Direct-fit POWERFLEX PFR3-127 bush for the rear differential crossmember on Audi A4, S4, RS4 (1995-2001), plus B3/B4 80/90 Quattro, S2 and RS2. Replaces OEM A 8A0 599 257.
Purple 80ShA polyurethane - stiffer than rubber, more resilient than cheap alternatives
Cuts drivetrain slop and rear diff twist: sharpens throttle response and improves traction on fast road or track day use
No modification needed - bolts straight in using original hardware
