Buy Caterpillar 1P6837 - INSERT-VALVE SEAT at wholesale prices with easy payment and fast shipping options. Save up to 50% OFF OEM pricing. Compatible Machines:- ENGINE - INDUSTRIAL Compatible Models:- G3306 Units Containing The Spare Part :- 6N8875 CYLINDER HEAD ASSEMBLY (3304)- 7N8524 CYLINDER HEAD ASSEMBLY (3304)- 6N8875 CYLINDER HEAD ASSEMBLY (3304)- 6N8097 CYLINDER HEAD GROUP (3306)- 6N8097 CYLINDER HEAD GROUP (3306)- 7N8536 CYLINDER HEAD GROUP (3306)- 7N8536 CYLINDER HEAD GROUP (3306)- 6N8097 CYLINDER HEAD GP*R (3306)- 2Y-7289 CYLINDER HEAD GP (G3306)- 5Y0091 CYLINDER HEAD GP (G3304)- 2Y8942 CYLINDER HEAD GP (3304)