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18-2648 Seal Kit for Mercury Mercruiser Sterndrive SSM/R/MR/Alpha One SS | SeaSierra

Regular price $22.98

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: 182648
  • Brand & Manufacturer: SeaSierra
  • Category: Drive Parts / Seal Kits, Oil Seals
  • Part Type: Upper Unit Seal Kit
  • Item Weight: 0.175
  • Package Dimensions: HEIGHT: 0.9, DEPTH: 6.8, WIDTH: 5.9

Compatibility

This kit is compatible with the following models:

  • 120/140 (1978-1982)
  • 165 (1978-1981)
  • 228 (1978-1982)
  • 470 (1978-1982)
  • 485 (1980-1982)
  • 898 (1978-1982)
  • ALPHA-ONE SS (1986-1989)
  • SSM II/III/IV/V (1982-1995)
  • R/MR/ALPHA ONE (Sterndrive) (1983-1990)
  • R/MR/ALPHA ONE (Transom Assembly) (1983-1990)

Part Numbers and Replacements

  • Replaces OEM Part Numbers: 26-32511A1, 26-32511B1
  • Replaces Sierra Part Number: 18-2648
  • GLM Part Number: 87500
  • Mallory Number: 9-74303
  • Other Replaced Part Numbers: Mercury Number: 32511A1

Kit Components

The package includes:

  1. Upper Unit Seal Kit for Sterndrive
  2. Drain Screw Gasket (Priced Per Pkg of 2) - 18-2945-9
  3. Gasket, Water Pocket Cover (Priced Per Pkg of 2) - 18-0894-9
  4. Seal Ring (Priced Per Pkg of 2) - 18-2944-9
  5. O-Ring (Priced Per Pkg of 5) - 18-7169-9, 18-7161-9, 18-7153-9, 18-7445
  6. Water Pump Housing Bushing - 18-3110
  7. Oil Seal - 18-2003, 18-2056, 18-2049
  8. Water Tube Rubber Seal - 18-0521

Additional Information

  • UPC: 030999755810
  • CASE PACKAGING: 1
  • STANDARD PACKAGING: 1
  • HSC: 401693
  • ECCN: 4016.93.1020
  • UNIT OF MEASURE: EA
  • ITEM STATUS: A

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