Brother Needle Supply Unit Assembly Complete  This is a Brand New Needle supply Unit Assembly to work with the Brother 4000 series sewing Machine. Brother NV4000, 4000D, 4500D  sewing Machine. Part # XC-8672652                         Due to the sensitivity of these boards, There is absolutely no return and should be installed by a trained tech:                                         "PLEASE READ BEFORE ORDERING--THERE IS NO RETURN OR REFUND ON THIS Assembly."   Free Shipping in Domestic USA