Description:90 degree swivel silver tone water neck. Water neck O ring is a good fit for a dependable leak proof seal.Comes with all the necessary hardware for a quick easy installation.This thermostat housing water neck is made of solid aluminum alloy for long service life.This is a non-OEM product, accessory only!Specification:Color: Silver ToneMaterial: Aluminum AlloyWater Neck Style: 90 DegreeWater Neck Size: 10x8.2x6.3cm / 3.94"x3.23"x2.48"(L*W*D) Accessory Size: 10.6x6.7x1.7cm / 4.17"x2.64"x0.67"(L*W*H)Hole Size: 11mm / 0.43"Thread Size: 1/8-16UNCCondition: Brand NewFitment:for Chevrolet SBC BBC Small Block Big Blockfor Chevy 283 302 305 327 350 383 396 427 454 502Package Includes:1 x 90 Degree Water Neck1 x Accessory 1 x O Ring2 x Bolt.