Hydraulic gear pump drive C3974850 fits Cummins 6BT5.9 diesel engine. 36‑tooth external gear, 11‑spline inner bore, 6‑mounting holes. It transmits engine power to drive hydraulic gear pump, high‑strength alloy steel gear, precise spline machining, stable power transmission, widely used for engineering machinery and truck engines, direct replacement for original spare parts.
