For Super M Series

1"-16 right hand threads

Fits Hesston/Fiat Swather: 6400 - Replaces OEM Number 8020307

2-3/4" inlet ID

2555 and more - Replaces OEM Numbers AL39311

Maxiforce Exhaust Valve B Series for Cummins 3901607 f_Measurement_5-1/2" x 3-3/4" x 3" For Super M SeriesAftermarket Exhaust Valve for the Cummins 4BT 3. 9 diesel engine. Direct replacement for Cummins 3901607. Fits These Models Cummins Windrowers: 1840, 1845C, 450C, 455C, 480E, 480F, 550E, 550G, 570LXT, 580K, 580L, 580SE, 580SK, 580SL, 584E, 585E, 586E, 650G, 686G, 8860, 8870, 9010, 9010B, 9020B, 95XT, CASE, GXR, LL, LXT, R140LC 9S, R140W 9S, SL, W11B, XT Cummins Excavators: LGS1822B, LRS1016, PC220LC 7, PC220LL 7L, R YM50, R YM60, SANY, SY75C, WA200 5,