If you're looking for a direct replacement for your worn-out or damaged factory exhaust manifold, look no further than the XDP Driver Side High-Flow Exhaust Manifold XD342. This premium quality aftermarket part is designed to eliminate the "kinked" manifold condition that's common on 2001-2010 GM trucks. It's also a great upgrade for 2011-2016 Duramax LML trucks. Some factory hardware and fasteners can be reused during installation.