Installing Arp Head Studs on a Subaru Wrx: Costs, Steps, and Performance Benefits

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The Subaru WRX is a popular choice among car enthusiasts and performance drivers. One of the most significant upgrades for improving engine reliability and performance is the installation of ARP head studs. This article will cover the costs, steps, and performance benefits of installing ARP head studs on a Subaru WRX.

Understanding ARP Head Studs

ARP (Automotive Racing Products) head studs are designed to provide superior clamping force compared to factory head bolts. This increased clamping force helps to prevent head gasket failure, especially in high-performance applications.

  • Increased strength and durability
  • Improved sealing of the head gasket
  • Ability to handle higher boost levels

Cost of Installing ARP Head Studs

The cost of installing ARP head studs can vary depending on several factors, including labor costs, the specific model of the WRX, and whether additional modifications are needed. Below is a breakdown of potential costs:

  • ARP Head Stud Kit: $200 – $300
  • Labor Costs: $500 – $1000 (depending on the shop)
  • Additional Parts (gaskets, fluids): $100 – $300

In total, you can expect to pay between $800 and $1600 for the installation of ARP head studs on your Subaru WRX.

Steps to Install ARP Head Studs

Installing ARP head studs is a complex process that requires a good understanding of engine mechanics. Here are the general steps involved:

  • Step 1: Gather necessary tools and parts.
  • Step 2: Remove the intake manifold and other components to access the cylinder head.
  • Step 3: Drain the engine oil and coolant.
  • Step 4: Remove the cylinder head by unbolting it from the block.
  • Step 5: Clean the surfaces of the block and head thoroughly.
  • Step 6: Install the ARP head studs in the proper sequence.
  • Step 7: Reinstall the cylinder head and torque the studs to the specified settings.
  • Step 8: Reassemble the engine components and refill fluids.
  • Step 9: Start the engine and check for leaks.

Performance Benefits of ARP Head Studs

Upgrading to ARP head studs can provide numerous performance benefits for your Subaru WRX:

  • Enhanced Reliability: The increased clamping force reduces the likelihood of head gasket failure.
  • Improved Boost Handling: ARP head studs allow for higher boost levels without compromising engine integrity.
  • Better Engine Performance: With a secure head gasket seal, the engine can perform more efficiently, improving horsepower and torque.
  • Long-term Durability: ARP studs are designed to withstand the rigors of high-performance driving, ensuring longevity.

In conclusion, installing ARP head studs on a Subaru WRX is a worthwhile investment for those looking to enhance their vehicle’s performance and reliability. While the initial costs may be significant, the long-term benefits can outweigh the expenses, making it a popular choice among Subaru enthusiasts.