Sierra Stator for Johnson/Evinrude 4 Cylinder Outboards, 12 Amp, 18-99330

The Sierra 18-99330 stator is a 12 amp charging component built for Johnson and Evinrude 4 cylinder outboard engines. As part of the ignition charging system, the stator generates the electrical current used to power the engine's ignition and charging circuits, making it a core component for reliable engine starting and running performance. This stator is sized specifically for 4 cylinder Johnson/Evinrude powerheads and is rated for 12 amp output, matching the charging demand of these engines.

Stators are a common wear item on outboard engines, especially those that have seen years of saltwater or heavy-use service, and a failing stator is a frequent cause of weak spark, hard starting, or a dead battery charging circuit. The 18-99330 is sized and packaged as a direct component replacement for the 4 cylinder Johnson/Evinrude application, allowing installers to restore charging system output without sourcing a full ignition overhaul kit.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-99330
• Product Type: Stator
• Application: Johnson/Evinrude, 4 Cylinder Outboards
• Amperage: 12 amp
• Weight: 2.5 pounds
• Package Dimensions: 9 x 7 x 2.5 inches
• UPC: 736983851994

Fitment

• Johnson/Evinrude 4 cylinder outboard engines

Replaces (OEM)

• No OEM cross-reference numbers are published for the 18-99330 stator.

Frequently Asked Questions

What engines does the Sierra 18-99330 stator fit? The 18-99330 stator is built for Johnson and Evinrude 4 cylinder outboard engines.

What is the amperage rating of this stator? The 18-99330 stator is rated for 12 amp output.

How much does the 18-99330 stator weigh? This stator weighs 2.5 pounds.

What are the package dimensions for the 18-99330 stator? It ships in a package measuring 9 x 7 x 2.5 inches.

Does the 18-99330 stator have listed OEM cross-reference numbers? No OEM cross-reference or replaces numbers are published for the 18-99330 stator. Confirm fit using the 12 amp rating and 4 cylinder Johnson/Evinrude application.

Is the 18-99330 a genuine or aftermarket part? The 18-99330 is sold as a Sierra branded component for Johnson/Evinrude 4 cylinder outboard ignition charging systems.

What symptoms indicate a failing stator on a Johnson or Evinrude outboard? A failing stator on a Johnson/Evinrude 4 cylinder outboard commonly causes weak spark, hard starting, or insufficient charging output, which is what the 18-99330 stator is designed to restore.

Can this stator be used on outboards with a different cylinder count? The 18-99330 stator is specified for 4 cylinder Johnson/Evinrude engines and its 12 amp rating is matched to that application.

What is included when you order the 18-99330 stator? The order includes the 18-99330 stator unit, packaged in a 9 x 7 x 2.5 inch box weighing 2.5 pounds.

Is professional installation required for the 18-99330 stator? Installing a stator involves accessing the ignition charging components on the 4 cylinder Johnson/Evinrude powerhead, which many owners with outboard repair experience can handle, though a marine technician can also perform the installation.

How is the UPC for this stator used? The 18-99330 stator can be verified at checkout or in inventory systems using UPC 736983851994.