Industrial K-27, K-28 Lower Inner Arm Control Shaft Kit is a left‑side replacement for the lower inner control arm shaft used on 1939–1948 Chevrolet passenger cars with open knee suspension. It is sold as New Old Stock (NOS) Regal K-27, K-28 and is listed as a direct replacement for GM part numbers 605003 and 605004, as well as Moog K-28 (643) and K-27 (642). For proper installation, verify compatibility with your exact year and suspension configuration, as this kit is designed specifically for the left-hand inner shaft on the described Chevy models.
