These are my Powerflex Rear Wishbone Bushes, removed 21 months (around 8/9000 miles) after fitting.
I changed these back to Ford "FRP" bushes, as the Powerflex allow water to enter, and the pivoting metal centres (not stainless steel), had rusted/siezed up. This made an awful metallic grating noise and resulted in the centre bolts wearing the metal, from round holes to oval.
Following my complaint to Powerflex, they now supply a tube of grease to help prevent the rusting (although, at the price thay charge, they should have used S/Steel for the metal components!).
It's generally found that you need original Ford wishbones to get a good fit. Some people have found that aftermarket wishbone hole diameters vary.
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