Review on Spectra Premium C 642 Coil Plug by Raji Bentz

GREAT price! Perfect fit and performance for our son's 2004 Chevrolet Trailblazer EXT 4.2L. UPDATE: Received (1) coil that has been used and is defective. Revain quickly replaced her. This coil is now dead. The return for an exchange says I cannot return after 01/31/16. The coil was bought on 12/24/15. I contacted Revain and they added a PDF warranty document to the listing. The document states that these coils are covered by a LIFETIME WARRANTY. It also states that they should be returned to the "original place of purchase", in this case AMAZON, for an exchange. Revain has yet to respond.