AL-KO 3/4inch Hydraulic Master Cylinder

AL-KO 3/4inch Hydraulic Master Cylinder

$49.10

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The Hydraulic Trailer Master Cylinder – Override Coupling is a high-quality replacement master cylinder designed for hydraulic override trailer braking systems. Available…

Description

The Hydraulic Trailer Master Cylinder – Override Coupling is a high-quality replacement master cylinder designed for hydraulic override trailer braking systems. Available in 3/4", 7/8", and 1" bore sizes, it suits single, tandem, and tri-axle trailers fitted with 2,000kg override couplings. Designed for use with hydraulic drum or disc brake systems, it delivers smooth and reliable brake actuation when paired with correctly bled and adjusted brakes.

Selecting the correct bore size ensures optimal braking performance based on your trailer's axle configuration.

Features:

  • Suits hydraulic override trailer braking systems
  • Compatible with 2,000kg override couplings
  • Available in 3/4", 7/8", and 1" bore sizes
  • Suitable for hydraulic drum and hydraulic disc brake systems
  • Designed for use with 14", 15", and 16" trailer wheels
  • Heavy-duty construction for reliable performance and long service life
  • Compatible with flexible braided hydraulic brake hoses
  • Easy installation using a zinc mounting bracket (sold separately)

Master Cylinder Applications:

  • 3/4" Bore – Suits single axle trailers with two hydraulic wheel cylinders
  • 7/8" Bore – Suits tandem axle trailers with four hydraulic wheel cylinders
  • 1" Bore – Suits tri-axle trailers up to 4.5 tonnes with six hydraulic wheel cylinders

Installation Notes:

  • Mounts using a hydraulic master cylinder bracket with 54mm bolt hole centres
  • Install the bracket using suitable 1/2" bolts through the bracket, coupling, and drawbar
  • Disconnect the parking brake during installation
  • After bleeding the brake system, adjust the lower nut to approximately 2mm from the rear of the override mechanism before locking it in place

Brake Fluid Compatibility:

  • Use DOT 3 or DOT 4 brake fluid only
  • Do not use DOT 5 brake fluid unless specifically recommended by the brake system manufacturer, as silicone-based DOT 5 fluid can damage seals and cause caliper pistons to bind.

Shipping & Pick Up

We dispatch from our Moorebank, NSW store using trusted freight providers, with delivery Australia-wide. Shipping costs are calculated at checkout and tracking is provided once your order ships.

 

Bulky items such as towbars and trailers may have different delivery arrangements or be pickup only. Free click & collect is available from 321 Newbridge Road, Moorebank NSW 2170.
 

[View our Shipping & Refunds Policy]

Returns & Warranty

Change of mind: we may accept change-of-mind returns at our discretion, provided the item is unused, undamaged and in its original packaging. A 20% restocking fee applies, and return freight is at the customer’s cost.
 

Faulty or wrong item: if your product is faulty, damaged or not as described, we’ll make it right. Your rights under Australian Consumer Law always apply.
 

Please contact sales@carasel.com.au before returning any item.
 

[View our FAQs] · [Shipping & Refunds Policy]

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FREQUENTLY ASKED QUESTIONS

STRAIGHT ANSWERS BEFORE YOU BUY

We’ve answered the questions our customers ask most, from delivery and click & collect to fitting and returns. Still unsure? Give our team a call on 02 9601 3666.

Buying a trailer is a big decision, so we answered the questions Aussies ask most covering towing, extras, safety, servicing, and registration.

BROWSE ALL FAQS

Can I pick up my order in store?

Yes. Click & collect is free from our Moorebank store, 321 Newbridge Road, Moorebank NSW 2170. We’ll email you when it’s ready.

Do you deliver?

We ship to locations across Australia. Due to the size and weight of some towbar and trailer products, certain items may require specialised freight or have different delivery arrangements.

Can you fit my towbar?

Yes. Our team can fit towbars at our Moorebank store. Call us on 02 9601 3666 to book.

How do I contact you?

Call us on 02 9601 3666 or email sales@carasel.com.au. We’re happy to help.
AL-KO 3/4inch Hydraulic Master Cylinder

AL-KO 3/4inch Hydraulic Master Cylinder

$49.10