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The ARP CA625+ Head Stud Kit (Part #203-4706) for the Supra/M240/340/440 B58 engine is?a high-performance upgrade featuring ARP's advanced CA625+ alloy, offering superior tensile strength (around 260 ksi) and corrosion resistance to prevent head gasket failure under high boost,?ensuring reliable performance for heavily modified engines by providing consistent clamping force where factory bolts fail.?
Key Features:
¡¤?Material:?Made from ARP's proprietary?CA625+ super alloy, offering exceptional strength and toughness.
¡¤?Performance:?Provides significantly higher clamping force than factory bolts, crucial for high-horsepower builds and preventing cylinder head lift.
¡¤?Durability:?Highly resistant to corrosion and oxidation, ensuring long-term reliability.
¡¤?Application:?B58 engines in Supra/M240/340/440 B58 Gen2?
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Fitment is confirmed for the applications listed in the Specs section above. Always confirm final fitment by year, market, and supporting hardware before ordering.
Yes. A professional calibration is required to safely control boost, fueling, torque limits, and thermal management.
Fueling, charge-air cooling, intake flow, downpipes, and drivetrain upgrades may be required depending on target power and fuel type.
The system is engineered for strong response, but daily drivability depends on calibration, fuel quality, supporting parts, and installation quality.
Warranty coverage applies to manufacturing defects under normal installation and operating conditions. Track use and improper calibration may affect coverage.
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