Your Cart

Sierra 18-2644 Upper Unit Seal Kit for MerCruiser Alpha One Gen II

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

18-2644
14 reviews
03/14/2036 8:51 AM
Sale Price

$33.50

In Stock (10+)

delivery box

Usually delivered within 2 days

Add To Cart

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-2644 is a comprehensive upper unit seal kit engineered specifically for MerCruiser Alpha One Generation II stern drives. This complete seal kit provides all the gaskets, o-rings, and seals needed to properly service the upper drive shaft housing on Gen II units with serial numbers 0D469859 and above.

Kit Includes:

  • (1) 18-2003 Oil Seal
  • (2) 18-2056 Oil Seals
  • (1) 18-2715 Check Valve Spring Kit
  • (1) 18-2944 Seal Ring Gasket
  • (1) 18-2945 Drain Screw Gasket
  • (1) 18-3289 Double Lip Seal
  • (2) 18-7103 O-Rings
  • (1) 18-7117 O-Ring
  • (1) 18-7161 O-Ring
  • (1) 18-7169 O-Ring
  • (1) 18-7188 Drain Screw O-Ring
  • (2) 18-7420 O-Rings
  • (1) Water Tube Seal

This kit directly replaces MerCruiser OEM part number 26-88397A1 and cross-references with GLM 87501 and Mallory 9-74302. Sierra marine parts are manufactured to meet or exceed original equipment specifications and are designed to withstand the demanding conditions of the marine environment.

Quick and easy

Notification from your company was a little slow

So Far Shopping Is Excellent!! Easy-Pesy!! Great Price on Yellow-Top Optima Battery. When I look for a Great Price On Parts,I look to Autolicity To Fill Those Needs!! Thx Again Friend's {wolfman}

All seemed to go great.

Very fast shipping and good cutomer service

very nice thanks

I would definitely order my auto parts from your shop again. I was impressed with the prices and the correspondence. Thanks!

Very quick and easy with PayPal..Bought here because they use PayPal

easy

they had the lowest price for the helmet i was looking at by more than $100. easy to order by phone and quick shipping. i already recomended them to a friend who also needs a new helmet. i will purchase from them again.

Great Price - Shipped the following day - Very please

Autoplicity cares about there customers. I ordered a flash programmer and got to the last page and never got a confirmation of the order. I used the website chat and talked to somebody about it right away. So I ordered again and got a conformation. But both went though. Autoplicity called me next day a.m. to see if I made a mistake. Thanks for letting me know and correcting to one order. Saved me from shipping back a product I dind't need.

Great place to shop online. The best price on the internet and super fast delivery. Shop with Autoplicity, highly recommended.

Price was unbeatable and the shipping was fast. Top notch reseller.

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy