Upgrade your Subaru EJ20 and EJ25 engines with the ARP Head Stud Kit 260-4701, crafted from premium ARP2000 material. This kit is designed to provide superior strength and reliability, ensuring optimal performance for your vehicle. Perfect for high-performance applications, these head studs are engineered to withstand extreme conditions, making them an essential upgrade for any Subaru enthusiast.
Compatibility: Specifically designed for Subaru EJ20 & EJ25 DOHC engines.
Material: Made from high-strength ARP2000 alloy for enhanced durability.
Performance: Provides superior clamping force to maintain head gasket integrity under high boost and power levels.
Corrosion Resistance: Features a black oxide finish for added protection against rust and corrosion.
Installation: Includes all necessary hardware for a straightforward installation process.
Ensure your engine's reliability and performance with the ARP Subaru EJ20 & EJ25 DOHC Head Stud Kit 260-4701. Ideal for both street and track use, this kit is a must-have for any serious tuner or racer.
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Disclaimer:
Product images are for description purposes only. Actual product may vary.
What is the difference between ARP2000, L19 and CA625+?
ARP2000 suits most high-performance builds. L19 offers higher strength but is sensitive to handling and corrosion. CA625+ is used for extreme cylinder pressure or rpm.
Why is ARP lubricant important?
ARP torque values assume Ultra-Torque lubricant on threads and under the head. Without it, clamp load becomes unpredictable.
What torque specifications should I use for the ARP head studs in the EJ20 and EJ25 engines?
For the ARP2000 head studs in the Subaru EJ20 and EJ25 engines, you should follow the recommended torque values provided by ARP. Typically, this is around 70 ft-lb when using ARP Ultra-Torque lubricant. Always verify with ARP's latest instructions for the most accurate specifications.
Do I need to machine the cylinder head or block when installing the ARP head studs?
While the ARP head studs are designed for a direct fit, it's crucial to ensure that the cylinder head and block surfaces are flat and within OEM specifications. If there are any signs of warping or damage, machining may be required to achieve proper sealing and clamping.
Can I use the ARP head stud kit for high-boost applications?
Yes, the ARP head stud kit 260-4701 is specifically designed to handle high-boost applications. The superior clamping force provided by the ARP2000 material helps maintain head gasket integrity under increased pressure, making it suitable for performance builds.
Is there any special installation procedure for the ARP head studs?
When installing the ARP head studs, it's important to follow a specific tightening sequence to ensure even clamping. Additionally, applying ARP Ultra-Torque lubricant to the threads and under the bolt heads is essential for accurate torque readings and to prevent galling.
What is the benefit of the black oxide finish on the ARP head studs?
The black oxide finish on the ARP head studs provides corrosion resistance, which is crucial for maintaining the integrity of the fasteners in harsh environments. This helps prolong the life of the studs and ensures reliable performance over time.
