ARP 155-5421 is a BB Ford 390-428 FE Series 12pt main bolt kit.
- Brand: ARP
- Category: Engine Block
- Product Type: Main
- Part Number: 155-5421
Fastener Specification
- Bolt/Stud Kit: Stud
- Thread1: 1/2-13 in
- Quantity1: 8
- Thread2: 1/2-13 in
- Quantity2: 2
- Head/Nut Style1: 12 Point
- Head/Nut1 Quantity: 8
- Head/Nut Style2: 12 Point
- Head/Nut2 Quantity: 2
- Washers Included: Yes
- Head Size1: 9/16 in
- Broached Allen Size1: 3/16 in
- Material: Chromoly
- Finish: Oxide
Engine Compatibility
- Ford Big Block 390
- Ford Big Block 391
- Ford Big Block 406
- Ford Big Block 410
- Ford Big Block 427
- Ford Big Block 428
- Ford 390
- Ford 391
Show 5 more compatible fitments
- Ford 406
- Ford 410
- Ford 427
- Ford 428
- Ford Fe Series
Product Specifications
- Manufactures Part Number: 155-5421
- Assembly Lubricant Included: Yes
- Alloy: 8740
- Color: Black
- Quantity: Kit