ARP CA625+ Head Stud Kit - Toyota Supra (A90) / BMW M240i / M340i / M440i (B58 Gen2)
Regular price
$1,799.99
The ARP CA625+ head stud kit is built for the second-generation BMW B58 engine used in the Toyota Supra and the BMW M240i, M340i and M440i. It is made from ARP's own CA625+ alloy, with a tensile strength of around 260,000 psi and strong resistance to corrosion and oxidation. Compared with the factory head bolts it holds a much higher, consistent clamping load, which stops the head lifting and the gasket failing under high boost. It is aimed at heavily modified, high-power B58 engines where the stock bolts reach their limit.
Features
- ARP's proprietary CA625+ super alloy for exceptional strength and toughness
- Tensile strength of around 260,000 psi
- Much higher clamping force than the factory head bolts
- Helps prevent cylinder head lift and head gasket failure under high boost
- High resistance to corrosion and oxidation for long-term reliability
- Suits second-generation B58 engines only
Specifications
- Brand: ARP
- Product Type: Head Stud Kit
- Engine: BMW B58 Gen2 3.0L turbo inline six
- Material: ARP CA625+ alloy
- Tensile Strength: Approx. 260,000 psi (260 ksi)
- Part Number: 203-4706
Vehicle Compatibility: 4 applications across 2 makes. Select a make to view.
BMW (3)
| Model | Variant | Engine | Years | Notes |
|---|---|---|---|---|
| M240i | G42 | 3.0L B58 Gen2 | B58 Gen2 only | |
| M340i | G20 / G21 | 3.0L B58 Gen2 | B58 Gen2 only | |
| M440i | G22 / G23 / G26 | 3.0L B58 Gen2 | B58 Gen2 only |
Toyota (1)
| Model | Variant | Engine | Years |
|---|---|---|---|
| Supra | A90 | 3.0L B58 Gen2 |
Please confirm fitment against your vehicle before ordering. Contact us if you need help selecting the right part.