John Deere®
Fits Tractors with 9"/10" Dual Clutch, Cover Assembly Includes PTO Disc - 300, 301, 830, 840, 920, 930, 940
Fits Tractor with Continuous PTO - 820
Fits Tractor with Continuous PTO without Reverser with Flywheel AT21382 - 1020

Fits Tractors with 9"/11" Dual Clutch, Cover Assembly Includes PTO Disc - 1040, 1140, 2120
Fits Tractors with Flywheel AR92506 - 1020 Mannheim, 1030 Mannheim, 1130, 1630, 1640, 2240 (ASN 350000)
Fits Tractor with Flywheel AT21382 - 1530
Fits Tractor with Flywheel AT21382 - 2240 (BSN 349999)

Fits Tractor with Continuous PTO or Hi-Lo Shift - 1520
Fits Tractors with Continuous PTO, Mannheim - 2020, 2030
Fits Tractors with Continuous PTO with Flywheel AT21381 - 2020, 2030
Fits Tractor with Continuous PTO with Mid-PTO with Flywheel AR92506 - 2155
Fits Tractor with Continuous PTO with Flywheel AR92506 - 2450
Fits Tractors with Continuous PTO with Flywheel AR92507 - 2350, 2355
Fits Tractor with Continuous PTO with Flywheel AR66779 - 2440
Fits Tractors with Continuous PTO with Flywheel AR66070 - 2630, 2640

Fits Tractor with  Engine PTO with Flywheel AT21382 - 2040 (BSN 349999)
Fits Tractor with Engine PTO with Flywheel AR92507 - 2040 (ASN 350000)

with RCO* PTO Disc
1 1/2”, 23 Spline

*Definition:
RIGID
This term refers specifically to the drive plate that is attached directly to the solid steel plate. Opposite of dampened.
CUSHIONED
The clutch lining/steel plate will have some type of link to absorb the shock load. Most commonly you will see extra rivets and links between the ID of the facings and the OD on the drive plate. Not one solid steel plate.
ORGANIC
Organic clutch material is most commonly used in agricultural clutch discs. It provides the most flexibility.