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I have 1999 911 C4 (996) There is a leak in the ABS hydraulic unit part # 99635575540 Looking for replacement part but seems very specific. Any options on alternative part numbers? New part number 99635595560,

Thanks,

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Looks like only 996-355-755-40 or it's direct replacement 996-355-755-60 will work on your car.

MY99 through MY01 had lots if changes so you will need one of the matching units.

Also, you will need a Durametric, Porsche PST2, or PIWIS tester to properly bleed the ABS/ PSM circuit.

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Just as a follow-up... Finally found a used ABS Hydraulic unit at a salvage yard in Edgerton, WI. cost about $400. pretty easy install and had a local shop bleed and test the system. Checked out good and saved $$$. Would like to find a place to send the old unit for repair if possible.

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