Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 0-521-303 with rapid responses always offered by our staff. To ensure that you locate and procure exactly what you need with ease, we list parts with as much information as we can. For example, part number 0-521-303 It is listed as Body First Stage. component manufactured by Ingersoll Rand Co, specifically under CAGE Code 03990. It is also accompanied by the NSN 1660000327479 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 1660 Aircraft Air Conditioning Heating and Pressurizing Equipment.