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Sierra 18-1730 Marine Water Pump Coupling for Mercury Outboards

Manufacturer

Picture for manufacturer Sierra

Part Number

18-1730
11 reviews
Sale Price

$28.00

3 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

Product Details

The Sierra 18-1730 is a replacement water pump coupling designed for Mercury and Mariner outboard motors as well as MerCruiser stern drive engines. This coupling is a key component in the outboard cooling system, connecting water pump assembly sections to maintain proper coolant flow and protect the engine from overheating.

Manufactured by Sierra International, this coupling meets or exceeds OEM specifications, making it a reliable direct replacement for the original Mercury Marine part. It is also a component found in Sierra's upper water pump repair kits, making it a popular standalone service part during water pump rebuilds.

Key Features:

  • Sierra aftermarket part engineered to meet or exceed OEM requirements
  • Replaces Mercury Marine OEM part number 43585
  • Compatible with Mercury, Mariner, Chrysler/Force/US Marine outboards and MerCruiser stern drives
  • Essential component for water pump cooling system maintenance and rebuild
  • Durable construction suitable for freshwater and saltwater marine environments

The Sierra 18-1730 coupling is an ideal replacement during routine water pump service or impeller replacement intervals to ensure the integrity of the entire cooling system assembly.

It would be helpful if you could add an estimated delivery date next to each delivery method

Thanks for the Shipping Discount !

great prices

Quick and painless!

Quick easy, save money and fast shipping

prices are definitely cheaper than everyone else for the part I ordered. Arrived very quickly also.

So far I have nothing negative to report

No estimate on when the part will be shipped.

So far very easy!

Lowest price anywhere on EBC brakes, got front and rear sets for 2011 Camaro SS for the price of just the fronts anywhere else, and that is with shipping included! Now I know why the other guy had "free shipping" just added it plus some to the cost of the parts! Now don't get me started on UPS though, but that isn't the vendors fault fedex is just as bad and DHL died.

Great variety of products offered. Quick shipping.

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