Designed for a wide range of replacement and engine swap applications, these Raw cast iron exhaust manifolds for 2002-2012 Chevy LS engines feature a contoured design that directs exhaust flow towards the exit port for improved performance. Made from durable cast iron, these manifolds offer long-lasting, leak-free performance and reduced under hood noise compared to traditional headers. Their shorty design allows for maximum ground clearance and 2.25" flanges ensure a secure fit. Please note that while these manifolds are new, they may have some minor tooling marks - please refer to pictures before purchasing. (GM part # 92202326 gasket required for basic installation, not included.)