Stainless Steel Shorty Exhaust Header

The JBA Cat4ward 1830S is a performance shorty exhaust header engineered to be a significant upgrade over stock manifolds for 1987-1991 Chevrolet Suburban and Blazer models equipped with V8 engines (5.7L / 350ci). Constructed from durable, uncoated stainless steel with a matte grey finish, this header features 1.625-inch primary tubes that are mandrel-bent for optimal flow. This header is designed to fit the vehicle as it came from the manufacturer and includes factory-style emission connections, extra-thick collector domes, and 3/8-inch thick machined flanges with oversized exhaust ports. Included with the header are a gasket and all necessary mounting hardware to ensure a professional, no-leak installation. The specifications include a 1.625-inch primary tubing diameter, a 2.5-inch collector port diameter, and a tube wall thickness of 0.059 inches. This header also features an oxygen sensor port. Fitment is specifically for 1987-1991 Chevrolet Blazer and Suburban models with V8 engines (5.7L/350ci) and *without* a smog pump. The product comes with C.A.R.B. EO Number: D-57-48, indicating it is 50 State Legal when installed according to the manufacturer's application guide and installation instructions. It's important to note that header applications are based on original engine and cylinder head port centerlines; raised port cylinder heads may cause installation issues.