Water Pump Impeller Repair Kit for Yamaha 40HP 50HP 2-Stroke Outboard | Replaces 6H4-W0078

Description:
Complete water pump impeller repair kit designed for Yamaha 2-stroke outboard motors. Ideal for restoring proper cooling and maintaining engine performance.

Fits Yamaha 2-Stroke Outboards:

40 HP (1984–1994)
50 HP (1984–1994)
PRO 50 HP (1987–1994)
P50 HP (1991–1993)
(40H and 50D models)

Replaces Yamaha Part Number:

6H4-W0078
(OEM number used for reference only — compatible high-quality aftermarket replacement)

Kit Includes:

1 x Neoprene Impeller (6H4-44352-02)
1 x Cartridge Insert (663-44322-00)
1 x Outer Plate (663-44323-00)
1 x Damper Water Seal (663-44366-00)
1 x Woodruff Key (90280-03024-00)
2 x Bolt with Washer (97080-08055-00)
2 x Bolt with Washer (97080-08045-00)
1 x Cartridge Gasket (663-44324-A0)
1 x Water Pump Gasket (663-44315-A0)
1 x Water Pump Gasket (663-44316-A0)

Why Buy from SSI Marine?

Marine-grade aftermarket parts
Designed to match OEM fit and function
UK-based stock for fast dispatch
Same-day shipping for orders before 1 PM
Collection available from our Leigh, Manchester workshop
VAT receipt available on request
Friendly technical support available — message us if unsure about compatibility

40HP 50HP 2-Stroke Outboard Water Pump Impeller Repair Kit for Yamaha | Replaces 6H4-W0078-01