This OEM Mercury MerCruiser 25W-40 4-Stroke Engine Oil (1 Quart) is engineered for maximum protection and performance in MerCruiser sterndrives and inboard engines.
Formulated with premium base oils and advanced additives, this exclusive 25W-40 blend provides exceptional lubrication, corrosion resistance, and thermal stability under high-load, high-temperature marine conditions.
Designed to meet Mercury’s proprietary FC-W® marine oil standards, it ensures superior protection against rust, oxidation, and bearing wear while maintaining viscosity integrity.
Replaces OEM part number 858048K01, and is the factory-recommended oil for all MerCruiser 4-Stroke and inboard applications.
Product Features
- Manufacturer: Mercury Marine (OEM)
- Application: MerCruiser sterndrives & inboard engines
- Type: 4-Stroke Marine Engine Oil (SAE 25W-40)
- Viscosity Grade: SAE 25W-40
- Certification: Exceeds NMMA FC-W® standards
- Size: 1 Quart (32 oz)
- OEM Part #: 858048K01
- Cross Reference #: 8M0078627
- Performance: Outstanding high-temperature protection and oxidation stability
- Condition: 100% brand-new genuine Mercury OEM oil
- Warranty: Covered by Mercury Marine’s limited parts warranty
Additional Information
Note: Recommended for MerCruiser sterndrives and inboards operating in high-load, high-RPM, or high-temperature marine environments.
Specifically formulated for marine-grade lubrication, resisting breakdown in moisture-rich conditions.
Compatible with all Mercury and MerCruiser 4-Stroke applications requiring SAE 25W-40 viscosity oil.
Shipping Information
SHIPPING: Additional shipping fees to Alaska, Hawaii, U.S. Territories, or international destinations will be calculated after checkout.
You will receive an email and a PayPal money request for the additional shipping charges at the email address provided.
(Some items are excluded from international shipping.)
Customer Support
For questions or to confirm compatibility, please email customerservice@marinepartswarehouse.com .
Please include your engine model or serial number to ensure proper oil selection before ordering.
