Features: 1.Part Number: According to the original factory specifications, replacing reference part number is 210667017 / 21066 7017. Wonderful replacement for most FR, FS and FX 603CC and 726CC engines. 2.Strong Compatibility: Replacement for FR541V, FR600V, FR651V, FR691V, FR730V, FS481V, FS541V, FS600V, FS651V, FS691V FS730V, FX481V, FX541V, FX600V, FX651V, FX691V and FX730V Series Engine (Not All). 3.Durable Construction: The aluminum alloy housing and heat?dissipating silicone ensure that the heat that dissipates the electronic components is even exported, increasing the life of the rectifier. 4.Charging Protection: The rectifier has a battery charging protection function. When the battery power is 100%, the rectifier stops charging the battery, preventing the battery from being overcharged. 5.Stable Voltage Output: The output voltage is stable, which can protect various electronic equipment on the car and improves its service life, has stable performance. Specification: Item Type: Voltage Regulator_x000D_ Material: Aluminium Alloy+Silicone_x000D_ Replace Part Number: 210667017 / 21066 7017._x000D_ Fitment:_x000D_ Replacement for FR541V, FR600V, FR651V, FR691V, FR730V, FS481V, FS541V, FS600V, FS651V, FS691V FS730V, FX481V, FX541V, FX600V, FX651V, FX691V and FX730V Series Engine Models (Not All)._x000D_ Replacement for most FR, FS and FX 603CC and 726CC engines. Note: 1. Please double check the part number of your item, matching information is for reference only._x000D_ 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!