General description High-quality SBC BBC Water Neck Thermostat Housing designed for Chevy 350 and 454 small and big block engines. This 15-degree aluminum exhaust neck features a beautiful shine and is ideal for hot rods or street rods, allowing for rotation to fit various engine bays. Technical specifications Degree: 15° Weight: 200g Color: Black Material: Aluminum Alloy Compatibility and accessories Fits SB and 265, 283, 305, 327, 350, 383, 396, 400, 427, 454, 472, 502 engines Installation Includes stainless steel bolts and O-ring for a perfect seal Other information Package Contents: 1 x Exhaust Neck Note: Light shooting and different displays may cause the color of the item in the picture to differ slightly from the actual product The measurement allowed error is +/- 1-3 cm