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Sierra 18-3109 Marine Water Tube Guide for MerCruiser Sterndrive

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

18-3109
14 reviews
03/13/2036 3:42 AM
Sale Price

$6.28

In Stock (5)

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Usually delivered within 2 days

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Product Details

The Sierra 18-3109 Marine Water Tube Guide is a precision-engineered replacement component designed for MerCruiser and Mercury sterndrive applications. This essential water pump component guides the water tube through the drive unit housing, ensuring proper water flow for engine cooling.

Key Features:

  • Designed to meet or exceed OEM specifications for reliable performance
  • Compatible with MerCruiser MC-I, R, MR, and Alpha One sterndrive units
  • Used in conjunction with Sierra 18-3116 water pump housing
  • Replaces multiple OEM part numbers for broad application coverage

Replaces OEM Part Numbers:

  • Mercury/MerCruiser: 23-29804, 23-29804T, 23-52928
  • GLM: 12820
  • Mallory: 9-45623

Sierra Marine products are built with precision and engineered to deliver dependable performance in demanding marine environments. This water tube guide is an essential component for maintaining proper water pump operation and preventing overheating in your sterndrive system.

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so far so good

Best prices, fast shipping, good service. Thank you!

great prices, good communication (rec'd email with fed ex tracking info), and quick delivery. thank you, i'll definitely be back!

Fast and easy. Love the PayPal option.

Best price.

Products looks great. Have not had a chance to check fit yet

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Autoplicity has great prices on all your car modification needs.

good

it was pretty easy. quick and simple.

Very easy to place order

Autoplicity offered the best internet price, and utilized Paypal for guaranteed customer service. Shipping tracking through UPS is accurate and customer focused. I'm very pleased with the retail experience, and will use Autoplicity on future orders and best prices.

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