3.0 LITER. Alternator mount bolt. DIESEL. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Steering Column Housing Support to it's Mounting point. A/C Compressor Bolt. Alternator Bolt. Alternator Bracket Bolt. Air Conditioning (A/C) Compressor. HEX - HD. 8x90. Steering Column Housing Support.