Polyurethane bushings are small, durable parts made of a strong material called polyurethane. They are used to reduce friction and absorb shock in moving parts, like car suspension systems. Full definition
3:73 posi rearend with boxed in trailing arms with polyurethane bushings and a Monte Carlo SS sway bar. (shoppok.com)
It also has new polyurethane bushings in the torque arm, MSD cap, rotor and wires; GM water pump, wipers, belts, hoses, plugs and brake pads; battery and floor mats. (barrett-jackson.com)
These problems are easily remedied with new polyurethane bushings by Energy Suspension, which outperform standard rubber bushings. (carparts.com)