4-Tube Long Tube Exhaust Headers, 1.75-Inch Primary, Black

The Doug's Headers D334-B is a 4-tube, long tube exhaust header system engineered for performance. Constructed from durable 16-gauge steel, these headers feature 3/8-inch thick machined flanges designed to prevent warping. The primary tubes measure 1.75 inches in diameter, leading to a 3-inch collector outlet, and include 2.5-inch reducer cones. These headers are CNC mandrel bent to ensure an accurate fit and optimized exhaust flow, which helps to reduce backpressure and increase horsepower in the higher RPM range. The Hi-Temp Black Coated finish provides corrosion and heat resistance up to 1400 degrees Fahrenheit, offering a durable and aggressive look. The package includes necessary gaskets and installation hardware. These headers are specifically designed for 1963-1982 Chevrolet Corvettes. It's important to note potential installation considerations, such as the need for a left side A/C bracket (part number H7608) on certain models, and the requirement to remove or modify locking steering columns if equipped. Some specific engine variations, like GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines, are not compatible.