Buy Caterpillar 7N8957 - GEAR-CRANKSHAFT at wholesale prices with easy payment and fast shipping options. Save up to 50% OFF OEM pricing. Compatible Machines:- ARTICULATED DUMP TRUCK- ENGINE - MACHINE Compatible Models:- D350E- D400E- 3406- 3406C Units Containing The Spare Part :- 6N2213 REAR GEAR GROUP (3406)- 7C-9213 GEAR GP-REAR (D350E)- 7C9213 GEAR GP-REAR (D400D)- 7C9213 GEAR GP-REAR (D400D)