Sierra 18-99231 Stator Charging Coil - Johnson/Evinrude 2 Cylinder 5 Amp, Replaces 582926, Fits 1977-2007 4-60 HP

The Sierra 18-99231 is a stator charging coil built for 2-cylinder Johnson/Evinrude outboard engines rated 5 amps. The stator is the charging component inside the flywheel housing that generates AC current as the flywheel spins, feeding the rectifier to keep the battery charged and supply power to the ignition system. This coil is designed as a direct replacement for the OEM unit on covered Johnson/Evinrude outboards, restoring reliable charging output when the original stator has failed, weakened, or shows signs of insulation breakdown.

Weak or failed charging output is a common cause of a dead battery or an engine that runs fine but won't keep its battery topped off underway. Installing a fresh stator coil like the 18-99231 addresses this at the source rather than masking the symptom with a bigger battery or an external charger. The unit is sized to match the 2-cylinder charging system architecture used across a range of Johnson/Evinrude horsepower ratings, so it bolts into the same mounting location as the original part it replaces.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-99231
• Product Type: Stator Charging Coil
• Cylinders: 2
• Output: 5 Amp
• Compatible Engine Brand: Johnson/Evinrude
• Fitment Years: 1977-2007
• Horsepower Range: 4 to 60 HP
• Weight: 0.5 pounds
• UPC: 808282393984

Fitment

• Johnson/Evinrude outboard engines, 4 to 60 HP, model years 1977-2007

Replaces (OEM)

• 582926

Frequently Asked Questions

What engines does the Sierra 18-99231 stator coil fit? The Sierra 18-99231 fits 2-cylinder Johnson/Evinrude outboard engines from 4 to 60 HP, model years 1977-2007.

Is the Sierra 18-99231 a direct replacement for OEM part 582926? Yes, the Sierra 18-99231 replaces OEM number 582926 and installs in the same location as the original stator.

How many amps does this stator coil put out? The 18-99231 is a 5 amp stator charging coil, matching the output rating of the 2-cylinder charging system it replaces.

What does a stator coil actually do on an outboard? A stator coil sits inside the flywheel housing and generates AC current as the flywheel rotates, which is then fed to the rectifier to charge the battery and power the ignition system; the 18-99231 performs this role on 2-cylinder Johnson/Evinrude outboards.

How much does the Sierra 18-99231 weigh? It weighs 0.5 pounds.

What are the symptoms of a failing stator that this part fixes? A weak or dead battery that won't hold a charge while the engine runs fine otherwise is the classic symptom of a failing stator, and replacing it with the Sierra 18-99231 restores proper charging output on covered 2-cylinder Johnson/Evinrude engines.

Is this stator coil only for 2-cylinder engines? Yes, the 18-99231 is built specifically for the 2-cylinder charging system used on Johnson/Evinrude outboards in the 4 to 60 HP range.

Does the Sierra 18-99231 come with mounting hardware? The listing covers the stator charging coil itself; no separate hardware or wiring harness is specified as included.

Will this work on a 3-cylinder or 4-cylinder Johnson/Evinrude? No, the 18-99231 is rated for 2-cylinder Johnson/Evinrude outboards only, so it should not be used on 3- or 4-cylinder charging systems.

How do I know if I need this stator versus a different Sierra stator part number? Confirm your outboard is a 2-cylinder Johnson/Evinrude in the 4 to 60 HP range, model years 1977-2007, and that your original stator is stamped with or cross-references to 582926 before ordering the 18-99231.

Is the Sierra 18-99231 an aftermarket or genuine part? The 18-99231 is a Sierra-branded replacement stator coil manufactured to match the fit and output of the original 582926 equipment it replaces.