My Account
Shopping Cart

Sierra 18-2452 Complete Upper Unit Assembly 1.84:1 & 1.81:1 Ratio

Manufacturer

Part Number

18-2452
Sale Price

$1,576.07

1 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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 18-2452 Complete Upper Unit Assembly (also called a sterndrive upper gearcase or drive upper unit) is a complete replacement upper unit for a marine stern drive. It is built for the 1.84:1 and 1.81:1 gear ratios and is made to withstand harsh marine environments.

Key Features:

  • Complete upper unit assembly designed to fit 1.84:1 and 1.81:1 gear ratios
  • Sierra states that it meets or exceeds the original equipment part it replaces
  • Gears are built from proven components that passed a 300-hour endurance test
  • Each unit is pressure and vacuum tested, with quality control checks during manufacturing

Cross-References:

  • Mercury Marine / Mercruiser: 1547-9412A22, 1547-5523A49, 1547-5523A67, 1547-8265A17, 1547-9412A36
  • GLM: 19300

This assembly suits a stern drive rebuild or repower that needs a complete upper unit rather than individual internal parts.

So far so good

ill tell you when i get the product

Your site is kind of a pain to navigate, every thing else was good

Great price on my item. Order placed and shipped from manufacturer very quickly. Anxiously awaiting delivery.

Ordered a Dee Zee bed mat for my truck. Got it right away and it fits like a glove!!!

Easy to use site; and easily find products and product details.

Very, very good price on an item that I have been wanting for a very long time. I'll be sure to check here first when shopping for an item of interest! Thanks.

Easy mobile site. Chose 2nd day air. Would love if handling time was 1 business day. We shall see!

Great selection

By far the best price I found on a Bak flip bed cover! Shipped the next day, although I did have to call to get the tracking number. However, customer service was very nice and emailed me the tracking number immediately. I will do business here again!

good

Easy and effective searching tool

well so far

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