Re-Mfg. HEAVY DUTY Torque Amplifier Assy.
CTPA-1250255HD-R Replacement Part to Fit:  Case/IH For Models: 3388, 3588, 6388, 6588 Match w/ driven gear 68142C2, 47 tooth 25 degree, reference IH's new number 1277208C91 (The driven gear is not furnised as a part of the T/A Assembly)  Price:  $945.00  Buyers Club Price:  $850.50