EJ257 Short Block Assy (STI MY08-21)-1
    EJ257 Short Block Assy (STI MY08-21)-1
EJ257 Short Block Assy (STI MY08-21)-1
Subaru

EJ257 Short Block Assy (STI MY08-21)

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$3,399.95
$3,399.95

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Engineered Power That Goes Further. Power Glide 8 GLV‑1 0W‑8 Performance Motor Oil

This is a genuine Subaru EJ257 2.5 litre shortblock. This shortblock is standard equipment on the 2006+ Australian STi. The 2.5 litre block makes a great upgrade for all WRX models, since there is no replacement for displacement. The Australian STi block features a semi-closed deck for increased strength. This motor is physically a bolt-in for all WRX and STi models (WRXs will require ECU tuning, bigger injectors, etc.).

NOTE:
1. THIS IS NOT A COMPLETE MOTOR: This is a fully assembled bottom end, which consists of a block, crank, rods and pistons only. You will need to reuse your stock cylinder heads or purchase replacements.
2. The OEM 2.0L WRX heads will bolt-on for to the 2.5L short block, but there will be a change in compression.
3. For high-powered applications, we recommend replacing the cast OEM pistons in this block with Mahle Forged OEM-size units.

Specs

Main Characteristics

No specifications added yet.
Technology

Advanced Engine Technology

Engineered for Extreme Protection

Delivers rapid oil circulation and reliable protection—even in extreme temperatures.

Friction Shield Tech

Forms a strong barrier that reduces heat, friction, and wear on critical engine parts.
Performance

Advanced Protection

5

L

Extended Volume
Enough for full oil changes with lasting performance between intervals.
0W

8

Ultra-Low Viscosity
Faster flow, better cold-start protection, and improved fuel economy.
GLV

1

Modern Engine Ready
Formulated to match the demands of advanced engine designs.
80

%

Friction Reduction
Engineered to lower internal friction and reduce overall engine wear.
-30°

C

Cold Start Ready
Flows instantly in subzero conditions to protect from the first turn.
+15

%

Fuel Efficiency Boost
Optimized formulation that helps engines run cleaner, more efficiently.
Features

Designed to Flow Clean, Protect Deep, and Power Your Engine at Every Turn

Delivers smooth flow, reduces wear, and keeps your engine running at peak performance.

Testimonials

Feedback from Our Customers

Reliable Even Under Pressure

I do a lot of highway driving and my engine runs cooler and quieter with this oil. No complaints, just great results.

Mike Johnson,

Long-Haul Driver

My Engine Feels Brand New

I switched to Power Glide 8 after reading about low-viscosity oils. It made a big difference—runs quieter, smoother, and cooler.

Kevin Howard,

Mechanic

Perfect for City Driving

Stop-and-go traffic used to make my engine heat up fast. Since switching to this oil, it stays stable and efficient. Big win.

James Craig,

Urban Driver

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