Sierra 18-99223 Stator, Replaces 583410, Fits Johnson/Evinrude 1988-2001 120-150 HP 4 Cyl Loop Charged Outboards

The Sierra 18-99223 stator is a 4-cylinder, 9 amp charging component built for Johnson/Evinrude loop charged outboard engines equipped with Quick Start and S.L.O.W. Systems. The stator generates the AC current that feeds the engine's charging and ignition circuits, and a worn or failed stator is a common cause of weak charging, hard starting, or intermittent electrical faults on these outboards. It is designed as a direct replacement for the factory unit on covered Johnson/Evinrude powerheads, restoring reliable charging output without modification to the original wiring harness or mounting hardware.

This stator fits Johnson/Evinrude loop charged 4-cylinder engines rated at 120, 125, 130, 140, and 150 HP built between 1988 and 2001, specifically those equipped with the Quick Start and S.L.O.W. (Speed Limiting Overheat Warning) systems. Confirm your engine's HP rating, model year, and equipped systems against the fitment list below before ordering, since stator applications vary across engine families.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-99223
• Amperage: 9 Amp
• Cylinder Count: 4 Cylinder
• Weight: 2.6 pounds
• UPC: 808282393908
• Compatible Systems: Quick Start and S.L.O.W.
• OEM Cross Reference: 763769, 583410

Fitment

• Johnson/Evinrude loop charged engines, 1988-2001
• Horsepower: 120, 125, 130, 140, 150 HP
• Equipped with Quick Start and S.L.O.W. Systems

Replaces (OEM)

• 763769
• 583410

Frequently Asked Questions

What engines does the Sierra 18-99223 stator fit? The 18-99223 fits Johnson/Evinrude loop charged 4-cylinder outboards rated at 120, 125, 130, 140, and 150 HP built from 1988 to 2001, specifically those equipped with the Quick Start and S.L.O.W. Systems.

What OEM part numbers does this stator replace? Sierra 18-99223 replaces OEM part numbers 763769 and 583410 on covered Johnson/Evinrude loop charged engines.

How much does the 18-99223 stator weigh? The Sierra 18-99223 stator weighs 2.6 pounds.

Is the 18-99223 an OEM or aftermarket stator? The 18-99223 is a Sierra-branded aftermarket stator engineered to replace the OEM 763769 and 583410 stators on compatible Johnson/Evinrude engines.

What is the amperage rating of this stator? Sierra part 18-99223 is rated at 9 amps for use on 4-cylinder Johnson/Evinrude loop charged outboards.

Does this stator work with the S.L.O.W. System? Yes, the 18-99223 is designed for engines equipped with the Quick Start and S.L.O.W. (Speed Limiting Overheat Warning) systems.

Will the 18-99223 fit a 4-cylinder Evinrude 140 HP built in 1995? A 1995 Evinrude 140 HP loop charged engine falls within the covered 1988-2001, 120-150 HP range for the Sierra 18-99223 stator, provided it is equipped with Quick Start and S.L.O.W.

What symptoms indicate a failing stator like the 18-99223? Weak or no charging output, hard starting, and intermittent ignition or electrical faults are common signs that a stator such as the 18-99223 needs replacement on a Johnson/Evinrude outboard.

Does the 18-99223 come with mounting hardware? The Sierra 18-99223 stator is supplied as the replacement stator unit itself for direct fitment into the existing charging system on compatible Johnson/Evinrude engines.

Can this stator be used on a 6-cylinder Johnson/Evinrude engine? No, the 18-99223 is built specifically for 4-cylinder Johnson/Evinrude loop charged engines in the 120-150 HP range and is not intended for 6-cylinder applications.