Exhaust Header Bolt Kit, Hex Head Black Oxide AR100-1102 Product:fits BB Chev 3/8" Thread X .750" UHL (16 Pack) they will specifically fit the

they will specifically fit the B nuts of -12AN and -10AN fittings only with other sizes also sold separately

These heads will work best with a primary operating range of 3000-7000 rpm's (This range is an average and will vary with engine displacement as well as component selection)

4mm hole centres to suit turbos with 52

Weld-On Aluminium Tank EndsSuit 5" Tube With Smooth Bowl Style

Exhaust Header Bolt Kit, Hex Head Black Oxide AR100-1102 Product:fits BB Chev 3/8" Thread X .750" UHL (16 Pack) they will specifically fit theExhaust Header Bolt Kit, Hex Head Black Oxidefits BB Chev 3 8" Thread X . 750" UHL (16 Pack) AR100 1102 100 1102 Premium Grade Bolt And Stud Ki ts To Facilitate Installation Of Exhaust Headers. The Stainl ess 300 Material Is Not Affect ed By Corrosion Or Extreme Hea t. Compact 12 point Design Let s You Easily Slip A Socket Clo se To The Pipe. Kits Include S pecific Number Of Parts For Yo ur Application, Premium Grade Washers And Hex Or 12 Point Nu ts.