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Mercury Mariner 75-200hp 4/6 Cylinder Water Pump Kit (OSWK784)

Genuine Part # : 46-96148A8, 46-32437A3, 46-78400A2, 18-3316

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  • 1 YEAR


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This part replaces part #: 46-78400A2, 46-96148A8, 46-32437A3, 18-3316.

This part suits the following engines: Mercury Mariner 75-85hp Inline 4 cylinder, Mercury Mariner 90-150 Inline 6 cylinder SER:4394236 and UP (Not all 150hp models), Mercury Mariner 135-150hp V6 SER: 904646 and UP, Mercury Mariner 175hp V6 SER: 4301235 and UP,  Mercury Mariner 200hp V6 SER: 6625221 and UP (2.0-2.5 litre gearboxes) .


About The Brand

Outboard Spares brand of parts are tested in Australia's harsh marine environment with a focus on quality and durability. Outboard Spares parts are used by professional fishermen who depend on their parts to stay on the water and in business. So next time you service your engine choose what the professionals use, choose Outboard Spares.

Standard Shipping is FREE on all orders or Express Shipping is $10 flat rate.

Oils & Lubricants can only be sent via Standard Shipping.

Pick up is available from our warehouse at 1/84 Brunel Road, Seaford VIC 3198 between the hours of 8:30am to 3:30pm weekdays. You will be notified by email when your order is ready for pick up.

Delivery Time

Orders are dispatched same business day if ordered before 3:00pm AEDT. All orders are dispatched from Melbourne, Victoria and are sent via Australia Post.

For delivery time estimates with Australia Post please use their delivery calculator here:

If you have any questions relating to shipping, please contact us by emailing

Mercury 170-200hp water pump

By: on 20 February 2022
Excellent quality,fast delivery very happy high recommended

Mariner 115 tower water pump kit

By: on 21 January 2021
This is a full comprehensive kit. The parts supplied were great quality and now finally after two years my engine runs at the correct temp


By: on 3 January 2020
Excellent service

135hp mercury pump kit

By: on 20 February 2019
Great service , Quick delivery , all parts fitted perfect . Great value for money

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