Feature: Made of good Aluminum Be turned to point any direction to make them universal for almost any application.This water neck is built at a 45° degree angle, making it the most universalIt comes complete with mounting bolts and an O ring, a good sealing effect to prevent leakage.This is a non OEM product, accessory only!Specification: Material: Aluminum, RubberColor: Silver ToneThread Size: 3/8 - 16UNCProduct Size: 104 x 71 x105mm / 4.09" x 2.80" x 4.13"(L*W*H)Fitment:for Chevy Small Block 283 327 350 400 396 427 454 EnginesPackage included:1 x Engine Water Neck1 x Thermostat Housing Gasket1 x O Ring 2 x Bolt.