Sierra Ignition Pack for Yamaha 2-Cylinder Outboards, Part 18-99317

The Sierra 18-99317 is an ignition pack (CDI module) built for Yamaha 2-cylinder outboard motors. The ignition pack is a core component of the outboard's electronic ignition system, controlling spark timing and delivery to keep the engine firing correctly and running smoothly. As a direct-fit replacement component, it is designed to restore reliable ignition performance on Yamaha 2-cylinder outboards experiencing hard starting, misfiring, stalling, or a complete no-spark condition caused by a failed or failing ignition pack.

Ignition packs like this one are a common wear item on outboard engines, since they are exposed to constant vibration, heat, and marine moisture. Replacing a worn or failed unit with the Sierra 18-99317 helps restore consistent spark output and dependable engine starting and running characteristics. At a compact 0.4 pounds, it installs in place of the original ignition pack using the existing mounting and wiring connections on applicable Yamaha 2-cylinder outboard models.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-99317
• Product Name: Yamaha Ignition Pack - 2 Cyl.
• Weight: 0.4 pounds
• Category: Yamaha Outboard CDI / Ignition Pack
• UPC: 808282396145

Fitment

Fits Yamaha 2-cylinder outboard engines.

Frequently Asked Questions

What does the Sierra 18-99317 ignition pack do? It controls spark timing and delivery for a Yamaha 2-cylinder outboard's ignition system, and the part number for this ignition pack is 18-99317.

Will this ignition pack fit my outboard? The 18-99317 ignition pack is built for Yamaha 2-cylinder outboard engines; confirm your engine is a Yamaha 2-cylinder model before ordering.

How much does the 18-99317 ignition pack weigh? This Sierra ignition pack weighs 0.4 pounds.

What symptoms indicate the ignition pack needs to be replaced? Hard starting, misfiring, stalling, or a no-spark condition on a Yamaha 2-cylinder outboard are common signs the ignition pack, such as the Sierra 18-99317, has failed.

Is the Sierra 18-99317 a genuine Yamaha part or aftermarket? The 18-99317 is a Sierra-branded ignition pack designed as a replacement component for Yamaha 2-cylinder outboards.

Does the ignition pack come with mounting hardware? The listing covers the Yamaha 2-cylinder ignition pack itself, part number 18-99317; no additional components are specified.

Can I install the 18-99317 ignition pack myself? Installation involves replacing the existing ignition pack using the outboard's original mounting points and wiring connections, though anyone unfamiliar with marine ignition systems should have a qualified marine technician perform the replacement of this Sierra 18-99317 unit.

What is the UPC for the Sierra 18-99317 ignition pack? The UPC for this Yamaha 2-cylinder ignition pack is 808282396145.

Is this ignition pack for a 2-cylinder or a different cylinder count Yamaha outboard? The Sierra 18-99317 is specifically designed for Yamaha 2-cylinder outboard engines.

Why does an outboard need a functioning ignition pack? The ignition pack, also called a CDI module, is required to fire the spark plugs at the correct timing; without a working unit like the 18-99317, a Yamaha 2-cylinder outboard will not start or run properly.