The DCRS300120 is an aftermarket common rail pressure regulating valve (SCV) designed for John Deere 6020 Series tractors. This critical component ensures precise fuel pressure regulation within the common rail system, optimizing engine performance and efficiency. It is a direct replacement for OEM part numbers RE507804, RE507806, and Bosch 0928400617. Confirmed fitment includes John Deere 6120, 6220, 6320, 6420, 6520, 6620, 6820, and 6920 models. The valve measures 95 mm in length, 51 mm in width, and 51 mm in height, with a weight of 0.12 kg.