Buy Caterpillar 1W6977 - SEAL GROUP-CRANKSHAFT at wholesale prices with easy payment and fast shipping options. Save up to 50% OFF OEM pricing. Compatible Machines:- ENGINE - GENERATOR SET- ENGINE - INDUSTRIAL- ENGINE - MARINE Compatible Models:- 3516- G3512- G3516- 3508- 3512- 3516- 3508- 3512- 3516- 3508- 3512- 3516 Units Containing The Spare Part :- 7N1854 CRANKSHAFT SEAL GROUP (3512)- 105-4656 SEAL AS-WATER (3512)- 105-4657 SEAL AS-WATER (3516)- 7W-8144 PULLEY GP-FAN DRIVE (3512)- 7N-1854 SEAL GP-CRANKSHAFT (3516)- 7W3813 SEAL GP-CRANKSHAFT (3516)(Caterpillar - B-Brand)