Does anyone know from where can I buy "Performance valve" for 93 Bonneville? These are the valve that regulates brake fluids. They are located under the car in the brake fluid line. May be there is a different name for it????

I had poor brake performance and I took it to mechanic. He told me that its either those performance valve or the master cylinder. But his recommendation is to change those valve first, and this is from his drive test experince on brakes.

Please help.

Thanks in advance for any input.

I think it might be the Pressure Metering Valve you are looking for. You can try "Pontiac Parts" - Pontiac parts and accessories catalog here or you local dealer. I'm not sure if Autozone or anyone like that carries them.

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Thanks much. I will check it out and will edit profile.