Sierra Power Pack CD2 18-99312 for Johnson Evinrude Outboards

The Sierra 18-99312 is a CD2-type power pack (ignition module) built for Johnson and Evinrude outboard motors. The power pack is the electronic component of the CD2 ignition system that manages spark timing and delivers the charge to the coils, and a failing unit is a common cause of no-spark, misfire, or hard-starting complaints on outboards using this ignition type. Replacing the power pack restores reliable spark generation without requiring a full ignition system overhaul.

This unit is sold under Sierra's marine parts line as a direct component replacement in the Evinrude Outboard Power Packs category, and is built to the light, compact form factor typical of CD2 power packs so it mounts in the same location as the original unit.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-99312
• Category: Evinrude Outboard Power Packs
• Ignition Type: CD2
• Weight: 0.6 pounds
• UPC: 808282395452

Frequently Asked Questions

What is the Sierra 18-99312 power pack used for? It is a CD2-type power pack, the electronic ignition module that controls spark timing and delivers the charge to the coils on Johnson and Evinrude outboard motors equipped with this ignition system.

Is the 18-99312 a genuine Sierra part or aftermarket equivalent? The 18-99312 is a Sierra-branded power pack, sold as a direct replacement component within Sierra's Evinrude Outboard Power Packs line.

What are the symptoms of a failing power pack that this part fixes? A failing CD2 power pack typically causes no-spark conditions, intermittent misfire, or hard starting; installing the Sierra 18-99312 replaces the ignition module responsible for generating and timing the spark.

How much does the Sierra 18-99312 power pack weigh? The Sierra 18-99312 power pack weighs 0.6 pounds.

What ignition system does the 18-99312 belong to? The 18-99312 is a CD2 (capacitor discharge) type power pack, designed as the electronic ignition control module for that system.

What is included when ordering part number 18-99312? Ordering 18-99312 gets you the single Sierra CD2 power pack unit.

Can the 18-99312 be installed as a direct swap for the original power pack? Yes, the Sierra 18-99312 is built as a component replacement power pack, intended to install in place of the original CD2 unit it is replacing.

Does Sierra list OEM cross-reference numbers for the 18-99312? No specific OEM cross-reference numbers are published for the Sierra 18-99312 power pack.

What category does the Sierra 18-99312 fall under? The 18-99312 is listed in the Evinrude Outboard Power Packs category, reflecting its use as an ignition power pack for Johnson and Evinrude outboards.

Is the UPC for the Sierra 18-99312 power pack available? Yes, the Sierra 18-99312 power pack has UPC 808282395452.