18-3113 70977 Water Pump Insert Cup for Mercury Outboard

Sierra part number 18-3113, Insert Cup.

This water pump insert cup is for Mercury outboard motors.

This is a brand new Sierra part. It replaces Mercury 70977, 70977T.

Please check the part numbers for your fitment needs. If you are unsure whether this part fits your model, please contact us with your serial number and we can help determine if it is right for your engine. Thanks for looking!!!

Thank you for shopping at our store!!

Christine