Replacements Of Original Prefect For Adding A TH350 Or TH400 Stainless Steel Construction Factory Style Lines Maximum Corrosion Resistance These El Camino replacement transmission lines have been manufactured to meet or exceed factory specifications and performance. You will find the fit and function will work perfectly for your vehicle. You will also be pleased to know that the El Camino Store has sourced these transmission lines among other possible parts as the best choice for your repair or restoration project.