? Concave inserts improve threshing and prevent cobs w/ unthreshed kernels from passing through the open area at the rear of the concave. For "Loewen" and OEM concaves. Replaces AH171207, AH153688, AH137523, AH143744 mega-cross: (1 to 9 of 9) Replaces: AH137523 JOHN DEERE AH143744 JOHN DEERE AH153688 JOHN DEERE AH171207 JOHN DEERE CJDI9000 *** NO CLASS *** Crossed From: AV103686 VAPORMATIC CV103686 VAPORMATIC WN-AH206756 A I MEGA-CROSS WNAH206756 A I MEGA-CROSS sections and models: (1 to 20 of 33) next Threshing Area Concaves John Deere COMBINE: CTS John Deere COMBINE: CTS II John Deere COMBINE: C670 John Deere COMBINE: T550 John Deere COMBINE: T560 John Deere COMBINE: T660 John Deere COMBINE: W540 John Deere COMBINE: W550 John Deere COMBINE: W650 John Deere COMBINE: W660 John Deere COMBINE: 9400 John Deere COMBINE: 9410 John Deere COMBINE: 9450 John Deere COMBINE: 9500 John Deere COMBINE: 9500SH John Deere COMBINE: 9510 John Deere COMBINE: 9510SH John Deere COMBINE: 9550 John Deere COMBINE: 9550SH John Deere COMBINE: 9560 sections and models: (21 to 33 of 33) prev John Deere COMBINE: 9560SH John Deere COMBINE: 9600 John Deere COMBINE: 9610 John Deere COMBINE: 9640I WTS John Deere COMBINE: 9640WTS John Deere COMBINE: 9650 John Deere COMBINE: 9650CTS John Deere COMBINE: 9660 John Deere COMBINE: 9660CTS John Deere COMBINE: 9660I WTS John Deere COMBINE: 9660WTS John Deere COMBINE: 9680I WTS John Deere COMBINE: 9680WTS