OEM MERCURY Oil | Synthetic, Quart – Part #21681794. Factory-quality from U.S. Boatworks, helping boaters for over 40+ years.

FITS: 4-Stroke | 4-cylinder

This OEM MERCURY Oil | Synthetic, Quart is backed by U.S. Boatworks’s commitment to quality and customer service. We welcome DIY boaters and provide expert advice free of charge.

The OEM Advantage

• Engineered specifically for your MERCURY engine
• Marine-grade materials resist corrosion
• Proven reliability in harsh conditions

YOUR PARTS, OUR PRIORITY

• 2 million parts ready to ship
• Knowledgeable staff ready to help
• Call or text: 913-342-0011