Hooker 3902HKR Exhaust Header

Compatible with 65-74 Olds Cutlass/442 71-74 Olds Delta 88 71-74 Vista Cruiser Wagon: 400-455 Tube Size 1.75 in. O.D. x 27 in. Collector Size 3 in. O.D. Collector Length 8 in. Port Shape: Same As Port; Hooker Competition headers offer the best value in the high performance header market. Designed for the value-conscious buyer who is running either a stock or mildly-modified engine Hooker Competition headers offer premium features at a very competitive price. Made of durable 16 gauge mild steel tubing the Hooker Competition header design utilizes a long transition collector to reduce back pressure and increase exhaust flow. A perfect sealing surface is assured with the 5/16 in. machined flanges with welded O-ring seals. Experience has proven that this flange size is ideal to maintain header integrity and be pliable enough to seal each exhaust port. Tubing is mandrel-bent to maintain metal strength and provide consistent tube diameter at radii to maximize performance. Hooker Competition headers have a standard finish that features a heat-cured high-heat-resistant paint. Optionally the famous Hooker Ceramic Thermal Barrier Coating is available.;