1999-2004 SOHC Long Block *L25,Q25 CASTINGS




Designed to be better than new.

Reverse engineered to ensure any factory defects are eliminated.
Quality tested to ensure proper compression, oil pressure, and water temperature.

Does not include pick up tube, oil pan, valve covers or rear main seal, call to purchase these separately


*Dual port heads L25 casting or Q25 non VVL

*Some pictures shown are just for reference

*Price does not include sales tax or shipping


Call to place order or to verify fitment. We have most models and years for Subaru.



Shipping will not be charged during this online purchase, it will appear as “free” during the check out page but the charge will be calculated, added on to your invoice and balance will be due once your order has been completed. Depending on your location, shipping can take 1-2 weeks. The tracking number will be provided upon request.


Prices may change due to part fluctuation at time of order.


Get started by calling us at 1-877-GCH-SUBI (1-877-424-7824)

Or message us here or email us at: georgescylinderhead@gmail.com


Looking to finance through Affirm? Follow this link to get started!

1999-2004 SOHC Long Block (EJ251)

PriceFrom $2,700.00
  • We have three generations of engineering and craftsmanship in the field of stock and high performance machining and building.


    Everything is built in house, and our team has control over what leaves our shop.


    Each block goes through our rigorous inspection from start to finish, and we measure and inspect everything inside and out to make sure we are always within perfect tolerance levels. Our team makes all needed adjustments.

    • Thoroughly cleaned by Jet Wash, with a hand cleaning, pressure wash, and high pressure oil galley deep cleaning

    • Block honed

    • Block and heads resurfaced

    • Cylinders bored to each piston lay out

    • Crankshaft ground on index to better than OE tolerances for clearance

    • Connecting rods reconditioned to better than OE-specified tolerances

    • Cylinder head valve guides are reconditioned to better than OE specified tolerances and valve seats 3-angle machined

    • All “wear” parts like pistons, rings, bearings, and gaskets replaced with new

    • All parts meet or exceed OE specs