Engineered Marine Products 26-00221-1 Quad Ring for MerCruiser Gearcases (Pack of 5)

The Engineered Marine Products 26-00221-1 is a high-quality quad ring seal designed specifically for MerCruiser sterndrive and inboard/outboard gearcase applications. This pack includes 5 replacement quad rings, providing excellent value for multiple service intervals or fleet maintenance.

Superior Sealing Technology:

Quad rings feature a four-lobed design that provides superior sealing performance compared to traditional O-rings. The unique profile creates four sealing surfaces instead of one, reducing the risk of leakage while requiring less squeeze for an effective seal. This design resists spiral failure and eliminates the tendency to roll or twist in the groove during dynamic applications.

Wide Compatibility:

• MerCruiser MC-1 gearcases
• MerCruiser R, MR, Alpha One, and Alpha One-SS drives
• Alpha Gen II sterndrives
• Bravo, Bravo X, Bravo XR, and Bravo XZ drives
• Vazer gearcases

OEM Cross-References:

Replaces Mercury/MerCruiser part numbers 26-45577, 26-455771, 26-45577B, and 26-45577B1. Also crosses to GLM 85140 and Sierra 18-2944, ensuring you're getting a quality replacement that meets or exceeds OEM specifications.

Performance Benefits:

• Lower friction than conventional O-rings for reduced wear and longer service life
• Enhanced sealing efficiency in both static and dynamic applications
• Built-in lubricant reservoir between lobes improves startup and operation
• Resistant to rolling and twisting during reciprocating movement
• Ideal for low-pressure gearcase sealing applications

Engineered Marine Products has been providing superior quality marine aftermarket products for over 40 years, offering reliable performance at competitive prices. These quad rings are manufactured to strict quality standards to ensure dependable sealing in demanding marine environments.