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Subaru EJ253 Remanufactured Engine
Saab Subaru EJ25E 2.5L H4 Remanufactured Engine – 2006-2011 - Image 2
Saab Subaru EJ25E 2.5L H4 Remanufactured Engine – 2006-2011 - Image 3
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Subaru EJ253 Remanufactured Engine
Saab Subaru EJ25E 2.5L H4 Remanufactured Engine – 2006-2011 - Image 2
Saab Subaru EJ25E 2.5L H4 Remanufactured Engine – 2006-2011 - Image 3

Saab Subaru EJ25E 2.5L H4 Remanufactured Engine – 2006-2011

Original price was: 4.799,00 €.Current price is: 3.849,00 €.

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Displacement: 2.5L H4
Block Cast: EJ25 / Z25
SOHC 16-Valve

Restore peak Boxer engine performance with a premium Subaru EJ253 Remanufactured Engine. Engineered to meet or exceed OEM specifications, this 2.5L SOHC horizontal-4 long block features an aluminum casting, CNC deck machining, 100% new wearable internal components, and live-run SIM testing.

  • ✔ Valvetrain: SOHC 16-Valve with Aluminum Head & Block
  • ✔ Testing Quality: Hot SIM spun and fully pressurized for compression verification
  • ✔ Vehicle Application: 2006–2011 Subaru Impreza, Forester & Saab 9-2X (2.5L H4 2458cc)
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Description

High-Performance Subaru EJ253 Remanufactured Engine

If you are sourcing a precision-built replacement Boxer powertrain, every Subaru EJ253 Remanufactured Engine from Mechrontech delivers factory-grade quality, improved thermal resistance, and long-term reliability. Specially designed for 2006–2011 Subaru and Saab 2.5L naturally aspirated applications, this long-block engine assembly resolves common factory head gasket vulnerabilities and internal wear issues. View our entire catalog of remanufactured engines for additional B2B fleet and shop replacement solutions.

Engine Code

EJ253 / EJ25E

Cast # EJ25, Z25L, Z25R

Displacement

2.5L (2458cc)

153.0 cu. in. / Horizontally Opposed

Head & Valvetrain

SOHC 16-Valve

Head Cast # V25, T25 (Aluminum)

Shipping Weight

200 lbs

36 x 36 x 36 in.

Why Choose Our Subaru EJ253 Remanufactured Engine?

Used pulled engines from salvage yards often suffer from hidden head gasket degradation or journal scoring. A fully remanufactured unit restores all tolerances to factory zero-hour specifications. The strict machining protocol for each Subaru EJ253 Remanufactured Engine includes:

1. Thermal Cleaning & Chemical Bath

Aluminum crankcases and cylinder heads undergo multi-stage thermal baking and specialized chemical decontamination to completely remove oil varnish, carbon scale, and coolant residues.

2. Magnaflux & Pressure Testing

All aluminum castings are thoroughly inspected under dye penetrant and magnetic particle testing to ensure no microscopic stress fractures exist within internal oil passages or main webs.

3. Precision CNC Surface Machining

Block case halves and cylinder head decks are CNC resurfaced to ultra-precise micro-inch finish tolerances, creating an unyielding plane to eliminate historical Subaru head gasket leak patterns.

4. 100% Brand-New Wear Components

Rebuilt using 100% new main bearings, rod bearings, pistons, rings, valve lifters, high-capacity oil pump, Viton™ valve stem seals, timing belt assembly with tensioner, freeze plugs, and multi-layer steel (MLS) head gaskets.

Automated SIM Testing Protocol

Strict quality validation precedes all crate shipments. Prior to final dispatch, every single Subaru EJ253 Remanufactured Engine undergoes cold-run SIM rig verification:

  • Fluid Pressure Validation: Lubrication and cooling channels are fully pressurized to test oil pressure across all main journals and horizontal cylinder passages.
  • Compression Balance Check: The engine crank is rotated at operational RPMs to ensure balanced cylinder compression across all four opposed pistons.
  • Valvetrain & Timing Inspection: Camshaft timing alignment and valve seat sealing are verified under dynamic movement to eliminate startup noise or lag.

Vehicle Compatibility for the Subaru EJ253 Remanufactured Engine

This 2.5L H4 SOHC long block is directly compatible with the following vehicle models featuring the EJ253 / EJ25E engine platform:

Year Range Make Model Engine Details
2006 Saab 9-2X H4 2.5L 2458cc (EJ253 SOHC)
2006 – 2010 Subaru Forester H4 2.5L 2458cc (EJ253 SOHC)
2006 – 2011 Subaru Impreza H4 2.5L 2458cc (EJ253 SOHC)

Installation & Initial Break-In Guidelines

To preserve warranty coverage and ensure maximum longevity prior to launching your Subaru EJ253 Remanufactured Engine, complete these critical installation practices:

  1. Cooling System Servicing: Thoroughly flush or replace the radiator and oil cooling lines to clear metal particles or chemical residue leftover from the previous failure.
  2. System Priming: Fill with quality non-synthetic break-in oil and manually crank the engine with spark plugs removed to prime oil galleries prior to initial ignition.
  3. 500-Mile Break-In Period: Drive under varied loads for the first 500 miles while avoiding wide-open throttle bursts or constant highway speeds to facilitate proper piston ring seating.

Full Technical Attributes

OEM Manufacturer Subaru / Saab
Engine Code / Casting # EJ253 / EJ25E (Block Cast # EJ25, Z25L, Z25R)
Cylinder Head Casting # Head Cast # V25, T25 (Left & Right)
Casting Location Top Front of Crankcase
Engine Type & Valvetrain 2.5L Horizontally Opposed H4 SOHC 16-Valve
Block & Head Material Aluminum Block / Aluminum Heads
Main Bearing Cap Bolt Quantity 2-Bolt
Fuel Grade Gasoline (Premium Recommended)
Dimensions & Weight 36″ x 36″ x 36″ | 200 lbs

California Proposition 65 Notice: WARNING: This product can expose you to chemicals including chromium (hexavalent compounds), which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more details, visit www.P65Warnings.ca.gov.

Inquire About Freight Delivery & Pure Care™ Warranties

For questions regarding up to 7-year / 1-million-mile warranty options, core exchange procedures, or nationwide freight delivery when purchasing a Subaru EJ253 Remanufactured Engine, reach out directly through the Mechrontech contact portal.