My Account
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order

Sierra 18-2381 Upper Drive Unit Cap for Mercruiser Alpha I Stern Drive

Manufacturer

Picture for manufacturer Sierra

Part Number

18-2381
10 reviews
Sale Price

$118.40

1 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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 18-2381 Upper Drive Unit Cap is a quality aftermarket replacement cover designed for MerCruiser Alpha I stern drives. It directly replaces worn or damaged OEM upper drive unit caps to help maintain a properly sealed and protected upper drive assembly.

Key Features:

  • Direct OEM replacement for MerCruiser upper drive unit caps
  • Replaces Mercury Marine OEM part numbers 94998A2 and 94998A4
  • Also interchangeable with GLM 28400, Mallory 9-78121, Mercruiser 94998A1, and 94998A3
  • Fits MerCruiser Alpha I stern drives (S/N 6225577 and later), except Gen II
  • Meets or exceeds original equipment specifications
  • Backed by Sierra's comprehensive customer satisfaction warranty covering parts and labor

OEM Cross-Reference: Mercury Marine 94998A2, 94998A4, 94998A1, 94998A3 | GLM 28400 | Mallory 9-78121

Sierra International is the marine industry's leading supplier of aftermarket engine parts, offering products that cover every major engine brand. The 18-2381 is a reliable, cost-effective solution for restoring the integrity of your MerCruiser Alpha I upper drive unit.

Awesome prices

Shopping was easy

way cheaper than everywhere else. Lets hope the product is good!

Excellent Service. Fast service. Very fast delivery and item was exactly as advertised.

Overall good experience. First time ordering from you guys so im eager to see how it goes.

Great

I found autoplicity had the best price for the K&N cold air intake I was looking for my 03 MACH1. The shipping was extremely fast and I received a email notification with the tracking number. I recommend autoplicity to all looking for a great deal.

Ordered a strut before, seems like a good site, just that their shipping doesnt update on their site well. called and they got me a tracking number

Smooth

The listing seemed clear and informative. So far so good ;)

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