Thermo-Tec 14004 Header Manifold Blanket for 4 Cylinder and Straight 6, 1 Piece This flexible heat shield simply clips into place on the upper portion of the header; the fabric side of the material should be facing the heat source, and the aluminized side facing away Offers protection from abrasion and harmful liquid spills 36 inch by 40 inch blanket for straight 6 and 4 cylinder engines