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Seastar Solutions products are designed to withstand the harsh marine environment while meeting today's high horsepower engine demands. Seastar products meet or exceed the specifications of the original equipment part they replace. This Universal fuel tester, model number 18-79816, is one of their product. It is composed of high-quality materials and will last you for years. Designed using state-of-the-art technology with more details on and with the client in mind. Deliver exceptionally quality at a reasonable cost and satisfy your needs. California Residents: WARNING-Cancer and Reproductive Harm Visit this website for more info -

Key Features:

  • The Sierra 18-79816 Fuel Tester measures the alcohol content of your fuel to determine its quality.
  • Made from the finest materials
  • Ethanol Fuel Tester
  • It determines the amount of ethanol in gasoline.
  • Replaces Mercury 91-879172T28
  • Replaces Mallory 9-79816


  • Brand: SeaStar Solutions
  • SKU: 18-79816
  • Weight: 0.05 lbs
  • Fit type: Universal Fit

Replaces: Mercury 91-879172T28 For: Tests quality of fuel by measuring alcohol content.

This product replaces:

    47-79816, 808282336202, 18-79816, 9-79816

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ProPride 3P Hitch, Hassle Free, 60-Day No Risk Guarantee

You can return the 3P Hitch at any time during the first 60 days of use for a complete refund. That's a 100% risk free guarantee. 60 days begins when you receive the product unless otherwise arranged for a later date. We must receive the product in Holly, MI in 60 days or less. To initiate a return you can contact us for a return merchandise authorization. If the hitch was purchased during a FREE shipping promotion, $299 will be deducted for any returned hitches.


We can ship to virtually any address in the Continental US. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.)

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.

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