Lincoln OEM PUMP L11532 3B 9SL11532 3B NR 211 the Magnum 400 gun is KH840XL the Magnum 400 gun is built for operator comfort when welding with the greater heat levels generated by higher amperage applications Duty) 11210 LF 72 (Bench Model) 11075 LF 72 (Bench Model) 11607 LF 72 (Bench) 11076 LF 72 (CE) 11227 LF 72 (HD Bench Model) 11711 LF 72 (HD) 11609 LF 72 CCC 12422 LF 74 (Base Model) 11712 LF 74 (Base Model) CCC 12442 LF 74 (HD Bench Model) 11713 LF 74 (HD Bench Model) CCC 12443 LF 74 (Base Model) 11195 LF 74 (Bench Model) 11196 LF 74 (HD Bench Model) 11197 Installation guidance Lincoln OEM PUMP L11532 3B 9SL11532 3B