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Viscosity Index 161
4038 - 1964-1972 A-Body Lower Control Arms- Poly/Roto-Joint
2017CM - 1978-1988 GM G-Body Adjustable Lower Control arms
The spherical rod ends supplied with this setup include CNC machined aluminum step bushings with steel sleeves to keep control arm centered in its mounting location
Please verify whether your vehicle has (1) or (2) upper control arms
UMI extended length control arms center rear wheels on Impala SS. Chevrolet Viscosity Index 161UMI Performance extended length control arms are designed to properly center the rear wheels in the wheel well of the Impala SS. These control arms are extended by 5 8 and feature additional adjustment capabilities to perfectly center the rear end. This adjustment allows users to lengthen or shorten the control arms by an additional beyond the initial 5 8". The control arms are constructed from 1. 500 DOM tubing and fully TIG welded for maximum
