Header Bolt And Stud Kits

  
| Application | BLACK OXIDE | STAINLESS 300 | ||
| Hex  | 12-point | Hex  | 12-point | |
| CHEVROLET, SMALL BLOCK | . | . | . | . | 
| 3/8 Diameter Stud, 1.670 (12 pcs) | AR100-1402 | . | AR400-1402 | . | 
| 3/8 Diameter Bolt .750 U.H.L (12pcs) | AR100-1101 | AR100-1201  | AR400-1101 | AR400-1201 | 
| 3/8 Diameter Bolt .750 U.H.L., Drilled (12 pcs) | . | . | . | AR400-1203 | 
| CHEVROLET, BIG BLOCK | . | . | . | . | 
| 3/8 Diameter Stud, 1.670 (16 pcs) | . | AR100-1403 | . | AR400-1403 | 
| 3/8 Diameter Bolt .750 U.H.L (16pcs) | AR100-1102  | AR100-1202  | AR400-1102  | AR400-1202 | 
| 3/8 Diameter Bolt .875 U.H.L., Drilled (16 pcs) | . | . | . | AR400-1204 | 
| CHRYSLER | . | . | . | . | 
| KB Hemi, Stud w/prov for blower blanket brackets | . | AR245-1301 | . | . | 
| FORD | . | . | . | . | 
| 3/8 Diameter Stud, .750 U.H.L. (16 pcs) | . | . | AR400-1102  | AR400-1202 | 
| OTHER | . | . | . | . | 
| 3/8 - 5-1/16. 1500 (16 pcs) | . | AR100-1411  | . | . |