Seal It Right, Keep It Tight

A reliable seal is the difference between smooth sailing and unexpected downtime. The Mercury Quad Ring (25-20295) is designed to keep cooling systems and critical engine components leak-free, ensuring your marine engine runs at peak efficiency. Unlike standard O-rings, this quad-ring design provides superior sealing, reducing wear and extending the life of your engine’s vital systems.

Built for Performance

• Engineered with high-quality materials to withstand extreme temperatures, pressure, and exposure to fuel and coolant.
• Quad-ring profile offers a more secure seal than traditional O-rings, minimizing the risk of leaks in key areas.
• Designed for exact fitment in select Mercury and MerCruiser engine models, eliminating guesswork during installation.

Where It’s Used

• Essential for cooling system maintenance, keeping fluid pathways properly sealed.
• Ideal for engine overhauls, ensuring all seals are fresh and functioning at their best.
• Compatible with multiple Mercury inboard and sterndrive models, including 8.2L Inboard EC, 520 EFI, and 700 SCi.

When it comes to engine maintenance, small components like this make a big impact. If your system shows signs of wear, replacing the quad ring can help prevent costly repairs and keep your engine running strong.