Designed for American Waters and Weather

Quality U.S. and Imported Marine Parts Built to Last!

Sierra Marine (MW)
118-9440CAT-2

Sierra 25W-40 4-Stroke Synthetic Catalyst Marine Oil - (MW)

SKU SIE-18-9440CAT-2 MPN 118-9440CAT-2 UPC 808282326029 MFR Sierra Marine (MW)

Express
Toronto, ON Vancouver, BC NJ, Warehouse FL, Warehouse
"Express" items are automated and typically shipped out the next available business day and delivered within 4 days.
In Stock 38 available
$11.89
My Wishlist
Compare

Sierra 25W-40 4-Stroke Synthetic Catalyst-Compatible Marine Oil

This Sierra Synthetic Blend Engine Oil meets modern recreational 4-stroke engines with or without emission catalyst systems. 

Features:

  • Minimizes corrosion that is formed inside the engine.
  • Displays enhanced detergent properties to suspend and prevent engine sludge formation.
  • Industry leading wear protection and deposit control.
  • Prevents excessive thinning under extreme performance operations.
  • Capitalizing on "ZDDP" anti-wear additive technology.
  • Prevents phosphorous depletion and extends the emission catalyst life.
  • NMMA FC-W Certified/API-SL

Interchangeable with:

How much oil does my engine need?

It varies model to model, check out our Engine Oil Capacity Guide for more information and capacity charts!

WARNING: Cancer and Reproductive Harm - P65Warnings.ca.gov

Product Specifications

Dimensions14.0000" L × 14.0000" W × 14.0000" H
Shipping Weight1 lb
Liberty Marine USA Logo
Proudly serving customers across United States & Canada with Marine, RV parts and accessories.

Shipping Warehouse Locations:
New Jersey, USA
Florida, USA

About Us

LibertyMarineUSA supplies marine and RV parts and accessories from trusted U.S. manufacturers and proven, quality-approved imported manufacturers. We focus on dependable, quality-tested products from reliable sources, so you can maintain, repair, and outfit your boat or RV with confidence.

Our goal is simple: to deliver the best quality marine parts you can count on. We focus on dependable service, fast shipping, and proven products that are either American-made or American-tested and approved for quality and reliability.