1、Replacement Parts: This pressure reducing valve can replace OEM parts such as for Stihl 1128 020 9400 and 503 71 53 01. 2、Wide Application: This pressure reducing valve is suitable for many types of equipment, such as chain saws, brushcutters, and cleaning saws. 3、Made Of Metal: This pressure reducing valve is made of excellent quality metal, which is rigid, not easy to wear, and has a long service life. 4、Applicable Models: This pressure reducing valve is suitable for Stihl FS300, FS350, FS500, FS550, FS550L, FR350, FR450, FR480, FR480C, 024, 026, 036, 038, 036QS, 044, 046, 066, MS240, MS260, MS260C, MS360, MS360C, MS380, MS381, MS440, MS460, MS650, MS660 ms260c, ms360, ms360c, ms380, ms381, ms440, ms460, ms650, ms660. 5、Easy To Install: This pressure reducing valve is very easy to install, you just need to align the threads and screw it onto the appropriate device.