The HCCZ Hydraulic Override Trailer Coupling provides reliable braking performance for compatible boat and utility trailers. Featuring a 2000kg rated capacity, 50mm towball connection and zinc-finished steel construction, this complete coupling incorporates a 3/4-inch hydraulic master cylinder and brake mounting bracket. Its sliding override mechanism automatically activates the trailer's hydraulic brakes during deceleration, while the quick-release paddle and reverse latch provide convenient operation.
Couplings
Hydraulic Override Trailer Coupling – 50mm Towball 2000kg Zinc
SKU: SR-HCCZ
$172.65
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Key benefits
Key Benefits
- - 2000kg Rated Capacity: Suitable for correctly configured trailers up to 2 tonnes.
- - Hydraulic Master Cylinder Included: 3/4-inch cylinder operates compatible hydraulic trailer brakes.
- - 50mm Towball Connection: Fits standard Australian 50mm towballs.
- - Automatic Override Braking: Sliding mechanism activates hydraulic brakes during deceleration.
- - Reverse Latch: Temporarily prevents brake application when reversing.
- - Quick-Release Paddle: Convenient coupling and uncoupling.
- - Adjustable Coupling Head: Allows adjustment for correct towball fit.
- - Zinc Finish: Provides corrosion resistance.
- - ADR Approved: Manufacturer-listed Component Type Approval CTA-061099.
Specifications & Dimensions
- - Manufacturer Part Number: HCCZ
- - Product Type: Complete hydraulic override trailer coupling
- - Rated Capacity: 2000kg (2 tonnes / 4,409lb)
- - Manufacturer's Stated Trailer Weight Range: 750–2000kg
- - Towball Diameter: 50mm (1.97")
- - Braking System: Hydraulic override
- - Master Cylinder Bore: 3/4" (19.05mm)
- - Mounting Configuration: Bolt-on
- - Mounting Hole Centres: 185 × 55mm (7.28 × 2.17")
- - Mounting Hole Diameter: 13mm (0.51")
- - Material: Steel
- - Finish: Zinc
- - Reverse Mechanism: Manual reverse latch
- - Security: Padlock facility
- - Coupling Adjustment: Adjustable screw
- - Compliance: AS 4177.3
- - Component Type Approval: CTA-061099
Trailer Compatibility
- Suitable for correctly rated trailers equipped with compatible hydraulic braking systems, including
- - Aluminium boat trailers
- - Fibreglass boat trailers
- - Fishing boat trailers
- - Single-axle boat trailers
- - Tandem-axle trailers within the approved rating
- - Hydraulic-braked box trailers
- - Hydraulic-braked utility trailers
- - General-purpose hydraulic-braked trailers
- Important: The HCCZ is designed for hydraulic trailer brakes. It is not a direct replacement for an electric brake coupling or a mechanical cable-operated override coupling.
Suitable Applications
- - Boat trailer hydraulic brake repairs
- - Replacement of worn override couplings
- - Trailer brake system refurbishment
- - Hydraulic master cylinder and coupling replacement
- - Compatible boat and utility trailer maintenance
Important Fitment Information
- - Confirm the trailer weight and braking arrangement are suitable for the 2000kg coupling.
- - Verify the towing vehicle uses a 50mm towball.
- - Check the 185 × 55mm mounting hole centres.
- - Confirm the trailer drawbar is suitable for bolt-on installation.
- - Use correctly rated high-tensile mounting hardware.
- - Verify hydraulic brake line compatibility and connection fittings.
- - Bleed the hydraulic braking system after installation.
- - Check the master cylinder, brake lines and calipers for leaks.
- - Ensure the reverse latch is disengaged before normal forward towing.
- - Follow the manufacturer's installation and adjustment instructions.
Signs the Coupling Needs Replacing
- - Excessive movement around the towball
- - Worn or damaged quick-release locking mechanism
- - Hydraulic fluid leaking from the master cylinder
- - Reduced trailer braking performance
- - Seized or damaged override slide mechanism
- - Corroded or cracked coupling body
- - Damaged mounting holes
- - Reverse latch failing to operate correctly
- - Excessive wear around the towball socket
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