4 Pin Trigger Plug fits Lincoln Weld Pak 140HD WeldPak 140 HD 11635 Welder Attention: Due to the existence of multiple versions of Lincoln's Weld Pak 140HD welder, please check and verify that your welder's code number is 11635 before making a purchase. The code number for Lincoln welders can be found on the number plate of the welder and is a 5-digit code.