on the power steering rack and they are bigger than what Lucas can fix. But give the Lucas some time to seal. I used it on the wife's Infiniti it took about a month or so but it sealed it. Leak helped the old boot to fail, replaced the boot after leak stopped. To prevent dirt from getting on the PS piston shaft and causing further damage while waiting for leak to stop I zip tied a plastic baggy wrap over the broken boot with slack to allow PS rack movement- worked great but definitely temp getto.