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4.6L General Discussion This section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.

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Old 05-19-2013, 07:34 PM   #1
silvr002001
 
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Default Help identifying a part

im not sure what the big black cylinder is on the drivers side firewall. it has the master cylinder attached to it. My big black whatever it is is leaking. Any help is appreciated
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Old 05-19-2013, 07:44 PM   #2
TheDullahan
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Have a pic? It sounds like the hydro boost system for your brakes. If its leaking it would be power steering fluid or brake fluid. Check to see if either is low.
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Old 05-19-2013, 07:55 PM   #3
mustangman03
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Its the hydrobooster for the power brakes. It runs off power steering fluid like said above.
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Old 05-19-2013, 08:45 PM   #4
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The black cylinder itself is a nitrogen charged hydraulic accumulator, it hold a small pressure reserve for the hydro-boost braking system...
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Old 05-19-2013, 09:45 PM   #5
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Thank you gents that's it
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Old 05-19-2013, 09:45 PM
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