Steering worm gear is also commonly referred to as a steering sector gear
These sickle bar knife sections are also referred to sickle bar blades or knife teeth for mowers and combines
Case IH part numbers: 350084R2
Farmall Cub Tractor with C-22 Belly Mount Sickle Mowers
Rebuilt Clutch Pressure Plate for Massey Ferguson 300, 410, 510, 540, 550 Combines, 1021903M91 Steering worm gear is alsoRebuilt Clutch Pressure Plate for Massey Ferguson 300, 410, 510, 540, 550, and 750 (Early Model) Combines. Rebuilt by NeilCo in Columbia, South Carolina. 8" Inch Clutch Pressure Plate. Single stage clutch with 3 fingers and 6 coil springs. Clutch flywheel step is 1. 882" inch. Please measure your pressure plate and compare to listing photos before ordering as some combines had multiple types of clutches. Clutch was rebuilt in the 1980's. Clutch