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FLASHSALE26

18-2627 Lower Unit Seal Kit for Mercury/Mariner Outboard Motor | SeaSierra

Sale price $98.99 Regular price $120.00

Worry-free returns

Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.


If the return is due to our error or a defective item, we’ll make it right.


Please contact us before returning any item.

Delivery and Shipping

Orders are typically processed within 1–2 business days.


U.S. orders usually arrive within 6–15 days, depending on stock location and destination.


International delivery times may vary due to customs processing.


Tracking information will be provided once your order ships.

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

  • SKU: 182627
  • Brand & Manufacturer: SeaSierra
  • Category: Drive Parts / Seal Kits, Oil Seals
  • Part Type: Lower Unit Seal Kit
  • Item Weight: 0.0951
  • Package Dimensions:
    • Height: 6.8001 inches
    • Width: 5.9001 inches
    • Depth: 1.0001 inches
  • UPC: 808282243692
  • Item Status: A
  • Unit of Measure: EA
  • Case Packaging: 1
  • Standard Packaging: 1
  • HSC: 401693
  • ECCN: 4016.93.1020

Compatibility

This kit is designed for Mercury/Mariner engines and is specifically compatible with all 20 Hp engines with serial numbers ranging from 4709593 to 6443972.

Part Numbers and Replacements

  • Replaces OEM Part Numbers: 26-66303A1
  • Replaces GLM Part Number: 87573
  • Replaces Mercury Marine Part Number: 26-66303A1

Kit Components

The package includes the following items:

  1. Water Tube Seal (NSS)
  2. Gasket (NSS)
  3. Drain Screw Gasket (Priced Per Pkg of 2) (18-2945-9)
  4. Gasket, Water Pump (Priced Per Pkg of 2) (18-2827-9)
  5. Lower Water Pump Gasket (18-2828)
  6. Washer (18-4261)
  7. O-Ring (Priced Per Pkg of 5) (18-7163-9, 18-7180-9, 18-7164-9)
  8. O-Ring (18-7120)
  9. Oil Seal (18-2019, 18-2004, 18-2006, 18-0595)

Additional Information

  • Each SeaSierra product meets or exceeds the original equipment part it replaces.
  • Please note that Mercury/Mariner motors DO NOT go by the year they were produced. It's essential to check all available information to match your engine to the correct part.

Payment & Security

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