ARP Main Stud Kit
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ARP Main Stud Kit - Mazda 2.3 MZR - Mazda3 MPS (BK / BL) / Mazda6 MPS (GG) / CX-7 (ER)
This ARP main stud kit suits the MZR 2.3 (L3) engine in the Mazda3 MPS / Mazda6 MPS / CX-7. It replaces the factory main cap bolts with studs and nuts, keeping the main caps clamped and located when rpm, boost and cylinder pressure go up.
Studs load the block threads more evenly than bolts and make it easier to line up the caps during assembly.
Material: 8740 chrome moly rated at 200,000 psi tensile strength.
See the Vehicle Fitment tab for the full list of vehicles.
Note: Installation by a professional is recommended.
Features
- Made in the USA by ARP
- 8740 chrome moly, 200,000 psi
- Thread / diameter: 10mm
- ARP torque spec: 60 ft-lb (81 Nm) in three steps with ARP Ultra-Torque
- Installation instructions available from ARP (see Technical Specifications)
Pairs Well With
Shop more: ARP
Need help choosing parts? Contact our team at sales@chicaneaustralia.com.au.
Vehicle Compatibility
| Make | Model | Chassis | Years | Engine / Notes |
|---|---|---|---|---|
| Mazda | Mazda3 MPS | BK | 2006–2009 | L3-VDT 2.3 turbo |
| Mazda | Mazda3 MPS | BL | 2009–2013 | L3-VDT 2.3 turbo |
| Mazda | Mazda6 MPS | GG | 2006–2007 | L3-VDT 2.3 turbo |
| Mazda | CX-7 | ER | 2007–2012 | L3-VDT 2.3 turbo |
Technical Specifications
| Spec | Value |
|---|---|
| Brand | ARP |
| Product | Main Stud Kit |
| Engine | MZR 2.3 (L3) |
| Material | 8740 chrome moly |
| Tensile strength | 200,000 psi |
| Thread / diameter | 10mm |
| Torque (ARP Ultra-Torque) | 60 ft-lb (81 Nm) in three steps |
| Instructions | ARP instruction sheet (link below) |
| Part number(s) | 218-5402 |
Contents
1 x ARP main stud kit – studs, nuts and washers for one engine

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