A1350 Mackay 1688S Dunbier Bearing Set LM & Two-Part Seal Skin Pack | Marine Trailer Part
A1350 Mackay 1688S Dunbier Bearing Set LM & Two-Part Seal Skin Pack | Marine Trailer Part
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🔧 Product Description
Genuine Mackay Marine Trailer Products LM Marine Bearing Set with Two-Part Seal – Part Number: A1350
A skin-packed LM trailer wheel-bearing kit for standard 39mm round and 40mm square marine-trailer axle stubs.
⚙️ Key Features
- Complete wheel-bearing service set for one hub
- Tapered roller bearings support radial and thrust loads
- Marine two-part seal helps limit water entry and grease loss
- Suitable for scheduled maintenance or hub repair
- Allows the original hub to be retained when serviceable
📏 Specifications
- Bearing configuration: LM inner L68149/L68110 and outer L44649/L44610 family
- Seal type: Two-part LM marine grease seal
- Tapered bearing cups and cones must be replaced as matched sets
- Bearing numbers engraved on the removed components remain the primary fitment check
📋 Supplied Components
- 1 × Inner bearing cup and cone
- 1 × Outer bearing cup and cone
- 1 × Two-part marine seal
🔄 Cross Reference & Related Parts
- Dunbier cross reference: 1688S
- Replacement two-part LM seal pair: Mackay A1354 / Dunbier 1715S
🚤 Compatibility & Application
- Standard LM-bearing trailer hubs on compatible 39mm round and 40mm square axle stubs
- Clean and inspect the stub-axle journals, hub bores and seal surface before installation
- Pack bearings fully with compatible marine wheel-bearing grease
- Set axle-nut preload so the hub rotates freely without measurable looseness
- Fit a new split pin and dust cap after adjustment
🔌 Function
Supports smooth wheel rotation on the axle stub while the seal retains grease and limits water contamination.
⚠️ Common Signs of Failure
- Bearing is noisy, rough, overheated or discoloured
- Wheel has excessive end play
- Races are pitted, flaked or scored
- Grease is milky or contaminated with water
- Seal leaks or no longer grips the axle sealing surface
📦 Condition
- Genuine Mackay Marine Trailer 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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