Sierra 18-3412 Water Pump Kit with Housing, Replaces 63V-W0078-01, for Yamaha 9.9 & 15 HP Outboards

The Sierra 18-3412 Water Pump Kit with Housing is a complete replacement water pump assembly built for Yamaha outboard engines. The kit includes the pump housing along with the internal components needed to restore proper cooling water circulation, helping protect the powerhead from overheating damage caused by a worn or failed impeller housing. Sierra formulates the impeller compound in each kit based on the size and application of the pump, and the remaining kit components are built to meet or exceed original equipment specifications for reliable, long-term performance.

This kit is constructed from cast iron and stainless steel for durability in a saltwater and freshwater marine environment. It ships as a complete kit rather than a single component, so installers replacing a worn pump housing have the parts needed for the job in one package, including a housing bolt (O.E. #97095-08045-00, qty. 4).

The 18-3412 kit is designed to fit Yamaha 9.9 HP (1996-09) and 15 HP (1996-09) outboards, as well as Yamaha F9.9 (2005-06), F15 (1998-05), and T9.9 (2005-06) models. It replaces Yamaha OEM water pump numbers 63V-W0078-01 and 63V-44301-00.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3412
• Product Type: Water Pump Kit (with Housing)
• Material: Cast Iron, Stainless Steel
• Weight: 0.59 pounds
• Item Package Dimensions: 7.1 cm L x 11.5 cm W x 12.8 cm H
• Country of Origin: Taiwan, Province Of China
• UPC: 808282287023
• Kit Contents: Water pump housing and internal kit components, including Bolt O.E. #97095-08045-00 (Qty. 4)

Fitment

• Yamaha 9.9 HP (1996-09)
• Yamaha 15 HP (1996-09)
• Yamaha F9.9 (2005-06)
• Yamaha F15 (1998-05)
• Yamaha T9.9 (2005-06)

Replaces (OEM)

• 63V-W0078-01
• 63V-44301-00

Frequently Asked Questions

What does the Sierra 18-3412 water pump kit include? The 18-3412 kit includes a complete water pump housing along with the internal kit components needed for installation, including a housing bolt (O.E. #97095-08045-00, quantity 4).

Which Yamaha outboards does the 18-3412 water pump kit fit? This kit fits Yamaha 9.9 HP (1996-09) and 15 HP (1996-09) outboards, as well as Yamaha F9.9 (2005-06), F15 (1998-05), and T9.9 (2005-06) models.

What OEM part numbers does the 18-3412 replace? Sierra 18-3412 replaces Yamaha OEM numbers 63V-W0078-01 and 63V-44301-00.

What material is the 18-3412 water pump housing made of? The housing and kit components are made of cast iron and stainless steel for durability in marine use.

How much does the Sierra 18-3412 water pump kit weigh? The kit weighs 0.59 pounds.

Does the 18-3412 kit come with the housing or just the impeller? It comes with the housing included, unlike impeller-only kits; this is a full water pump kit with housing.

Is the Sierra 18-3412 an OEM part or an aftermarket replacement? The 18-3412 is a Sierra-manufactured replacement kit engineered to meet or exceed original equipment specifications, cross-referencing to Yamaha OEM numbers 63V-W0078-01 and 63V-44301-00.

What are the package dimensions of the 18-3412 kit? The packaged kit measures 7.1 cm L x 11.5 cm W x 12.8 cm H.

Will the 18-3412 kit work on a Yamaha F15 outboard? Yes, the 18-3412 kit is designed to fit the Yamaha F15 (1998-05).

How many bolts are included in the 18-3412 water pump kit? The kit includes 4 bolts (O.E. #97095-08045-00) used to secure the water pump housing.

Where is the Sierra 18-3412 water pump kit made? The country of origin for the 18-3412 kit is Taiwan.

Does the 18-3412 kit fit both the 9.9 HP and 15 HP Yamaha outboards? Yes, a single 18-3412 kit is listed for both the Yamaha 9.9 HP (1996-09) and 15 HP (1996-09) applications, in addition to the F9.9, F15, and T9.9 models listed.