The Welger I8876415 is a genuine OEM spring designed for use in a wide range of Welger balers, including AP series (AP 41, AP 45, AP 50, AP 51, AP 52, AP 53, AP 61, AP 63, AP 71, AP 73, AP 83, AP 400, AP 500, AP 600, AP 700, AP 730, AP 800), RP series (RP 12, RP 15, RP 100, RP 120, RP 150, RP 200, RP 200 MASTER, RP 220, RP 235, RP 245, RP 320, RP 320 MASTER, RP 325, RP 400, RP 435, RP 445, RP 520, RP 535, RP 545), and D series (D 4000, D 5000, D 6000, D 6000 MASTER, D 6060, D 6080, D 6090). It is also compatible with Lely Welger RP 245, RP 245 Profi, RP 245 Tornado, and RP 445 models. This high-quality spring measures 120 mm in length, with an outer diameter of 28 mm and a wire diameter of 4 mm, providing essential tension and support for baler components.