PDI Dual Diaphragm Brake Booster Upgrade suitable for Nissan Patrol GU Y61
A GU Patrol set up for touring, towing or bigger tyres is a lot of weight to stop on the factory booster. This PDI booster replaces it with a brand new dual diaphragm unit. It’s larger than the factory booster and has a higher assist ratio, so the same push on the pedal puts more force into the master cylinder.
It’s ADR tested and compliant.
🚗 Suitable for:
- Nissan Patrol GU Y61 with the factory 4 bolt master cylinder
📦 What’s Included:
- 1 x PDI dual diaphragm brake booster, GU 4 bolt master cylinder version
🔧 Fitment Details:
- The GU version suits the factory 4 bolt master cylinder. PDI also make a GQ version for the 2 bolt master. Apart from that, the two units are the same.
- Suited to trucks running a higher GVM or GCM, larger wheels and tyres, or touring, towing and off road setups.
- With the stronger booster fitted you can set the load proportioning valve (LPV) properly, rather than relying on the LPV rod spacer that many lift kits add.
- We recommend fitting braided brake lines at the same time. Line pressure goes up with this booster, and old rubber lines swell under pressure, which softens the pedal.
⚙️ Why Choose PDI:
- PDI (Performance Diesel Intercoolers) have been making brake boosters since 2019. They tested the common “30% upgraded” boosters on the market before designing their own.
- Two diaphragms and a larger diameter than the factory booster give it more assist.
- Brand new, not a reconditioned factory unit.
- ADR tested and compliant.
📦 Dispatch Information:
Contact us for current stock and lead times.
❓ FAQs:
Q: Will this fit a GQ Patrol?
A: Only if the GQ has been converted to a 4 bolt GU master cylinder. A GQ with its factory 2 bolt master needs the GQ version.
Q: Do I need braided brake lines as well?
A: They aren’t required, but we recommend them. The booster raises line pressure, and original rubber lines can swell or fail after this many years on a 4WD.
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