Sierra 18-5141 Contact Set, OEM OMC 581207 Equivalent, for Johnson/Evinrude Outboard Motors

The Sierra 18-5141 Contact Set is a replacement ignition breaker point set for Johnson/Evinrude outboard motors, used to restore correct ignition timing and spark output as the original points wear from use. Each package includes one contact set, sized to fit the engine's breaker plate in place of the original equipment contacts. Sierra manufactures this part to meet or exceed the specification of the original equipment part it replaces, making it a straightforward drop-in service item during a routine tune-up rather than a modified or universal-fit substitute.

This contact set is designed for use alongside a matching condenser and is intended to be paired with Sierra's tune-up kit for a complete ignition service. It is built for outboard engines running on gasoline and covers engines up to 40 horsepower. Because ignition points are a wear item, replacing them at the recommended service interval helps maintain reliable starting and smooth running on older Johnson/Evinrude outboards.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-5141
• Product Type: Contact Set
• OEM Equivalent Part Number: OMC 581207
• Interchange Part Number: GLM 70200
• UPC: 030999237026
• Engine Type: Outboard
• Fuel Type: Gasoline
• Maximum Horsepower: 40 Horsepower
• Unit Count: 1 contact set per package
• Weight: 0.03 pounds
• Warranty: 90 days

Fitment

• Johnson/Evinrude 9.9 HP (1974-1976)
• Johnson/Evinrude 15 HP (1974-1976)
• Johnson/Evinrude 35 HP (1976)
• Johnson/Evinrude 40 HP (1974-1976)
• Johnson/Evinrude 40 Comm (1981-1983)

Replaces (OEM)

• OMC 581207
• GLM 70200
• 0581207

Frequently Asked Questions

What engines does the Sierra 18-5141 contact set fit? The Sierra 18-5141 is designed for Johnson/Evinrude 9.9 HP (1974-1976), 15 HP (1974-1976), 35 HP (1976), 40 HP (1974-1976), and 40 Comm (1981-1983) outboard motors.

Is the 18-5141 the same as OMC 581207? Yes, the Sierra 18-5141 is the OEM equivalent of OMC 581207 and is built to meet or exceed the original equipment part's specification.

Does this cross with a GLM part number? Yes, the Sierra 18-5141 contact set is interchangeable with GLM 70200.

How many contact sets come in a package? One contact set is included per package of the Sierra 18-5141.

What is the weight of the Sierra 18-5141 contact set? This contact set weighs 0.03 pounds.

Do I need anything else besides the contact set for a tune-up? The Sierra 18-5141 contact set is intended to be used with Sierra's matching tune-up kit, which supplies the condenser and other components needed for a complete ignition service.

Is this a genuine Sierra part or a generic aftermarket copy? The 18-5141 is a genuine Sierra-manufactured contact set, produced to meet or exceed the original equipment part it replaces rather than being a generic substitute.

What fuel type and engine type is this contact set made for? The Sierra 18-5141 is made for gasoline-fueled outboard engines, covering applications up to 40 horsepower.

Is there a warranty on the 18-5141 contact set? The Sierra 18-5141 contact set carries a 90-day manufacturer warranty.

Will this contact set work on a 40 Comm outboard? Yes, the Sierra 18-5141 is listed for the Johnson/Evinrude 40 Comm (1981-1983) outboard, in addition to the 9.9, 15, 35, and 40 HP models listed.