ARP main stud kit for the Audi inline-five, replacing the factory main cap bolts with heat-treated studs for consistent clamping load and improved bottom-end strength under boost or high RPM. Studs thread into the block and torque against ARP nuts, giving a more accurate and repeatable clamp than stretch bolts. Kit includes the main studs, nuts, washers, and ARP Ultra-Torque assembly lube.
| Type | Main stud kit |
| Scope | Main studs |
| Included | Studs, nuts, washers, ARP assembly lube |
| Fitment | Audi 5-cylinder (4000/5000/80/90/100/200/Coupe/Quattro, 1981-1992) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1989-1991 | Audi | 100 | Base |
| 1989 | Audi | 100 | E |
| 1989-1991 | Audi | 100 Quattro | Base |
| 1989-1991 | Audi | 200 | Base |
| 1991 | Audi | 200 Quattro | 20v |
| 1991 | Audi | 200 Quattro | 20v Avant |
| 1991 | Audi | 200 Quattro | Avant |
| 1989-1991 | Audi | 200 Quattro | Base |
| 1986-1987 | Audi | 4000 Quattro | CS |
| 1984-1985 | Audi | 4000 Quattro | S |
| 1981-1983 | Audi | 5000 | Base |
| 1986-1988 | Audi | 5000 | CS |
| 1985 | Audi | 5000 | CS Turbo |
| 1981-1988 | Audi | 5000 | S |
| 1981-1985 | Audi | 5000 | S Turbo |
| 1986-1988 | Audi | 5000 Quattro | CS |
| 1987-1988 | Audi | 5000 Quattro | S |
| 1991-1992 | Audi | 80 | Base |
| 1988-1992 | Audi | 80 Quattro | Base |
| 1988-1991 | Audi | 90 | Base |
| 1990-1991 | Audi | 90 Quattro | 20v |
| 1988-1989 | Audi | 90 Quattro | Base |
| 1981-1985 | Audi | Coupe | Base |
| 1986-1987 | Audi | Coupe | GT |
| 1990-1991 | Audi | Coupe Quattro | 20v |
| 1983-1985 | Audi | Quattro | Base |
