SBC D-Port Block Hugger Headers

The Sanderson SBC D-Port Block Hugger Headers are a purpose-built exhaust solution for Small Block Chevy street rod and marine applications. Featuring 1.625-inch primary tubes that merge into a 3-inch collector, this header pair is engineered to optimize exhaust scavenging while maintaining a compact profile that hugs the engine block—critical for tight engine compartments common in retrofit builds and marine installations. The steel construction with natural finish handles high-heat exhaust temperatures while resisting corrosion in the challenging marine environment where salt air and moisture constantly threaten bare metal.

The 1.625-inch primary tube diameter is sized specifically to match Small Block Chevy displacement characteristics, providing the restriction needed for mid-range torque without excessive backpressure at cruising RPM. The 3-inch collector outlet accommodates aftermarket exhaust systems and provides a standard interface for muffler selection. Hardware is included, eliminating the need for separate gasket and bolt sourcing. Each pair weighs 16.35 pounds and ships ready for direct bolt-on installation to Small Block Chevy cylinder heads, making this a straightforward upgrade for boaters and street rod builders seeking improved exhaust flow without requiring custom fabrication or welding.

This header configuration suits boaters running Small Block Chevy power in fiberglass runabouts, bay boats, and center consoles where engine bay space is limited and marine-grade corrosion resistance matters. Street rod and hot rod builders likewise benefit from the block-hugger design when working with tight engine compartments. The natural steel finish requires standard corrosion management—marine-grade epoxy primer and topcoat are recommended for saltwater applications, or consider upgrading to ceramic-coated headers if you're running saltwater regularly. The included hardware ensures installation compatibility without modification or hunting for odd-sized fasteners.