If your Sea-Doo personal watercraft is having charging issues, a weak battery, or lights that are too dim or too bright, your voltage regulator/rectifier might be the culprit. This ECCPP part is a direct replacement for a bunch of older Sea-Doo models from the 90s, including the GT, GTI, GTS, GTX, HX, SP, SPX, and XP (specific years are listed – double-check your model!). It matches OEM part numbers 278000123 / 278-000-123. It converts the alternating current (AC) from the stator to direct current (DC) to charge your battery and regulates the voltage to protect your electrical system. This one is rated for 12V systems with a minimum charging voltage around 14.5V. It comes with a 1-year warranty and includes just the regulator unit. Installation is pretty straightforward if you're handy with basic tools – usually just a few wires to connect. BUT – and this is crucial – please, please double-check the fitment list and compare the photos to your old part before buying. A quick check can save you the hassle of a return. A quality aftermarket part like this can get your old Sea-Doo running smoothly again without the dealership price tag.
