My Account
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order

Sierra 118-99528 Gearcase Filler Replacement Valve

Manufacturer

Picture for manufacturer Sierra

Part Number

118-99528
8 reviews
Sale Price

$20.37

In Stock (6)

delivery box

Usually delivered within 2 days

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 118-99528 is a precision-engineered replacement valve designed for use with the 551-33-1 gearcase filler system. This critical component ensures proper fluid flow and pressure regulation during gearcase maintenance and servicing procedures on marine stern drives and lower units.

Key Features:

  • Direct replacement for OEM part number 551-33-1 gearcase filler valve
  • Precision-machined construction for reliable sealing and durability
  • Manufactured to original equipment specifications
  • Compatible with CDI Electronics 551-33VA
  • Designed for marine lower unit lubrication systems

This valve assembly is essential for routine gearcase oil changes and maintenance on compatible marine drive systems. Engineered to withstand the harsh marine environment and meet the demands of modern high-performance marine engines.

Awesome all around

Easy

No issues

Easy to order.

Picture does not necessarily represent the product, but if you know your part number and thmotorsports show they have it, the price is usually as good as it gets, and shipping is right on time! Definitely worth checking out thmotorsports!!

Awesome to work with. No delays. Product was perfect.

First off, the shipping was very quick! The battery was packaged very well. So, far so good. Just installed it in my SUV last night. Perfect fit! Thanks THMotorsports!

Yep perfect

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