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18-2671 Lower Unit Seal Kit for OMC Cobra 2.3L 87-90, 3.0L 86-89 | SeaSierra

Regular price $43.23

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: 182671
  • Brand & Manufacturer: SeaSierra
  • Category: Drive Parts / Seal Kits, Oil Seals
  • Part Type: Lower Unit Seal Kit
  • Weight: 0.175
  • Dimensions:
    • Height: 1.4 inches
    • Depth: 7 inches
    • Width: 13.95 inches
  • Compatibility: Suitable for all 4-cylinder OMC Cobra engines (1986-1989)

Compatibility

This lower unit seal kit is compatible with the following engines:

  • 4 Cylinder OMC Cobra 2.3L (Ford based): 1987 - 1990
  • 4 Cylinder OMC Cobra 3.0L (GM based): 1986 - 1989

Kit Components

The kit includes the following components:

  1. Lower Unit Seal Kit (Part Number: 18-2671)
  2. Wiper Gasket (Part Number: 18-0190)
  3. Shift Cover Gasket (Priced Per Package of 2) (Part Number: 18-0880-9)
  4. Drain/Fill Plug Washer (Priced Per Package of 5) (Part Number: 18-4248-9)
  5. Grommet (Part Number: 18-0166)
  6. O-Ring (Priced Per Package of 5) (Part Number: 18-7145-9)
  7. O-Ring (Priced Per Package of 5) (Part Number: 18-7475-9)
  8. O-Ring (Priced Per Package of 5) (Part Number: 18-7137-9)
  9. O-Ring (Priced Per Package of 5) (Part Number: 18-7138-9)
  10. O-Ring (Part Number: 18-7127)
  11. O-Ring (Part Number: 18-7130)
  12. Oil Seal (Part Number: 18-2001)

Part Numbers and Replacements

  • Replaces OEM Part Numbers: 985612
  • Replaces Sierra Part Number: 18-2671
  • Replaces GLM Part Numbers: 47655

Additional Information

  • UPC: 030999312822
  • CASE PACKAGING: 1
  • STANDARD PACKAGING: 1
  • HSC: 401693
  • ECCN: 4016.93.1020
  • GLM: 87655
  • Mallory: 9-74401
  • OMC Stern Drive Part Numbers:
    • 984457
    • 985612

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