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EJ205 long block front
Long Blocks

M45 EJ205 Premium Remanufactured Long Block for 2002-2005 Subaru WRX

In stock
Head Studs
Connecting Rods
Oil Pan Option
Add STI 11mm Oil Pump
Timing Components Installed
Base price$6,135.90
Options$0.00
Total$6,135.90
Deposit due now$500.00
Balance due later$5,635.90
  • Base price shown excludes option upcharges; all options are priced separately.
  • Base price shown excludes tax and shipping (if applicable).

EJ205 Long Block Perfected

The EJ205 is a legend in Subaru’s performance history, kickstarting the turbocharged WRX craze in the early 2000s. It paved the way for the bigger, badder EJ engines that followed, but it’s still loved by gearheads for its tuning potential and reliability. This boxer engine helped cement Subaru's reputation as a turbo powerhouse and remains a favorite for those looking to boost performance without losing the iconic WRX spirit.

Say Goodbye to Factory Flaws

Rod Bearing Failures
Often in modified or high-mileage engines; proper maintenance and upgraded components help mitigate this risk.
Oil Consumption
Some engines may consume oil, requiring regular monitoring to maintain optimal performance.

Precision Executed

The engine case, using seasoned case halves, undergoes a comprehensive bore and deck process. Precision boring and honing ensure perfect fitment and alignment, while torque plate honing further enhances accuracy—resulting in a flawless engine case built for optimal performance.

Unmatched Durability

At the heart of this long block is a new OEM Subaru nitride-treated crankshaft, engineered for peak durability and performance, specifically for 2002–2005 WRX applications.

The Power of Resized Connecting Rods

Resized connecting rods restore original dimensions for precise fitment and optimal oil clearance, reducing the risk of rod knock and improving longevity. ACL or King hardened rod and main bearings further enhance durability under high-stress conditions.

Premium Wiseco Forged Pistons

Wiseco forged pistons offer exceptional strength and wear resistance, making them ideal for increased power applications where factory cast pistons may fail. High-grade piston rings and seals improve compression and oil control.

Remanufactured Cylinder Heads

Cylinder heads are precision resurfaced with valve lash set and a complete valve job performed. Qualcast steel valve guides and new OEM valve stem seals are installed, and the heads are assembled using Six Star MLS head gaskets, torqued to factory specifications.

Made Stout with ARP

ARP head studs are thread-rolled after heat treatment, increasing fatigue strength by up to 1000%. Essential for performance engines under increased boost, they provide superior clamping force and long-term reliability.

To Sum It Up

  • Seasoned case halves
  • Seasoned Subaru crankshaft
  • Wiseco forged pistons with new rings and seals
  • Resized connecting rods
  • ACL or King hardened rod and main bearings
  • ARP 2000 head studs
  • Valve lash set
  • Six Star MLS head gaskets
  • Qualcast steel valve guides
  • New OEM valve stem seals
  • Fits WRX 2002–2005

Warranty

M45 Automotive warrants this engine against defects in workmanship and materials for 24 months or 24,000 miles (whichever comes first) from the date of receipt.

Core Charge Policy

No up-front core charge is required. Customers must return their old short block within 30 days of purchase. Failure to do so will void the warranty and result in a $1,000 charge. All cores are accepted regardless of condition, provided they match original specifications.

Freight Shipping

Freight is charged up front for both outbound shipment and inbound core return, ensuring full transparency with no surprise shipping costs.