

📦 Condition

  • Genuine Mackay Marine Trailer Products part
  • Brand new
  • 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.

View full details