Your Chevrolet Bel Air Engine fixing
Water neck mounting bolts
Type: Hex Head Bolt
Water outlet attachment bolts. 2 required 1x 3/8"-16 x 2-1/8" bolt and 1x 3/8"-16 x 1-1/8" bolt
Thread length: 2 1/8 inch
Thread diameter: 3/8 inch
Threads per inch (tpi): 16
Our thanks to Steven Andrews for this submission.
Whether you are purchasing OEM or off the shelf replacements, please be aware that metal fixings are graded and, for safety, you should talk with the supplier about your specific use.