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Sierra 18-2732 MerCruiser Marine Water Shutter Exhaust Y-Pipe Mercury 807166A3

Sierra 18-2732 MerCruiser Marine Water Shutter Exhaust Y-Pipe Mercury 807166A3
Current Price: $33.45 Buy item on eBay
Time Left: 3 days 21 hours 32 min
Bids: 0
Location: Everett, Washington

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Item Information:

  • Brand: Sierra
  • Manufacturer Part Number: 18-2732
  • Warranty: Limited lifetime
  • Country/Region of Manufacture: China
  • Color: Black
  • Type: Water Shutter
  • Shipping Dimensions: 9" x 5" x 2"
  • Shipping Weight: 0.4 lbs
  • Item Weight: 0.3 lbs
  • Manufacturer: Sierra
  • Replaces: GLM 89170 Mallory 9-42802 Mercury 807166A3 14348A1 14348 14348A2
  • UPC: 808282124663
  • Part Number: 18-2732

Product Description

Sierra 18-2732 water shutter for MerCruiser marine sterndrive engines. Replaces Mercury marine parts number 807166A3, 14348A1, 14348, and 14348A2, Mallory 9-42802, and GLM 89170. Each purchase is for one water shutter. Purchase two for V6 and V8 applications.

Sierra Catalog
View the Sierra catalog for part numbers, descriptions, and fitment on over 6,000 marine parts. If you have an OEM or aftermarket part number you're trying to match, use Sierra SONAR to find the correct replacement. Looking for a different Sierra part than the one in this listing? Search for other Sierra items here.

Sierra Tech Support
If the part numbers and information above aren't enough to determine fitment, you can contact Sierra's Tech Support Line directly via email or phone.

Sierra Warranty
Sierra products are engineered to meet or exceed OEM standards, and stand up in harsh marine environments. Every new Sierra part comes with a limited lifetime warranty that covers the useful life of the product against any defects in workmanship and materials.

Shipping and Tracking

  • Items ship the same day if purchased on a business day before 10am Pacific Time.
  • Tracking is emailed to your eBay email address once an item ships (double-check your spam folder).
  • Faster shipping options are available in the "Shipping and payments" section on this page.
  • Business days are Monday to Friday, not including holidays.
  • Pickup is not available. All items must be shipped.


  • US Sales tax is charged to Washington state addresses only.
  • International buyers may have import duties/taxes (see below).

International Buyers

  • Items heading outside the USA cannot be used for military or government applications. The seller and marketplace expressly disclaim liability for misuse of its products.
  • Shipping prices shown do not include import taxes or customs duties. Contact your country's customs department for more information.
  • Items cannot be marked as gift or have a lowered value on the documentation. It is unlawful to forge international documents.

Warranty and Returns

This item has a Limited lifetime warranty covering any manufacturer defects. Defective items are generally replaced within a few business days, plus time in transit, and there will never be any extra cost to you.

For Lost Items, Damage, or Other Problems
If your item was damaged, incorrect, lost, or is missing parts, please send an eBay Message or Email right away. Describe the nature of the problem and its urgency (include pictures if possible). You will be taken care of as quickly as possible and there will never be any additional cost to you.

For Regular Returns
You may return an item if you no longer need it or don't want it anymore. Returns are accepted on items still in the same condition they arrived in. There may be a 10-15% restocking fee and all shipping costs must be covered by the buyer. To initiate a return, log in to eBay, go to your Purchase History, and use the Return link next to the transaction.

Frequently Asked Questions

Q: Who manufactures this item?
This item is manufactured by Sierra.

Q. What are the shipping dimensions and weight?
This item ships in a box approximately 9" x 5" x 2" and weighs approximately 0.4 lbs.


Please read the information above thoroughly before asking a question. Questions are answered Monday through Friday, 8am to 4pm PST. All correspondence must be via Email or eBay Message. Use the Ask a question button below to ask a question.

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