Parts list: № Number Qty Name Options 1 AA85899 1 Knocker 2 H136447 1 Arm 3 H136449 1 Pin Fastener 4 M61287 1 Compression Spring 5 A102718 1 Knocker Small Flat Disk Next page: ST766425 Pneumatic Downforce Spring, Shaft Drive, Regular Arm, Inner, Performance Upgrade Kit ST766452 Drive Studs, Short, RH ST766822 Narrow Width Sprocket ST766644 Row Cleaner, Narrow Arm ST1008664 Tru-Vee™ Opener, Shank, Performance Upgrade Kit ST1008054 Clip, Row Unit Hose Retention, Pneumatic Closing Wheels, Performance Upgrade Kit ST769526 Reflector, Red Rear ST818987 Shield, Double Disk, Performance Upgrade Kit ST999143 Knocker and Seed Disk, Sunflower Seed, Performance Upgrade Kit ST766262 Shield, Double Disk