These are a High Quality Aftermarket Cylinder
Suits: Nissan GQ Patrol Models fitted without a vacuum Booster
The vacuum booster is a round black Cylinder that looks like the brake booster only smaller, and it is fitted between the master cylinder and the firewall. if your master cylinder is bolted directly to your firewall then your system is not boost assisted.
All of these cylinders have an Aluminium bore, which means
They wear easier than a cast steel bore, hence we have had a lot more success replacing the whole cylinder instead of trying to rebuild.
These are a direct bolt in Item, with no modifications required.
