A1321-12" Mackay Deemax Integral Hub 12" Ventilated Stainless 6-Stud | Marine Trailer Part
A1321-12" Mackay Deemax Integral Hub 12" Ventilated Stainless 6-Stud | Marine Trailer Part
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🔧 Product Description
Genuine Mackay Marine Trailer Products DeeMaxx 12" Ventilated Stainless Integral Hub and Rotor – Six Stud – Part Number: A1321-12"
A premium marine-brake hub and 12-inch ventilated stainless-steel rotor assembly for heavy trailers. The six-stud LandCruiser pattern and ventilated stainless rotor provide high corrosion resistance and heat capacity for compatible DeeMaxx/Kodiak-style calipers.
⚙️ Key Features
- Galvanised or corrosion-resistant marine-trailer construction
- 6 stud × 139.7mm PCD wheel mounting pattern
- Heavy-duty DeeMaxx/US-style bearing configuration
- Designed for compatible mechanical or hydraulic trailer braking where specified
- Serviceable bearings, seals, dust cap and wheel studs
📏 Specifications
- Wheel-size application: Heavy-duty LandCruiser-pattern wheels
- Stud pattern: 6 stud × 139.7mm PCD
- Bearing family: Heavy-duty DeeMaxx/US-style
- Rotor/hub specification: 12-inch ventilated stainless integral hub/rotor
- Published application rating: heavy-duty trailer system; confirm exact axle and DeeMaxx rating
- Brake application: Hydraulic disc brake
- Wheel studs, bearing preload, seal and caliper alignment must follow the component specification
- Bearing references and integral-hub offset must be matched to the installed axle before supply
📋 Supplied Components
- 1 × DeeMaxx 12-inch ventilated stainless integral hub/rotor assembly
🔄 Cross Reference & Related Parts
- DeeMaxx slip-over stainless rotor reference: RTR-120-SS family
- MAAX-coated alternative: Mackay A1321MAX
🚤 Compatibility & Application
- Confirm wheel stud PCD, centre bore, bearing journals, seal surface and axle-nut thread
- Brake rotor thickness and offset must match the caliper and mounting bracket
- The complete running-gear capacity is limited by the lowest-rated axle, bearings, hub, wheel, tyre, brakes and suspension
- Set bearing preload and wheel-nut torque correctly after installation
- Flush and inspect regularly after saltwater immersion
🔌 Function
Supports the trailer wheel on tapered roller bearings and, on disc-hub versions, provides the friction rotor used by the brake caliper.
⚠️ Common Signs of Failure
- Bearing noise, heat or excessive wheel play
- Rotor is scored, cracked, warped or below minimum thickness
- Stud holes or wheel studs are damaged
- Seal leakage or water-contaminated grease
- Hub or rotor has excessive runout
📦 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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