Sierra 18-5181 Ignition Coil

Sierra 18-5181 Ignition CoilSierra high-quality engine parts are designed to meet OEM specifications. Replacement ignition coil for Johnson/Evinrude and Mercury Outboards.Features:Primary Resistance: .09 10 ohmsSecondary Resistance: 10 15 ohmsInterchangeable with:GLM72100Johnson/Evinrude Outboard058299505844770580416058237005829310580971Mallory9-23102Mercury Marine802371A1802371Applications:3,4 HP 1950-19764 HP 1981-19895.5.5,6 HP 1950-19767.5 HP 1954-19589.5 Hp 1964-197310 HP 1949-196315,18,20,25 HP 1951-197228,30,33,35 Hp 1956-197040 hp 1960-1973Frequently Asked QuestionsWhat is the Sierra 18-5181 Ignition Coil used for?The Sierra 18-5181 Ignition Coil is a replacement ignition coil for Johnson/Evinrude and Mercury outboards. Sierra states that its high-quality engine parts are designed to meet OEM specifications.Which outboards is the Sierra 18-5181 Ignition Coil compatible with?The Sierra 18-5181 is listed for several Johnson/Evinrude outboard applications ranging from 3 to 40 HP, covering model years from 1949 through 1989 depending on horsepower. It is also listed for Mercury Marine applications. Verify the engine horsepower and model year against the application information before purchase.What are the resistance specifications for the Sierra 18-5181 Ignition Coil?The Sierra 18-5181 Ignition Coil has a listed primary resistance of 0.09 10 ohms and a secondary resistance of 10 15 ohms. These specifications can be used when checking whether the coil matches the requirements of the applicable outboard.What Johnson/Evinrude part numbers does the Sierra 18-5181 replace?The Sierra 18-5181 is interchangeable with Johnson/Evinrude part numbers 0582995, 0584477, 0580416, 0582370, 0582931, and 0580971. It is also listed as interchangeable with GLM 72100 and Mallory 9-23102.Is the Sierra 18-5181 Ignition Coil interchangeable with a Mercury Marine part?Yes. The product description lists Mercury Marine part numbers 802371A1 and 802371 as interchangeable with the Sierra 18-5181 Ignition Coil. Confirm the existing part number and your outboard’s application before selecting this replacement coil.//