Review (1)

GQ TD42 – Hydraulic Brake Booster Upgrade

AUD $1,695.00 (Excl. Tax AUD $1,540.91)

Out of stock
SKU: MFK20250
Marks 4WD

Hydraulic Brake Booster Upgrade Kit to suit GQ / Y60 Nissan Patrol with a TD42 Engine

The Marks 4WD 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 they are 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.

The test results braking from 100km/h, demonstrates why the upgrade is an important addition to your vehicle.

(Note: Results will vary with tyre dimensions, vehicle model and modifications)

Test vehicle – 79 series dual cab LandCruiser weighing 3780kg

  • Braking Distance – Standard factory vacuum – 98 metres
  • Braking Distance – Marks4wd Hydraulic booster58 metres

Advantages of our Upgrade

  • 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 (requires login)

Optional Brake Lines

Optional Products

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

To Suit

  • Nissan Patrol – GQ / Y60 TD42 – 4.2L Diesel


  • The hoses supplied with this unit will only fit right-hand drive vehicles

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    Customers reviews

    Review (1)
    1. Gary (verified owner)

      Great product! Easily lock up 35s wheels with little to no efforts on the brake pedal. Kits manufactured perfectly, straight bolt on, no modification needed.

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    MFK20130 Instructions

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    MFG20150 Drawing

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