4J-0519 : 3.53 x 31.34 mm 90A NBR O-ring. M330D M325C MH. 772B 784B 772 776 776D 776C 776B 768C 768B. 983 943 941 953 973C 951C 951B 953B 977H 941B 953C 977K 977L 955H 955K 955L 983B. CHAIN LOADER. IT28 IT38G IT38F IT28F IT28B IT62G II IT38G II.