MACE PERFORMANCE MANIFOLD INSULATOR KIT TO SUIT CHEVROLET SIDI LLT 3.6L V6This Manifold insulator kit does come with bolts however due to the large variances of the High Feature V6 engines, fitment of the bolts as well as the manifold insulators themselves, cannot be 100% guaranteed. If in doubt, please share photos and measurements of your vehicle's manifold runners and bolts with us only then we would be able to assist better. Exclusive to Mace Engineering, here we have our design registered lower manifold insulators to