Sierra 18-7812 Fuel Pump Kit, Replaces Mercury 89031A2, for Mercury/Mariner Outboard Motors

The Sierra 18-7812 Fuel Pump Kit is a replacement fuel pump kit built for Mercury and Mariner outboard motors. Each kit is manufactured with precision components and is designed to meet or exceed the performance of the original equipment part it replaces. The kit includes O-rings 18-7411 and 18-7120, giving you the sealing components needed alongside the fuel pump parts for a proper rebuild or replacement.

This kit is engineered as a direct interchange for several OEM and aftermarket part numbers, making it a straightforward option when your original Mercury or Mariner fuel pump needs service. Because fit is specific to certain outboard applications, confirm your existing part number against the cross-reference list below before ordering to ensure you get the correct kit for your motor.

Sierra builds this fuel pump kit using plastic components sized at 0.39 x 0.39 x 0.39 inches, and the completed kit weighs 0.04 pounds. It is sold as a single kit (1 count) intended for outboard motor fuel system service.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7812
• Category: Mercury Outboard Fuel Pump Kit
• Included Components: O-Rings 18-7411 and 18-7120
• Material: Plastic
• Item Dimensions: 0.39 x 0.39 x 0.39 inches
• Weight: 0.04 pounds
• Unit Count: 1
• UPC: 808282259969

Fitment

• Mercury/Mariner outboard motors using a fuel pump matching OEM part number 89031A2 or the cross-references listed below

Replaces (OEM)

• GLM 40360
• Mallory 9-37751
• Mercury 89031A2
• 66599A2

Frequently Asked Questions

What is the Sierra 18-7812 Fuel Pump Kit used for? The Sierra 18-7812 is a fuel pump kit designed for Mercury and Mariner outboard motors, providing the parts needed to service or rebuild the outboard's fuel pump.

What is included in the Sierra 18-7812 kit? The kit includes O-rings 18-7411 and 18-7120 along with the fuel pump kit components manufactured by Sierra.

Does the Sierra 18-7812 cross-reference to a Mercury OEM part number? Yes, the Sierra 18-7812 is built to interchange with Mercury OEM part number 89031A2 as well as 66599A2.

Are there other brand equivalents to the Sierra 18-7812? GLM 40360 and Mallory 9-37751 are listed as interchangeable part numbers alongside the Sierra 18-7812 fuel pump kit.

What material is the Sierra 18-7812 Fuel Pump Kit made from? This fuel pump kit is made of plastic components.

How much does the Sierra 18-7812 weigh? The Sierra 18-7812 Fuel Pump Kit weighs 0.04 pounds.

What are the dimensions of the Sierra 18-7812 kit? The kit measures 0.39 x 0.39 x 0.39 inches.

Is the Sierra 18-7812 a genuine Mercury part or aftermarket? The 18-7812 is a Sierra-manufactured aftermarket fuel pump kit engineered to meet or exceed the performance of the Mercury OEM part it replaces.

How do I know if the Sierra 18-7812 fits my outboard? Because fit is specific, check your existing fuel pump part number against the Sierra 18-7812 cross-reference list, which includes Mercury 89031A2, 66599A2, GLM 40360, and Mallory 9-37751, before ordering.

How many fuel pump kits come in one order of the Sierra 18-7812? Each order of the Sierra 18-7812 contains one fuel pump kit (1 unit count).