This OEM Mercury 2-Stroke Premium Plus TC-W3 Marine Engine Oil (1 Quart) is specifically formulated for high-performance 2-stroke outboard engines and Direct Fuel Injection (DFI) systems.
It provides superior lubrication, clean combustion, and excellent protection against carbon buildup and piston scuffing.
Mercury’s Premium Plus formula meets and exceeds NMMA TC-W3® certification standards, ensuring reliable operation in both freshwater and saltwater environments.
Replaces OEM part number 858026K01, offering a perfect fit and performance for Mercury and Mariner 2-stroke engines, including OptiMax, EFI, and carbureted models.
Product Features
- Manufacturer: Mercury Marine (OEM)
- Application: Mercury & Mariner 2-Stroke outboards, including OptiMax, EFI, and DFI systems
- Type: Premium Plus Marine Engine Oil
- Certification: NMMA TC-W3® Certified
- Size: 1 Quart (32 oz)
- Replaces OEM #: 858026K01
- Cross Reference #: 801881A12, 802824A1, 802824A40, 802824E1, 802824Q1, 857385A1, 858026E01, 858026KC1, 858026QB1, 858026QC1, 858026Q01, 883688A1
- Performance: Enhanced detergency to reduce smoke and carbon buildup
- Compatibility: Safe for oil-injected and pre-mix 2-stroke outboards
- Condition: 100% brand-new genuine Mercury OEM oil
- Warranty: Backed by Mercury Marine’s limited parts warranty
Additional Information
Note: Ideal for high-output 2-stroke engines that demand cleaner operation and higher film strength.
Premium Plus formulation ensures protection at all RPM ranges, preventing ring sticking and bearing wear.
Compatible with all outboards requiring TC-W3 certified oil — including Mercury, Mariner, and Force engines.
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 number to ensure proper fitment before ordering.
