GU with LS1/ LS2 V8 (VZ) Engine – Hydraulic Brake Booster Upgrade (Non-ABS)

AUD $1,735.00 (Excl. Tax AUD $1,577.27)

In stock
SKU: MFK20442
Marks 4WD

Hydraulic Brake Booster Upgrade Kit to suit GU / Y61 Nissan Patrol (Non-ABS) with a (VZ) LS1 / LS2 V8 engine

The Marks 4WD hydro brake upgrade kit utilises the AC Delco hydraulic brake booster units sourced from AC Delco in the USA. Our workshop then completely strips down and machines each unit for a direct bolt-in fit to the particular vehicle model.

This style of hydraulic unit has been used in braking systems for decades in most Ford and Chevrolet heavy-duty vehicles, where it is well-proven for reliability and performance.

The hydraulic brake booster unit connects in line with your existing power steering pump without affecting the operation or feel of the factory steering.

As the line pressure in the braking system is increased when using the hydraulic unit from around 1,000 PSI up to around 2,000 PSI, we recommend replacing your old factory rubber brake lines with our Marks 4WD ADR-approved stainless steel braided brake lines.

Our engineers have fully tested the vehicles’ braking systems to ensure they meet current Australian vehicle standards. This enables us to provide the necessary documentation to assist with having the unit approved for your 4WD.

Our engineers have fully tested the GU Nissan Patrol’s vehicles’ braking systems to ensure they meet Australian vehicle standards.


Vehicle Engineering Requirements

  • For the GU Nissan Patrol Hydraulic Brake Booster upgrade, we can provide the necessary testing documentation for your engineer.
  • Please provide your vehicle’s VINMake / ModelOwner’s Name, and your Marks4WD Invoice No. to [email protected] for the required documentation.
  • Installation of this product will require approval by a recognised Vehicle Certifying Engineer.
  • Please contact your local engineer for the requirements in your state.


Test Vehicle Brake Results

The test results, showing the braking performance from 100 km/h, highlight why this upgrade is an essential improvement for your vehicle.

Results will vary with different tyre dimensions, vehicle models and modifications.

Vehicle – Toyota LandCruiser 79 series dual cab weighing 3780kg

  • Braking Distance – Standard factory vacuum – 98 metres
  • Braking Distance – Marks4wd Hydraulic booster – 58 metres


Advantages of Upgrading to a Hydro Brake Booster

  • Reduced pedal effort
  • Increased stopping power
  • More responsive brake pedal
  • Engineered to meet VSB14 requirements


Kit Includes

  • Genuine AC Delco hydro brake booster – modified to suit each vehicle model
  • All required hoses, hose clamps, bolts & washers
  • Downloadable Instructions


Optional Brake Lines


Optional Products



  • An Engineering Certificate will be required in order to be compliant with the Australian Design Rules.
  • The engine must be fitted with an aluminium power steering pump (M16) to suit this kit.
  • (Aluminium power steering pumps are fitted to VZ LS engines)
  • The hoses supplied with this unit will only fit right-hand drive vehicles
  • Not suitable for vehicles fitted with ESC (Electronic Stability Control) 08/2012 on


To Suit – Nissan Patrol GU / Y61 (NON- ABS)

  • Fitted with a VZ LS1 / LS2 V8
  • Does not fit drum brake rear models

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