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 universal It 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, Rubber Color: Silver Tone Thread Size: 3/8 - 16UNC Product 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 Neck 1 x Thermostat Housing Gasket 1 x O Ring 2 x Bolt