HOLIDAY ALERT

We will be closing at 12 PM EST on Friday, April 18th, in observance of Good Friday and Easter.
Any orders placed after this time will be processed on Monday, April 21st.
Have a happy Easter weekend!

Weather Closure Alert

Due to severe weather, our White House, Tennesee location will be closed Wednesday the 19th.

All shipments from this location will resume on Thursday the 20th. Thank you for your patience!

WE WANT TO HEAR FROM YOU!

We strive to make improvements that make it easier to serve your boating needs.
We’d like to know more about you and how we can do the best job possible for you.
Please take the time to complete this brief 3-5 minute survey to help us serve you better.

FREE Ground Shipping on Orders over $100!  Exceptions apply - see details.

Toggle Nav
  • Sign In
  • Create an Account
My Cart
Search
Advanced Search
Menu
Account
Settings

21 Micron Fuel Water Separator Filter | Sierra 18-7789

Special Price $10.10 Regular Price $12.19
SKU
SIERRA-18-7789
Brand: Sierra

Show or Hide Price

Qty In Stock: 72 ⓘ
Shipping Icon
Add to Wish List

Replacement spin-on 21 micron fuel filter for a variety of marine engines including Volvo, OMC, Indmar and others.

main product photo
Substitute Products
  1. SX Drive 10 Micron Fuel/Water Separator Filter | Sierra 18-7989 Sierra | SIERRA-18-7989
    Brand :Sierra
    Qty In Stock: 96
  2. Spin-On Fuel Filter | Volvo Penta 3862228 Volvo Penta Marine Parts | VOLVO-3862228
    Brand :Volvo Penta
    Qty In Stock: 290
  3. Fuel Filter | Quicksilver 35-8M0154770
    Brand :Quicksilver
    Qty In Stock: 0
  4. Fuel Filter Ford 21 Micron | Indmar 636127
    Brand :Indmar
    Qty In Stock: 0
  5. 10 Micron Fuel Filter Assembly | Evinrude/Johnson 5012363
    Brand :Bombardier Recreational Products
    Qty In Stock: 55
  • Spin on fuel and water separating filter
  • Protects marine engines by filtering water and contaminants in the engine fuel supply
  • 21 micron rated filter
  • Used on many SX & SX Cobra EFI marine engines
  • Replaces OMC 502906, 3852413, 5009676
  • Replaces Volvo Penta 3851218, 3852413, 3862228
  • Replaces Indmar 636127
  • Replaces Mallory 9-37804
Specifications
More Information B2C
Manufacturer Part No. 18-7789
Brand Sierra
Shipping/Dimensional Weight 2.000000
Actual Weight 0.7
Availability In Stock
Application Johnson-Evinrude
Ships free when order qualifies Yes
Hazmat Fee No
Product Attachments

File(s)

Trustpilot

Sorry, is not an active item in our system. However, we may still be able to help you. Please email us at rajeshk@klizer.com or call us at (866)388-0390 for assistance. Please make sure to have the item number handy when you contact us.

Related Products
© 2026 Marine Parts Source. All Rights Reserved.