Water Pump Impeller Repair Kit with Housing for Yamaha 40HP 50HP 2-Stroke | Replaces 6H4-W0078 & 663-44311-02

Description:
Complete water pump impeller repair kit including the pump housing — suitable for Yamaha 40HP and 50HP 2-stroke outboards. This kit is perfect for full cooling system service or repair.

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 Numbers:

6H4-W0078
663-44311-02 (housing)
(OEM numbers used for reference only — this is a compatible high-quality aftermarket replacement)

Kit Includes:

1 x Impeller (Neoprene) – 6H4-44352-02
1 x Water Pump Housing – 663-44311-02
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 Bolts with Washers – 97080-08055-00
2 x Bolts with Washers – 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?

High-quality marine-grade aftermarket parts
Designed to match original OEM fit and function
UK-based stock for fast dispatch
Same-day shipping for orders placed before 1 PM
Collection available from our Leigh, Manchester unit
VAT invoice available on request
Friendly technical support if you're unsure about fitment

40HP 50HP Water Pump Impeller Repair Kit incl Housing for Yamaha 2-Stroke Outboards