Description
The ARP 218-5401 main stud kit is listed for Mazda Miata. It secures the main bearing caps to the cylinder block, making fastener choice part of the bearing-clearance and machining plan for the engine build.
Technical Highlights
- Manufacturer part number: 218-5401
- Application/configuration: Mazda Miata
Selection Guidance
The specified cap arrangement, block design and windage-tray requirements determine which kit is appropriate. A similar displacement or engine-family name does not establish that different main fastener kits are interchangeable.
Confirm the block, main-cap arrangement and any girdle or windage tray before ordering. Plan these checks before final machining and bearing selection.
Installation Considerations
Have the engine builder check main-bearing bore size and roundness with the intended fasteners installed at the specified preload. Align-hone if required, using the same hardware and lubricant intended for final assembly. Follow the kit-specific instructions for thread preparation, washer placement and tightening.
Vehicle Fitment
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999 | Mazda | Miata | 10th Anniversary |
| 1990-1997,1999-2005 | Mazda | Miata | Base |
| 1993 | Mazda | Miata | LE |
| 2000-2005 | Mazda | Miata | LS |
| 1994-1997 | Mazda | Miata | M Edition |
| 2004-2005 | Mazda | Miata | Mazdaspeed |
| 1991,2000-2003 | Mazda | Miata | SE |
| 2003 | Mazda | Miata | Shinsen |
| 1997 | Mazda | Miata | STO |