Subaru 2.5 Engine Price range: $1,100.00 through $6,500.00Select options
Subaru 2.5 Engine
The Subaru 2.5L naturally aspirated Boxer-4 engine is a reliable and efficient powertrain designed for smooth everyday driving. With approximately 182 horsepower and 176 lb-ft. of torque, its DOHC design with AVCS variable valve timing delivers a balanced combination of responsive performance, fuel efficiency, and practicality. It runs on regular unleaded gasoline and is commonly used in Subaru models such as the Outback, Forester, Crosstrek, and Legacy.
In Stock
$1,100.00 – $6,500.00Price range: $1,100.00 through $6,500.00
The prices are exclusive of taxes and shipping. The price may vary depending upon the miles and year of manufacturing.
SKU: SBR-25
Category: Used Engine
Tags: 2.5L boxer engine, OEM Subaru 2.5 engine, Replacement Subaru 2.5 engine, Subaru 2.5 boxer engine, Subaru 2.5 engine, Subaru 2.5 H4 engine, Subaru 2.5 turbo engine, Subaru 2.5L boxer engine, Subaru 2.5L engine, Subaru EJ25 engine, Subaru FB25 engine, Subaru flat 4 engine, Used Subaru 2.5 engine
Brand: Subaru
Additional Information
| Brand | Subaru |
|---|---|
| Conditions | Remanufactured, Used |
| Miles | 70000-130000 |
| Year Compatibility | 1996-2025 |
| Verified | Tried & Tested |
| Warranty | Up to 3 Months |
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Specifications
The Subaru 2.5 engine is a naturally aspirated, horizontally opposed 4-cylinder Boxer engine designed to deliver smooth performance, reliable power, and everyday efficiency. Producing up to 182 horsepower and 176 lb-ft of torque, the FB25 features DOHC cylinder heads, four valves per cylinder, Dual Active Valve Control System (AVCS), and a maintenance-free timing chain. Its aluminum construction with cast-iron cylinder liners helps provide a balance of strength and weight savings. With a 10.3:1 compression ratio and regular unleaded fuel compatibility, the FB25 is a practical replacement engine for select Subaru models and is well suited for dependable daily driving.Β Β Β
Engine Variants
EJ25 (Naturally Aspirated & Turbo)
The Subaru EJ25 is a 2.5-liter horizontally opposed 4-cylinder Boxer engine produced in both naturally aspirated and turbocharged versions. It has been used in several Subaru models, including the WRX, STI, Forester, Legacy, and Outback. Known for its strong aftermarket support and performance potential, the EJ25 has been a popular choice for both everyday driving and high-performance applications.
FB25 (Naturally Aspirated)
The Subaru FB25 is a 2.5-liter naturally aspirated Boxer 4-cylinder engine developed as a newer-generation alternative to the EJ25. It uses a timing chain, DOHC valvetrain, and variable valve timing to improve efficiency and everyday drivability. Depending on the model and year, the FB25 produces approximately 170β182 hp and has been widely used in vehicles such as the Forester, Outback, Legacy, and Crosstrek.
Frequently Asked Questions
Is the Subaru 2.5 engine a good engine?
The Subaru 2.5 engine is a good and a reliable engine but its reputation depends heavily on the specific generation and year.
Can I reuse my existing intake and exhaust system with a Subaru 2.5 Engine?
This depends on the specific engine variant and vehicle application. Intake manifolds, throttle bodies, exhaust manifolds, oxygen sensors, and related components can differ between Subaru models and generations. Comparing the mounting points and sensor configuration before installation can prevent compatibility issues.
What are some common problems with Subaru 2.5 engines?
Subaru’s 2.5-liter 4-cylinder boxer engines are famous for performance and design, but older and high-performance versions are known for several major mechanical issues
How many horsepower is a 2.5 Subaru motor?
A 2.5-liter Subaru motor produces anywhere from 170 to 305 horsepower, depending on whether it is naturally aspirated (standard) or turbocharged.
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