GDJL76, 78, 79 – Hydraulic Brake Booster Upgrade

Hydraulic Brake Booster Upgrade Kit to suit GDJL76, 78, 79 Toyota LandCruiser (08/2023 On)

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 a VDJ70 Series Toyota LandCruiser vehicles’ braking systems to ensure they meet Australian vehicle standards.

Vehicle Engineering Requirements

• For the GDJ70 Series Toyota LandCruiser Hydraulic Brake Booster upgrade, we can provide the testing documentation used for the VDJ70 series LandCruiser to assist your engineer.
• Please provide your vehicle’s VIN, Make / Model, Owner’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 hydroboost brake booster – modified to suit each vehicle model
• Power steering pump to hydraulic brake booster unit hose
• Hydraulic brake booster to power steering box hose
• Low-pressure return hose
• Return line T piece
• Hose clamps, bolts & washers

Optional Brake Lines

• Click here for our Toyota LandCruiser 70 Series Braided Brake Lines
  
• Assembled in-house here at Marks4WD
• Made to Order – Allow 3-5 business days before dispatch from the date of order.
• Every hose is pressure tested to 3000PSI in our workshop
• Sold as complete sets only

Optional Products

• High-temperature brake pads
• High-quality slotted brake rotors
• New brake master cylinder

Notes

• An Engineering Certificate will be required in order to be compliant with the Australian Design Rules.
• The hoses supplied with this unit will only fit right-hand drive vehicles.

To Suit – Toyota LandCruiser (ABS)

• GDJL76, 78, 79 (08/2023 On)