Product Description Flowmaster’s Manifold Downpipe Kit is engineered for enthusiasts looking to run a crossmember-back exhaust system while retaining factory exhaust manifolds. Designed specifically for Chevrolet small block engines in GM A-Body and F-Body vehicles, this kit provides a clean, leak-free connection between the manifolds and the rest of the exhaust system. Constructed from durable 16-gauge 409S stainless steel with precision mandrel bends, these downpipes ensure optimal exhaust flow and long-lasting performance. High-quality flange gaskets are included to deliver a secure seal, making installation straightforward and reliable. Features & Benefits Direct adaptation: Connects crossmember-back exhaust to factory manifolds Mandrel-bent tubing: Ensures smooth exhaust flow and performance Durable build: 16-gauge 409S stainless steel construction Leak-free fit: Includes high-quality flange gaskets Large diameter: 2.50-inch pipes for improved exhaust efficiency Heat riser delete design: Built for simplified performance setups Flowmaster quality: Trusted performance exhaust engineering Specifications Part Number: 81068 Product Type: Downpipe Kit System Type: Dual Quantity: 1 Pair Material: Stainless Steel (409S) Tubing Diameter: 2.50 in Material Gauge: 16 Bend Type: Mandrel Finish: Natural / Silver Inlet Type: Flanged (Bolt-On) Outlet Type: Clamp-On / Weld-On Inlet Diameter: 2.37 in (ID), 2.50 in (OD) Outlet Diameter: 2.37 in (ID), 2.50 in (OD) Gaskets Included: Yes Clamps Included: No Hangers Included: No Fitment Chevrolet Small Block Engines GM A-Body Vehicles GM F-Body Vehicles Emissions Information Legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles only Not legal for installation on emissions-controlled vehicles Uncontrolled Vehicles Include: 1965 and older California-certified vehicles 1967 and older federally certified U.S. vehicles 1967 and older foreign vehicles Notes Designed for use without a heat riser Professional installation recommended for best results Clamps and additional mounting hardware may be required Tech Resources Instructions - 81068_instructions.pdf Instructions - fm_warranty_general.pdf
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