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 Material: Aluminium Alloy+Silicone Replace Part Number: 210667017 / 21066 7017. Fitment: 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). Replacement for most FR, FS and FX 603CC and 726CC engines. Package List 1 x Voltage Regulator