fuel 2 Set 3406 Fuel Injection Line Kit For Caterpillar 3406B 3406C 1917942 1917943 Posted on December 14, 2023 by admin 1 qty – #2 Fuel Line (OE # 7C3422, 4P9662, 1917942, 4P3922). 1 qty – #3 Fuel Line (OE # 7C3423, 4P9663, 1917943, 4P3923). Fits for 3406, 3406B, 3406C, 980G, 980F, D8R, D8N, 826C, D400E. 1 qty – #1 Fuel Line (OE # 7C3421, 4P9661, 1917941, 4P3921). 3406b 3406c caterpillar fuel injection line