Polished 454/502 E-Top Headers
CMI’s polished 454/502 E-Top Headers are a direct Mercruiser replacement for 454/502 engines. CMI headers offer more water jacketed protection than stock exhaust can provide. CMI uses the same high quality semi automated process on these headers as with the entire product line. These headers are fully post annealed to reduce stresses built up in the header during the manufacturing process. Best of all, 454/502 E-Top Headers are made to last – they are mandrel bent and formed from high quality 316L grade material. There are no parts to crack; all CMI collectors are forged from American-made stainless steel. This kit is price competitive to other aluminum/ stainless manifold systems. Optional brackets for Shift, ECU and Oil Filter available to tailor the headers to your exact build needs.
454/502 / Big Block / E-Top