Sierra 18-5170 Ignition Coil, Cross-Reference OMC 583740, Fits Evinrude/Johnson 150-175 HP Outboards 1991-2006

The Sierra 18-5170 Ignition Coil is a direct replacement ignition coil built to meet or exceed original equipment quality for Evinrude/Johnson 150 HP and 175 HP outboard engines produced from 1991 to 2006. This engine family requires 3 coils per powerhead, and the 18-5170 is engineered as a drop-in match for that application, restoring correct spark output for reliable starting and smooth running.

Each coil is cross-referenced to GLM 72060, Evinrude/Johnson 0583740, Mallory 9-23104, and OMC 583740, so it can be ordered using any of those familiar part numbers. It uses a male-to-female connector and is available as a bolt-on or clip-in installation depending on the engine's mounting configuration. Compact at just 0.39 x 0.39 x 0.39 inches and 0.77 pounds, the 18-5170 is a straightforward maintenance-item replacement for anyone servicing an aging outboard ignition system.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-5170
• Fitment: Evinrude/Johnson 150 HP (1991-2006) and 175 HP (1991-2006)
• Coils Required Per Engine: 3
• Item Dimensions: 0.39 x 0.39 x 0.39 inches
• Weight: 0.77 pounds
• Connector Gender: Male-to-Female
• Installation Type: Bolt-On or Clip-In
• OEM Cross Reference: GLM 72060, Evinrude/Johnson 0583740, Mallory 9-23104, OMC 583740

Fitment

• Evinrude/Johnson 150 HP, 1991-2006
• Evinrude/Johnson 175 HP, 1991-2006

Replaces (OEM)

• GLM 72060
• Evinrude/Johnson 0583740
• Mallory 9-23104
• OMC 583740

Frequently Asked Questions

What does the Sierra 18-5170 ignition coil fit? The Sierra 18-5170 is built for Evinrude/Johnson 150 HP outboards from 1991 to 2006 and 175 HP outboards from 1991 to 2006.

How many of these coils does my engine need? Evinrude/Johnson 150 HP and 175 HP engines covered by the 18-5170 each require 3 coils per powerhead, so most owners replace them as a set.

Is the Sierra 18-5170 the same as OMC 583740? Yes, the 18-5170 is cross-referenced to OMC 583740 as well as Evinrude/Johnson 0583740, GLM 72060, and Mallory 9-23104, so any of those numbers point to the same coil.

What are the dimensions of this ignition coil? The Sierra 18-5170 measures 0.39 x 0.39 x 0.39 inches and weighs 0.77 pounds.

What type of connector does the 18-5170 use? It uses a male-to-female connector configuration for its wiring connection.

Is this a genuine OEM coil or an aftermarket replacement? The Sierra 18-5170 is an aftermarket replacement coil manufactured to meet or exceed the quality of the original equipment part it replaces.

How is the 18-5170 installed? Depending on the engine setup, the Sierra 18-5170 installs as either a bolt-on or clip-in component.

Will the 18-5170 work on a 175 HP Evinrude from the late 1970s? No. The 18-5170 is specified for 175 HP applications from 1991 to 2006; earlier 175 HP model years use different Sierra coil part numbers.

What comes in the box with the 18-5170? Each order includes one Sierra 18-5170 ignition coil.

Can the 18-5170 replace a Mallory 9-23104 coil? Yes, the Sierra 18-5170 is cross-referenced to the Mallory 9-23104 and can be used as a direct equivalent.