Quick Ship SKU #: DT-DT660033 Dipaco DTech DT660033 Injector High Pressure #4 / #5 Fuel Line 01-04 6.6L GM Duramax LB7

When it comes time to replace the injectors in your LB7 Duramax, it is absolutely imperative to also replace the injector lines as they typically contain contaminants that will destroy your newly replaced injectors. Most injector rebuilders or manufacturers will not warranty their injectors if you do not replace the lines at the same time. This direct replacement line will fit both the #4 as well as #5 cylinder.