Sierra 18-7113-9 Marine O-Ring Pack of 10

The Sierra International 18-7113-9 is a marine-grade O-ring sold in a convenient pack of 10. Engineered by Sierra International — a SeaStar Solutions brand and one of the most trusted names in marine engine replacement parts — these O-rings are designed to meet or exceed the original equipment specifications they replace.

Marine O-rings serve as critical sealing components in outboard, inboard, and stern drive engine applications, preventing the passage of fluids and gases between mating surfaces. Proper O-ring replacement is essential during engine service, lower unit rebuilds, and powerhead maintenance to ensure reliable, leak-free operation.

Key Features:

• Pack of 10 O-rings for multiple service jobs or fleet maintenance
• Manufactured to meet or exceed OEM quality standards
• Constructed from marine-grade materials resistant to fuel, oil, and saltwater exposure
• Consistent sizing ensures a reliable seal every time
• Backed by Sierra International's reputation for quality marine replacement parts

Sierra's 18-7113 series O-ring is part of a comprehensive line of marine sealing products designed for compatibility with popular engine platforms including Mercury, MerCruiser, Johnson/Evinrude, OMC, and others. The bulk pack of 10 makes this an economical choice for marine technicians and boat owners performing routine maintenance or major engine service.