Skip to product information
1 of 9

JDM 2015 - 2021 SUBARU WRX STI MOTOR EJ257 V10 AVCS TURBO BOXER ENGINE IMPORTED

JDM 2015 - 2021 SUBARU WRX STI MOTOR EJ257 V10 AVCS TURBO BOXER ENGINE IMPORTED

Regular price $5,199.00 USD
Regular price Sale price $5,199.00 USD
Sale SOLD OUT
Shipping calculated at checkout.

Low stock: 4 left

  • Please Inspect All Images Before Purchase
  • 35,000 - 40,000 miles
  • Confirm Vehicle Fitment Before Purchase
30 Days Warranty For Performance
90 Days Warranty For Non-Performance
Rotary Engines Are Sold As Is
 

JDM EJ257 Engine 2015–2021 Subaru WRX STI 2.5L Turbo AVCS V10 Boxer Motor

Looking for a high-performance OEM replacement engine for your STI? This JDM EJ257 2.5L Turbo Boxer Engine with AVCS (V10) is imported directly from Japan and designed for the Subaru WRX STI.

The EJ257 is Subaru’s legendary turbocharged flat-four platform, known for strong low-end torque, forged internals, and exceptional tuning capability. This JDM long block is ideal for blown engine replacement, performance builds, or full STI restoration projects.


✅ Engine Features

  • Engine Code: EJ257 V10

  • 2.5L Turbocharged DOHC Boxer (Horizontally Opposed 4-Cylinder)

  • AVCS (Active Valve Control System)

  • Intercooled Turbo Platform

  • Factory STI Performance Motor

  • JDM Imported Low-Mileage Unit

  • Compression Tested & Inspected


📦 What’s Included

  • EJ257 Long Block Assembly

  • Cylinder Head Assembly with AVCS

  • Turbocharger (if shown in photos)

  • Intake Manifold (if shown)

  • Factory Engine Components as Pictured

⚠️ ECU, engine wiring harness, accessories, and external bolt-ons may not be included unless specified.


🚗 Vehicle Compatibility

  • 2015 Subaru WRX STI

  • 2016 Subaru WRX STI

  • 2017 Subaru WRX STI

  • 2018 Subaru WRX STI

  • 2019 Subaru WRX STI

  • 2020 Subaru WRX STI

  • 2021 Subaru WRX STI

Buyers must verify compatibility using VIN before purchase. Professional installation is strongly recommended.


🔧 Why Choose the EJ257?

  • Proven high-horsepower capability

  • Strong aftermarket support

  • Ideal for stock replacement or built applications

  • Excellent platform for tuning and performance upgrades

The EJ257 remains one of the most respected turbo boxer engines in the performance community.


📦 Shipping Information

  • Freight shipping available nationwide

  • Engine secured on pallet for safe transport

  • Residential & commercial delivery options

  • Liftgate service available upon request

  • Local pickup available


⚠️ Important Installation Notes

  • Replace timing components, seals, gaskets, and fluids prior to install

  • Verify AVCS and ECU compatibility

  • Buyer responsible for emissions compliance

  • Professional installation required to maintain warranty eligibility

ADDITIONAL SERVICES:
Terms & Conditions:

SHIPPING: JDM West Coast offers specialized shipping with surcharges for services like liftgate delivery. They promise same-day shipping for orders before 1 PM PST, with next-day dispatch for later orders. Shipping is within the 48 contiguous states, with special arrangements for other US territories. Customers receive tracking numbers and are responsible for return shipping costs. Queries can be directed to their customer service. Shipping policy acceptance is required.

TERMS AND CONDITIONS: JDM West Coast's terms require users to comply with conditions when using their website and services. It includes accepting terms upon access, being of legal age, and the right to refuse service. Information may not always be accurate, and service and prices can change without notice. They offer online-exclusive products, reserve order refusal rights, and may use third-party tools and materials. Users' feedback may be used freely, and personal information is protected under their Privacy Policy.

View full details

    Contact us

    9716 Alburtis Ave, Santa Fe Springs, CA 90670

    (562) 222-1000

    sales@jdmwestcoast.com

    • LOW MILEAGE

      We hand-pick our JDM motors and transmissions with an average of 45,000-65,000 miles. Japan's strict emission laws make it costly to keep cars there, so many are sent to junkyards or auctioned off. We import them straight to our NJ warehouse.

    • AFFORDABLE PRICE

      We compare our prices to our competitors' to make sure you get the best value. We also consider any other costs when replacing an engine, like labor and parts, to make sure our prices are fair. Check out our products and see why ours are so cost-effective.

    • HUGE SELECTION

      Get your JDM motor with ease! Just make sure to research the vehicle carefully to ensure you get the right motor. When looking through our selection, take note of the year, make, model and displacement of your car. It's a match? Then we'll sell to you!

    JDM West Coast

    9716 Alburtis Ave,
    Santa Fe Springs, CA 90670

    (562) 222-1000
    SHOP HOURS

    Monday9AM - 5:30PM

    Tuesday9AM - 5:30PM

    Wednesday9AM - 5:30PM

    Thusday9AM - 5:30PM

    Friday9AM - 5:30PM

    Saturday9AM - 3PM

    SundayClosed