Sierra 18-7116 O-Ring - 0.360 in. ID x 0.100 in. Width, OMC Cobra, Mercury, Mercruiser Stern Drive
Sierra 18-7116 O-Ring - 0.360 in. ID x 0.100 in. Width, OMC Cobra, Mercury, Mercruiser Stern Drive
The Sierra 18-7116 is a rubber O-ring seal sized for stern drive and outboard applications where a precise, leak-free seal is required. It measures 0.360 inches (9.1mm) inside diameter by 0.100 inches (2.5mm) width, and is molded in black rubber for resistance to marine fuels, oils, and water exposure. Each package contains one O-ring.
This O-ring is used as a component seal on the OMC Cobra oil indicator with washer assembly (1986-93, without cone clutch), and is also cross-compatible across a range of Chrysler/Force, Johnson/Evinrude, OMC, Mercruiser, Mercury, and Volvo stern drive and outboard applications that call for this size and profile of seal. It is built to meet or exceed the fit and performance of the original equipment part it replaces, making it a reliable choice for maintenance, rebuilds, or as a replacement when an old or hardened O-ring is leaking or failing to hold pressure.
Specifications
- Brand: Sierra
- Manufacturer Part Number: 18-7116
- Material: Rubber
- Color: Black
- Nominal Inside Diameter: 0.360 inches (9.1mm)
- Width: 0.100 inches (2.5mm)
- Unit Count: 1 O-ring per package
- Weight: 0.01 pounds
Fitment
- OMC Cobra (1986-93), without cone clutch, as the O-ring used in the oil indicator with washer assembly
- Also compatible with Chrysler/Force, Johnson/Evinrude, OMC, Mercruiser, Mercury, and Volvo outboards and stern drives using this O-ring size
Replaces (OEM)
- Mallory 9-43631
- GLM 81100
- Johnson/Evinrude Outboard 303067
- Volvo Penta 3852045
- Chrysler/Force/US Marine 25-62704
- Chrysler/Force/US Marine 25-F24342
- Mercruiser Stern Drive 25-62704
- Mercruiser Stern Drive 802206
- OMC Stern Drive 303067
- OMC Stern Drive 3852045
- Mercury Marine 25-20633
- Mercury Marine 25-22174
- Mercury Marine 25-62704
- Mercury Marine 25-85148
- Mercury Marine 802206
Frequently Asked Questions
What size is the Sierra 18-7116 O-ring? The Sierra 18-7116 measures 0.360 inches (9.1mm) inside diameter by 0.100 inches (2.5mm) width.
What is the 18-7116 O-ring made of? It is molded in black rubber, suited to marine fuel, oil, and water exposure in stern drive and outboard applications.
Does the Sierra 18-7116 fit OMC Cobra stern drives? Yes, the 18-7116 is used in the OMC Cobra oil indicator with washer assembly on units built 1986-93 without a cone clutch.
Is the Sierra 18-7116 compatible with Mercury and Mercruiser units? Yes, this O-ring is compatible with Chrysler/Force, Johnson/Evinrude, OMC, Mercruiser, Mercury, and Volvo outboards and stern drives that use this seal size.
What OEM part numbers does the 18-7116 O-ring cross-reference? The 18-7116 is interchangeable with Mallory 9-43631, GLM 81100, Johnson/Evinrude Outboard 303067, Volvo Penta 3852045, Chrysler/Force/US Marine 25-62704 and 25-F24342, Mercruiser Stern Drive 25-62704 and 802206, OMC Stern Drive 303067 and 3852045, and Mercury Marine 25-20633, 25-22174, 25-62704, 25-85148, and 802206.
How many O-rings come in one package of Sierra 18-7116? One O-ring is included per package of the Sierra 18-7116.
How much does the Sierra 18-7116 O-ring weigh? It weighs 0.01 pounds.
Will a genuine Sierra 18-7116 perform the same as the original equipment O-ring? Yes, the 18-7116 is built to meet or exceed the fit and sealing performance of the original equipment O-ring it replaces.
When should I replace the O-ring on my stern drive oil indicator or fitting? Replace the seal, such as the Sierra 18-7116, when it appears hardened, cracked, or is no longer holding pressure or preventing leaks at the fitting it seats in.
What color is the Sierra 18-7116 O-ring? It is black rubber.