Specifications Hign-concerned Chemical:None Special Features:XENON Ballast Other Part Number:W3T21571 Manufacturer Part Number:W3T24771 Suitable For Lamp:Headlights Replace Part Number 1:W3T22371 W3T24571 Replace Part Number 2:W3T23672 W3T23371 Replace Part Number 3:8301C463 8301C770 Apply Car Modle:For Mazda 3 2014-2018 Apply For Headlight:Replace D4S D4R HID XENON Ballast Wattage:35W Voltage:12 V Replaceable Ballasts with OEM Part Numbers: W3T24771 W3T24771 W3T21571 W3T22371 W3T24571 W3T23371 W3T23672 8301C463 8301C770 Note: This kit only replaces the above Part Numbers: A minor difference in carburetor design may result in a different model. Please carefully check if the pictures match with your ballast. And feel free to contact us if you are not sure if this is the right model for you. Send us pictures of your current ballast with clear shots on each side if you can't be sure about the match yourself, we can help find the right mode for you. Features : Voltage:12V Power:35W Size:Same design and size as original OEM Ballast D4S D4R replacement HID Xenon control unit No modification necessary direct plug-and-play installation. The ballast does not effect the colour temperature that will remain by the rating on the bulbs. Packing: 1Piece Ballast About Warranty (1) If the product with problem after using it,please send us photos or video for check.We can send the replacement for free,but buyer need to pay the shipping cost. (2) If the item has no defective or quality problem, return of product is accepted provided: a. The item MUST be in original condition. b. Buyer is responsible for the return shipping fee solely. About Refund or Resend (1) If the package fails to be received due to the reasons of the buyer and is returned for destruction, the product cannot be refunded or reissued, and the buyer shall bear the responsibility (2) You can contact us if the tracking information of your parcel didn't update in a long time , we can help you contact the post office to check , if your parcel lost, we can resend or refund you all money. (3) When you receive our parcel,if you are not satisfied with our products,please contact us in Aliexpress first(Please do not open dispute first),we will solve your problem untill you feel satisfied.If we can not solve your problem or you are not satisfied,then you can open dispute.Thanks for you understanding. (4) If the buyer submits bad comments on the order with malicious intentions, we will not be able to deal with the after-sales problems of the product, and we will not be able to refund or reissue the product.Thanks for you understanding. About Feedback (1) If you feel satisfied with our products,pls give us a good feedback with all 5 stars,your support is the biggest motivate to us. (2) If you have any problem with our items or services,Please contact us first.Don't leave a negative comment on the order directly.We will solve your problem and provide you with the best customers services.