A Stud Top Bushing Kit with Jam Nuts, 5/8in and 7/8in Hole Bushings
QA1 part number MK03 is a stud-top bushing kit including jam nuts, sized for 5/8in and 7/8in hole bushings.
This is a universal suspension hardware kit sized by bushing hole diameter rather than a specific vehicle; confirm the mating stud and housing bore before ordering.
Key Features
- Includes 5/8in and 7/8in hole bushings
- Includes jam nuts
- Stud-top mounting style
Fitment
| Years | Make | Model | Notes |
|---|---|---|---|
| n.a. | n.a. | n.a. | Universal chassis hardware component. |
Universal; confirm mounting dimensions against the application before ordering.
Specifications
| Detail | Value |
|---|---|
| Brand | QA1 |
| Bushing hole sizes | 5/8in and 7/8in |
| Hardware included | Jam nuts |
What’s Included
- 5/8in hole bushing.
- 7/8in hole bushing.
- Jam nuts, per QA1’s stated kit contents.
About QA1
QA1 manufactures suspension and chassis hardware to defined dimensional specifications, letting builders match components by size and thread rather than by a single vehicle-specific part number.
FAQ
What bushing hole sizes are included in this kit?
5/8in and 7/8in.
Are jam nuts included?
Yes, per QA1’s stated kit contents.
What mounting style is this kit for?
Stud-top mounting.
Is this kit vehicle-specific?
No. It is a universal suspension hardware kit sized by bushing hole diameter; confirm the mating stud and housing bore before ordering.
Can this kit be used on both shocks and coilovers?
Confirm the specific stud-top mount design matches this kit’s bushing sizes before use on either application.
Does this kit include the mounting stud itself?
QA1’s stated contents cover the bushings and jam nuts; the stud is part of the shock or coilover being mounted.
What material are the bushings made from?
Not specified for this exact part number in the sourced listing.
Can the two bushing sizes be used interchangeably?
No, each is sized for a different mount hole diameter; use the one matching the specific mount.
Installation Instructions
QA1 does not publish a vehicle-specific installation procedure or torque value for this hardware; use the mount manufacturer’s specification.
- Confirm the mount’s stud diameter and hole size match the 5/8in or 7/8in bushing needed.
- Install the correct bushing into the mount.
- Thread the jam nut onto the stud and tighten per the mount manufacturer’s specification.
- Verify free motion at the stud-top mount before returning to service.
