fuel Fuel Injection Line Kit & Clamps 1917941 Fit For Caterpillar 3406 3406B 3406C Posted on December 7, 2023 by admin 3406 FUEL INJECTION LINE KIT 6 PCS 1917941 1917942 1917943 FOR CAT CATERPILLAR. 1 x 1917941 Line. 1 qty – #1 Fuel Line (OE # 7C3421, 4P9661, 1917941, 4P3921). 3406b 3406c caterpillar clamps fuel injection line