The Idler Arm roller kit that Firm Feel sells ONLY work with the MOOG idlers, I bought 2 different brands, one I disassembled only to find it wouldn't work. The other was listed somewhat deceptively on E-bay shock -it was NOT a MOOG as listed. I checked that one more carefully and no it wouldn't work either. Even "good" idlers don't hold up very long, I only averaged 6 months of daily driving. I don't have a handle on the longevity or the rollerized one. luck