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18-2652 Lower Unit Seal Kit for Mercruiser R MR Alpha One Gen 1 Only | Sea Sierra

Regular price $37.99

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: 182652
  • Category: Drive Parts / Seal Kits, Oil Seals
  • Part Type: Lower Unit Seal Kit
  • Weight: 0.2851
  • Height: 5.9001 inches
  • Depth: 1.3001 inches
  • Width: 6.6501 inches
  • Unit of Measure: Each
  • Item Status: Available
  • UPC: 030999312631

Compatibility

  • Fits Mercruiser R / MR / Alpha One (Gen 1 Only) from 1972 to 1990
  • Replaces OEM Part Numbers: 26-33144A2, 18-2652
  • New Designed Shift Shaft Bushing Assembly

Kit Components

The package includes the following components suitable for various engine horsepower ranges:

  • Neoprene Impeller
  • Housing
  • Shift Shaft Bushing Assembly
  • Gasket, Gear Housing Flushing Screw
  • Drain Screw Gasket (Priced Per Package of 2)
  • Gasket, Water Pump (Priced Per Package of 2)
  • Gasket, Water Pump Base (Priced Per Package of 2)
  • Seal Ring (Priced Per Package of 2)
  • Shift Shaft Washer (Priced Per Package of 5)
  • Rubber Washer (Priced Per Package of 5)
  • O-Ring (Priced Per Package of 5)
  • O-Ring (Priced Per Package of 2)
  • Oil Seal
  • Oil Seal
  • Oil Seal
  • Oil Seal
  • Oil Seal
  • Oil Seal
  • Shift Shaft Housing Bushing

Additional Information

  • This kit is designed for Mercruiser R, MR, and Alpha One (Gen 1 Only) models produced from 1972 to 1990.
  • It replaces OEM Part Numbers 26-33144A2 and 18-2652.
  • The kit includes a new designed Shift Shaft Bushing Assembly.
  • Sea Sierra is a trusted brand known for quality replacement parts.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • JCB
  • Maestro
  • Mastercard
  • PayPal
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.