Sierra Digital Optical Power Pack for OMC 6-Cylinder Outboard Engines - 18-99296

The Sierra 18-99296 is a digital optical power pack built for OMC 6-cylinder outboard engines. As the ignition power module, it manages spark timing and delivers the high-voltage output the ignition coils need to fire correctly across all six cylinders, making it a core component for restoring reliable starting and smooth running on engines with a failing or intermittent ignition module. Using a digital optical design gives the unit precise timing signal detection compared to older mechanical trigger systems, which helps maintain consistent performance as the engine ages.

This power pack is cataloged under Sierra's Evinrude Outboard Power Packs line, confirming its application to Johnson/Evinrude OMC 6-cylinder outboard powerheads. It is a direct fit replacement component intended to be swapped in place of the original ignition power pack on the applicable 6-cylinder OMC engine.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-99296
• Product Category: Evinrude Outboard Power Packs
• Engine Application: OMC 6-cylinder outboard engines
• Ignition Type: Digital optical power pack
• Weight: 1.9 pounds
• UPC: 808282395889

Fitment

Designed for OMC 6-cylinder outboard engines within Sierra's Johnson/Evinrude power pack line.

Frequently Asked Questions

What engines does the Sierra 18-99296 power pack fit? The Sierra 18-99296 is built for OMC 6-cylinder outboard engines in the Johnson/Evinrude line.

Is the 18-99296 a digital or analog power pack? It is a digital optical power pack, using an optical timing design rather than an older mechanical trigger system.

How much does the 18-99296 power pack weigh? This power pack weighs 1.9 pounds.

What is the UPC for the Sierra 18-99296? The UPC for the Sierra 18-99296 power pack is 808282395889.

What does a power pack do on an outboard engine? On an OMC 6-cylinder outboard, the power pack is the ignition module that times and delivers the high-voltage output needed to fire each cylinder's spark plug.

Is the 18-99296 sold under the Evinrude brand? No, it is sold as Sierra part number 18-99296, cataloged in Sierra's Evinrude Outboard Power Packs category for OMC 6-cylinder applications.

Will the 18-99296 work on a 4-cylinder OMC engine? No, the 18-99296 is designated specifically for OMC 6-cylinder outboard engines, not 4-cylinder models.

What symptoms indicate a power pack needs replacement? A failing power pack commonly causes hard starting, misfiring, or intermittent ignition on the OMC 6-cylinder engines the Sierra 18-99296 is designed for.

Is the Sierra 18-99296 a new or remanufactured unit? The 18-99296 is a new digital optical power pack, not a remanufactured or used unit.

What category does part number 18-99296 fall under? Part number 18-99296 is listed in the Evinrude Outboard Power Packs category for OMC 6-cylinder engines.