Water Pump Kit w/housing 

Key Features:

• Yamaha 6H2-W0078-A0-00 + 663-44311-02-00 = 18-3408
• Same as 18-3429 but includes Water Pump Housing

Interchanges/Replaces

Yamaha Outboard

• 663-44311-02
• 6H3-W0078-00-00
• 6H3-W0078-01-00
• 6H3-W0078-A0-00

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0256	Yamaha Outboard 91290-08045-00 97095-08045-00 97290-08045-00 97370-08045-00 97395-08045-00	2	Bolt		N/A
18-0292	Mercury Marine 27-81417 27-81417M Yamaha Outboard 663-44315-00-00 663-44315-A0-00	1	Wear Plate to Pump Housing Gasket		N/A
18-0294	Mercury Marine 27-81421M Yamaha Outboard 663-44324-00-00 663-44324-A0-00	1	Wear Plate to Pump Base Gasket		N/A
18-3068	GLM 89900 Mallory 9-45601 9-45601-10 Yamaha Outboard 6H2-44352-00-00 6H2-44352-01-00 6H2-44352-02-00	1	Impeller		N/A
18-3297	Mercury Marine 28-97089M Yamaha Outboard 90280-03M03-00 90280-03M07-00	1	Impeller Key		N/A
18-3435	Mercury Marine 81419M Yamaha Outboard 663-44322-00-00	1	Insert Cup		N/A
18-3436	Mercury Marine 81420M Yamaha Outboard 663-44323-00-00	1	Wear Plate		N/A
18-99149	Mercury Marine 27-81418M Yamaha Outboard 663-44316-00-00 663-44316-A0-00	1	Water Pump Gasket		N/A
18-0297	Mallory 9-76413 Mercury Marine 26-82234M Yamaha Outboard 93101-23070-00	1	Oil Seal		N/A
NSS	Yamaha Outboard 6J8-44311-00-00	1	Housing, Water Pump	No Image	N/A
NSS	Yamaha Outboard 97395-08055-00	2	Bolt	No Image	N/A